[go: up one dir, main page]

EP0891235B1 - Precision blanking press with knife-edged ring and counter cylinder - Google Patents

Precision blanking press with knife-edged ring and counter cylinder Download PDF

Info

Publication number
EP0891235B1
EP0891235B1 EP97907241A EP97907241A EP0891235B1 EP 0891235 B1 EP0891235 B1 EP 0891235B1 EP 97907241 A EP97907241 A EP 97907241A EP 97907241 A EP97907241 A EP 97907241A EP 0891235 B1 EP0891235 B1 EP 0891235B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
ram
working
piston
cylinders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97907241A
Other languages
German (de)
French (fr)
Other versions
EP0891235A1 (en
Inventor
Horst Baltschun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Feintool International Holding AG
Original Assignee
Feintool International Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Feintool International Holding AG filed Critical Feintool International Holding AG
Publication of EP0891235A1 publication Critical patent/EP0891235A1/en
Application granted granted Critical
Publication of EP0891235B1 publication Critical patent/EP0891235B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B1/00Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B30B1/34Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure involving a plurality of plungers acting on the platen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/02Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16Shoulder or burr prevention, e.g. fine-blanking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B1/00Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B1/00Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B30B1/323Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure using low pressure long stroke opening and closing means, and high pressure short stroke cylinder means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0029Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height
    • B30B15/0035Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height using an adjustable connection between the press drive means and the press slide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04Frames; Guides
    • B30B15/045Mountings of press columns
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/202With product handling means
    • Y10T83/2092Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096Means to move product out of contact with tool
    • Y10T83/2135Moving stripper timed with tool stroke
    • Y10T83/215Carried by moving tool element or its support
    • Y10T83/2153Fluid pressure actuated stripper
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/869Means to drive or to guide tool
    • Y10T83/8821With simple rectilinear reciprocating motion only
    • Y10T83/8858Fluid pressure actuated
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/929Tool or tool with support
    • Y10T83/9411Cutting couple type
    • Y10T83/9423Punching tool

Definitions

  • the invention relates to a hydraulically or mechanically driven Fineblanking press with ring serrated and counter holder cylinder according to the preamble of claim 1.
  • An essential feature of fineblanking is the embossing of a ring spike parallel to the cutting line on the lead frame side, to ensure that the material continues to flow to avoid; the ring spike is impressed through the ring-toothed cylinder.
  • the workpiece is in the fineblanking process through a special sheet metal counterholder - in called another "counterholder" - from below against the upper tool pressed.
  • the force of the Ring-toothed cylinder in the upper crosshead of the machine stand is arranged against the cutting force.
  • the Counterholder cylinder in the plunger or in the working piston is integrated, presses the workpiece against the upper part of the tool; the counterholder support force acts on the cutting force opposite.
  • the counter force of the ring-toothed cylinder is up to 50% and that of the counterpart up to 25% of the Worker.
  • the ring-toothed cylinder is above the upper crosshead integrated in a traverse and with the Tappet firmly connected so that it is in sync with the Ram moved up.
  • the counter holder cylinder is between Tappet and lower crosshead of the stand arranged.
  • the piston of the serrated cylinder is replaced by a pressure-actuated support cylinder in its lower position kept and thereby remains in constant contact with the push pin of the upper tool.
  • the pressure-actuated support cylinder pushes working strokes the ring-toothed piston in its lower basic position and at the same time strips off the ring-tooth punched grid.
  • the piston of the counter-holding cylinder is actuated by a pressure medium Support cylinder in its upper position kept, which keeps him in constant contact with the pressure bolts of the lower tool remains.
  • a pressure medium Support cylinder in its upper position kept, which keeps him in constant contact with the pressure bolts of the lower tool remains.
  • a fineblanking press is now available Available, whose energy losses are greatly reduced. This is particularly due to the arrangement of the ring spikes and Counterholder cylinder reached during the working stroke of the ram clamp the lead frame or the fine blank without executing a stroke. It arises during the Working strokes between ring-toothed cylinder and ram none Relative movement; the ring-toothed cylinder support forces are taken up by the pestle. The main drive operator is not reduced by the ring-toothed cylinder pressure. At the same time, between arises during the working stroke Counterholder cylinder and stand no relative movement; the Counterholder cylinder support forces are absorbed by the stand. The main drive is driven by the Counterholder cylinder contact pressure not reduced.
  • a solution is shown in which the columns 3 are firmly connected to the plunger 1 .
  • the columns 3 penetrate the stand 4 in the region of the upper crosshead and are firmly connected to the cross member 2 here.
  • a double-acting ring serrated cylinder C is integrated in the traverse 2 .
  • Below the plunger 1 the columns 3 are provided with a shoulder, which is designed as a piston 3.1 of the working cylinder A.
  • the working cylinder A consists of the cylinder housing 5, which is integrated in the stator 4 , and piston 3.1, they form the pressure-actuated cylinder chamber 5.1.
  • a cylinder piston unit B is arranged between the plunger 1 and the upper crosshead of the stand 4 ; the hydraulic effective area of the piston 7 is the same size as the piston area 3.1 .
  • the counter-holding cylinder D is integrated below the plunger 1 in the lower crosshead of the stand 4 .
  • the fineblanking press is shown here in the lower starting position.
  • the plunger 1 is moved upwards by the rapid stroke cylinder G.
  • the piston 7 displaces the pressure medium from the cylinder space 6.1 of the cylinder B , the pressure medium is shifted into the cylinder space 5.1 of the cylinder A via line 27.1, valve 26 and line 27 .
  • the piston 35 of the counter-holding cylinder D is connected to the plunger 1 by the piston 44 of the pressure medium-loaded cylinder F ; it remains in constant contact with the pressure pin 36 and moves upwards with the feed movement of the ram 1 .
  • the piston 44 is fixedly connected to the plunger 1 via connecting elements 46 . Due to the upward movement of the piston 33 , the pressure medium is shifted from the cylinder space 39 via line 37, valve 38 and line 37.1 into the cylinder space 34 .
  • the contact force of the ring-toothed cylinder C also takes effect immediately after the valve 16 has been switched over, since the cylinder chamber 12 remains connected to the pressure medium source 18 and the cylinder chamber 15 is connected to the tank 17 via the valve 16 .
  • the contact pressure is transferred via the pressure bolts 9 into the fineblanking tool for pressing in the ring-shaped contour.
  • the ring-toothed cylinder support force is passed from the housing 8 into the cross member 2 and from here via the columns 3 into the plunger 1 .
  • the work force of the main drive is not reduced by the ring serration pressure.
  • the piston 21 of the cylinder E is relieved of pressure at the beginning of the working stroke via the valve 22 switch position "1", the piston 13 can be displaced upwards.
  • the contact pressure of the counter-holding cylinder D also takes effect immediately after the valve 38 has been switched over, since the cylinder space 34 remains connected to the pressure medium source 40 and the cylinder space 39 is connected to the tank 41 via the valve 38 .
  • the contact pressure is transmitted via the pressure bolts 36 into the fineblanking tool for pressing on the workpiece.
  • the counter-holding cylinder support force is transmitted from the housing 30 into the stand 4 . During the working stroke, there is no relative movement between the counter-holding cylinder D and the workpiece in the tool.
  • the piston 44 of the cylinder F is relieved of pressure at the beginning of the working stroke via valve 43 switch position "1"; the piston 35 moves relative to the working stroke of the plunger 1 downwards.
  • the work force of the main drive is not reduced by the counter-pressure.
  • valves 26, 16, 38, 22 and 43 are switched from switch position "1" to switch position "0".
  • the cylinder space 6.1 of the cylinder B is connected to the pressure medium source 40 via the valve 26 and generates a counterforce to the pressure medium-actuated cylinder A , the work force is canceled.
  • the cylinder chamber 15 of the ring prong cylinder C is connected to the pressure medium source 18 via the valve 16 and generates a counterforce to the cylinder chamber 12, the ring prong force is released.
  • the support cylinder E is pressurized by switching valve 22 and pushes the piston 13 into its lower starting position; the lead frame is ejected via the pressure bolts 9 .
  • the cylinder chamber 39 of the counter-holder cylinder D is connected to the pressure medium source 40 via the valve 38 and generates a counterforce to the cylinder chamber 34; the counter-holding force is released.
  • the support cylinder F is pressurized by switching valve 43 and pushes the piston 35 into its upper starting position, in this case the fine stamped part is ejected via the pressure pin 36 .
  • the ram 1 is moved downwards into the basic position of the machine by the quick-stroke cylinder G , the fineblanking cycle is ended.
  • the fineblanking press with single-acting cylinder systems is shown here.
  • the arrangement of the ring-toothed cylinder C2 in the crossmember 2 and the counter-holding cylinder D2 between the plunger 1 and the stand 4 corresponds to FIG. 1.
  • the fineblanking press is shown in the starting position.
  • the ram 1 is moved upwards by the rapid stroke cylinder G.
  • pressure medium is sucked into the main, ring spike and counter-holding cylinders via the suction valves 2.28, 2.15 and 2.39 .
  • valves 2.16, 2.26, 2.38 are switched from switch position "0" to "1". Cylinder rooms 2.51, 2.12 and 2.33 are pressurized.
  • the working cylinder A2 generates the punching force and moves the ram upwards.
  • the piston 2.13 of the ring prong cylinder C2 presses the ring prong contour into the lead frame via the pressure bolts 9 .
  • the ring-toothed cylinder support force is passed from the housing 2.8 into the cross member 2 and from here via the columns 3 into the plunger 1 .
  • the work force of the main drive is not reduced by the ring spike pressure.
  • the cylinder space 2.33 of the counter-holding cylinder D2 is pressurized at the start of the working stroke.
  • the cylinder housing 2.30 which is connected to the pressure pin 2.36 and the plunger 1 via the support cylinder F , transmits the contact pressure to the workpiece via the pressure pin 2.36 .
  • the counterholder support force is transmitted into the stand 4 via the piston 2.31 . There is no relative movement between the counter-cylinder D2 and the workpiece during the working stroke. The counter cylinder support force does not reduce the work force of the master cylinder.
  • valves 2.16.2.22.2.39 and 2.43 are switched from switch position "1" to “0” and valve 2.26 from switch position "1" to “2".
  • the cylinders A2, C2 and D2 are depressurized, the support cylinders E and F are pressurized.
  • the support cylinder E pushes out the lead frame and the support cylinder F out the workpiece, as described in FIG. 1.
  • FIGS. 1 and 2 A fine blanking press in a similar design to that described in FIGS. 1 and 2 is shown.
  • the working cylinder A3 is arranged in the upper crosshead of the stand 4 .
  • the area of the piston 3.5.2 is approximately the same size as the four areas of the piston 7 .
  • the cylinder spaces 6.1 and 3.5.1 are pressurized.
  • the force of the cylinder A3 is the same as the forces of the four cylinders B3.
  • the ring- toothed cylinder C3 is integrated in the piston 3.5.2 of the working cylinder A3 .
  • the active surfaces 3.12 and 3.15 correspond to the surfaces 12 and 15 according to FIG. 1.
  • the course of the working cycle can be seen from the description according to FIG. 1.
  • the fineblanking press is provided with an installation space adjustment 3.6 , which is arranged below the ram 1 .
  • the columns 3 are provided with a thread 3.6.1 at the lower end.
  • the threaded nut 3.7 is rotatably fastened to the plunger 1 with fastening elements 3.7.1 .
  • the threaded nuts 3.7 are provided with teeth for chain or toothed belt drives.
  • the four nuts 3.7 are adjusted synchronously via a chain or a toothed belt. The adjustment can be made so that at different heights of the fineblanking tools, the stop surface 7.1 of the piston 7 hits the cylinder housing 6 at the end of the working stroke.
  • the example here shows a fineblanking press with simple acting cylinder systems.
  • the way it works and works is similar to that described in Fig. 2, the cylinder arrangement is similar to that shown in Fig. 3.
  • FIGS. 1 and 3 Shown is a fineblanking press, the mode of operation of which was described in FIGS. 1 and 3.
  • the four bias cylinders B and B3 (Fig. 1, 3) are replaced by a cylinder B5 .
  • the cylinder B5 is arranged between the stand 4 and a second crossbeam 5.2 .
  • An installation space adjustment 3.6 as described in FIG. 3, is arranged below the cross member 5.2 .
  • This version of the fineblanking press differs from the version according to FIG. 1 in that the four working cylinders A are replaced by a cylinder A6 with installation space adjustment.
  • the counter-holding cylinder D6 is integrated in the piston 6.6 of the working cylinder A6 .
  • the mode of operation is described in Fig. 2 for the main drive and in Fig. 1 for the ring prong and counter-holding cylinder.
  • the structure of the fineblanking press shown here is identical to that of FIG. 6, only the ring-serrated cylinder C6 is replaced by four cylinders C7, which are arranged in the upper region of the columns 3 .
  • the mode of operation of the ring-toothed cylinders is described in FIG. 1.
  • the working and serrated cylinders are arranged on the columns 3 of the fineblanking press; an installation space adjustment, as shown in Fig. 3, can alternatively be installed.
  • the ring-toothed cylinders C9 are designed as shown in FIG. 7, and the working cylinders A9 correspond to the version according to FIGS. 1 and 2. For the mode of operation, see again in FIG. 1.
  • a double-acting working cylinder A10 is arranged in the lower crosshead of the stand 4 .
  • the method of operation corresponds to that of FIG. 1.
  • a fineblanking press with a mechanical main drive is shown.
  • the main drive can, as shown, be designed as an eccentric or, as not shown, as a toggle lever drive.
  • the feed, working and return stroke of the ram 1 is carried out by the mechanical drive.
  • the mode of operation of the ring-point C11 and counter-holding cylinder D11 corresponds to the description according to FIG. 1.
  • An installation space adjustment, as shown in FIG. 4, allows the use of tools with different heights.
  • the work force of the mechanical main drive is not reduced by the ring serration and counter-pressure.
  • a single-acting working cylinder A12 is arranged in the upper crosshead of the stand 4 , the mode of operation being described in FIG. 2. Due to the arrangement of the working cylinder A12 in the upper crosshead, the working force is guided directly from the piston 12.4 via the columns 3 into the plunger 1 .
  • the stand 4 is not burdened by the worker and only needs to absorb the supporting forces of the counter-holder.
  • a guide 12.1 can also be attached to the plunger 1 .
  • the fineblanking press shown is under construction with the version 12 identical, only the working cylinder is double acting. For the mode of operation, see Fig. 1.
  • a working cylinder A14, a ring prong cylinder C14, a supporting cylinder E14 and an installation space adjustment with a fixed stop are integrated in a cylinder-piston unit.
  • the stand 4 is not used by the worker.
  • the feed and return stroke of the ram is additionally carried out by the counter-holding cylinder.
  • the piston rod diameters have been adjusted in such a way that the delivery stroke, the counter-holding pressure and the return stroke are carried out by differential switching.
  • With position "0" of valve 14.38 all connections are interrupted and the plunger is in the UT position. In position "1", the cylinder spaces 14.39 with 14.34 are connected to the pressure medium source.
  • the difference surface 14.40 pushes the piston including the plunger 1 and crossbar 2 upwards.
  • the valve 14.38 is switched to position "2"
  • the cylinder space 14.39 is relieved of pressure
  • the cylinder space 14.34 remains connected to the pressure medium source and thus generates the counterpressure pressure.
  • the return stroke is initiated by position "3", the cylinder space 14.34 being connected to the tank and the cylinder space 13.39 being connected to the pressure medium source. In UT it is switched to position "0".
  • the cross member 2 and the plunger 1 are connected on both sides to a plate 15.2 ; they form a plunger elongated upwards.
  • guide elements 15.6 and 15.8 are attached to the plunger 1 and stand 4 .
  • the upper crosshead 4.1 is fastened to the stand 4 with connecting elements, and the columns 3 from FIG. 14 are replaced by the plates 15.1 .
  • the stand 4 is not claimed by the force of the working cylinder A.
  • the double-acting working cylinders A16 in the upper crosshead 4.1 are arranged around the columns 3 and the ring-toothed cylinders C16 in the cross member 2 are also arranged around the columns 3 .
  • the conventional center support is no longer required.
  • the bores 16.10 for the ring-serrated pressure bolts 16.9 are not arranged around the middle, but are distributed in the upper crosshead 4.1.
  • the stand 4 is not claimed by the force of the working cylinder A16 .
  • the cross member 2 is designed as a cylinder housing.
  • Two working cylinders A17, a ring- toothed cylinder C17 and two stripping cylinders E17 are integrated in the traverse 2 .
  • the two double-acting working cylinders A17 are arranged laterally in the cross arm 2 .
  • the lower piston A17.2 forms together with the cylinder housing 2 (here designed as a traverse) the lower cylinder space A17.3.
  • the upper cylinder space A17.4 is formed by the cylinder housing 2 and the upper piston rod A17.5 .
  • the two lower piston rods A17.2 are firmly connected to the upper crosshead 4.1 via connecting elements A17.9 .
  • the two upper piston rods A17.5 are connected to a plate that is designed as a hydraulic distributor block A17.10 .
  • the double-acting ring tooth cylinder C17 is arranged in the middle between the working cylinders A17 .
  • the lower piston C17.1 forms together with the cylinder housing 2 the lower cylinder space C17.2.
  • the upper cylinder chamber C17.4 is formed by the cylinder housing 2 and the upper piston rod C17.5 .
  • a plate E17.4 on which the pressure bolts 9 are supported is attached to the ring- toothed cylinder piston C17.1 .
  • the scraper cylinders E17 are integrated in the piston A17.2 .
  • the two support cylinders E17 arranged on the side can hydraulically compensate for eccentric loads on the ring spike forces.
  • the ram plate 1 forms the press ram with the plates 3 ' and the cross member 2 .
  • the counter-holding cylinder D17 is arranged below the plunger plate 1 in the lower crosshead of the stand 4 .
  • the two side cylinders F17 can hydraulically compensate for eccentric loads on the counter-holding forces.
  • the discharge cylinders F17 are attached to the plunger plate 1 .
  • the stand 4 is not used by the work force of the working cylinders A17 .
  • a fineblanking press as described in FIG. 17, is shown, wherein the movable and fixed machine components have been reversed.
  • the ram plate 1 ' is firmly connected to the machine stand, and the function of the press ram is taken over by the movable ram 4.1' .
  • the ram plate 1 ', the crossbeam A19.1 and the plates 3' are firmly connected to one another, together they form the stand of the fineblanking press .
  • the plates 3 ' are extended downwards over the ram plates 1' and form the foot of the stand in the region 3.2 ' . With the traverse A19.1 , the housing of the two working cylinders A19 and the housing of the ring prong cylinder C19 are firmly connected to the stand.
  • the two lower piston rods A19.2 of the working cylinders A19 are fastened to the movable plunger 4.1 ' by connecting elements A19.9 .
  • the piston rod C19.1 of the serrated cylinder C19 is connected to the plunger 4.1 ' via the plate E19.4 by hydraulic coupling of the support cylinder E19 .
  • the cylinder housing D19.6 of the counter-holding cylinder D19 is firmly connected below the tappet plate 1 ' to the movably arranged crossbar D19.9 .
  • the ram 4.1 ' and the crossbar D19.9 are connected to each other by the plates 4' and connecting elements D19.8 . Instead of the plates 3 ', 4' , columns could also be used.
  • the delivery cylinders G19 are attached with their cylinder housings to the plates 3 ' with the piston rods on the plunger 4.1' .
  • the plunger G19 4.1 'and integral with this housing is moved D19.6 of the counter-holder cylinder D19 downward.
  • the pressure medium is shifted from the upper cylinder rooms to the lower cylinder rooms.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press Drives And Press Lines (AREA)
  • Shearing Machines (AREA)
  • Control Of Presses (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Executing Machine-Instructions (AREA)
  • Centrifugal Separators (AREA)

Abstract

The press slide of a hydraulically or mechanically driven precision blanking press is non-positively connected with a crosshead by means of columns. The knife-edged ring cylinder is integrated in the crosshead and the supporting force of the knife-edged ring cylinder is taken up by the slide. During a cutting stroke, there is no relative movement between the knife-edged ring cylinder with piston and the slide. The counter cylinder is located in the lower crosshead of the stand. During a cutting stroke, there is no relative movement between the counter cylinder and the workpiece in the tool. The working force of the main drive is not reduced by the pressing force of the knife-edged ring and counter cylinder.

Description

Anwendungsgebiet der ErfindungField of application of the invention

Die Erfindung betrifft eine hydraulisch oder mechanisch angetriebene Feinschneidpresse mit Ringzacken- und Gegenhalterzylinder gemäss dem Oberbegriff des Anspruchs 1.The invention relates to a hydraulically or mechanically driven Fineblanking press with ring serrated and counter holder cylinder according to the preamble of claim 1.

Beim Feinschneiden von Werkstücken können glatte einrissund abrissfreie Schnittflächen erzeugt und Bruchflächen, wie sie üblicherweise beim Normalschneiden vorkommen, vermieden werden. Ein wesentliches Merkmal des Feinschneidens ist das Einprägen einer Ringzacke parallel zur Schnittlinie auf der Stanzgitterseite, um hier ein Nachfliessen des Materials zu vermeiden; das Einprägen der Ringzacke erfolgt durch den Ringzackenzylinder. Das Werkstück wird beim Feinschneidprozess durch einen speziellen Blechgegenhalter - im weiteren "Gegenhalter" genannt - von unten gegen das Oberwerkzeug gepresst.When fine-cutting workpieces, smooth tears can occur tear-free cut surfaces and broken surfaces, as they usually occur with normal cutting, avoided become. An essential feature of fineblanking is the embossing of a ring spike parallel to the cutting line on the lead frame side, to ensure that the material continues to flow to avoid; the ring spike is impressed through the ring-toothed cylinder. The workpiece is in the fineblanking process through a special sheet metal counterholder - in called another "counterholder" - from below against the upper tool pressed.

Stand der TechnikState of the art

Bei herkömmlichen Feinschneidpressen wirkt die Kraft des Ringzackenzylinders, der im oberen Querhaupt des Maschinenständers angeordnet ist, der Schneidkraft entgegen. Der Gegenhalterzylinder, der im Stössel oder im Arbeitskolben integriert ist, drückt das Werkstück gegen das Werkzeugoberteil; die Gegenhalterabstützkraft wirkt der Schneidkraft entgegen. Die Gegenkraft des Ringzackenzylinders beträgt bis zu 50% und die des Gegenhalters bis zu 25% der Arbeitskraft. Diese Gegenkräfte werden beim Arbeitshub durch das Verdrängerprinzip in Wärme umgesetzt und mindern zusätzlich die Schnittleistung. Bei einer herkömmlichen Feinschneidpresse mit beispielsweise 100 kW Antriebsleistung wird eine Kühlleistung von ca. 80 kW installiert, die Schnittkraft von z.B. 4000 kN kann um 3000 kN gemindert werden.With conventional fineblanking presses, the force of the Ring-toothed cylinder in the upper crosshead of the machine stand is arranged against the cutting force. The Counterholder cylinder in the plunger or in the working piston is integrated, presses the workpiece against the upper part of the tool; the counterholder support force acts on the cutting force opposite. The counter force of the ring-toothed cylinder is up to 50% and that of the counterpart up to 25% of the Worker. These opposing forces become during the working stroke converted into heat and reduced by the displacement principle additionally the cutting performance. With a conventional one Fineblanking press with, for example, 100 kW drive power a cooling capacity of approx. 80 kW is installed, the cutting force of e.g. 4000 kN can be reduced by 3000 kN become.

Aufgabe der ErfindungObject of the invention

Angesichts der bisher bekannten Feinschneidpressen mit der ungünstigen Relation zwischen der gesamthaft aufgewendeten Energie und der tatsächlich nutzbaren Schnittleistung liegt der Erfindung das Problem zugrunde, an einer Feinschneidpresse die Energieverluste stark zu reduzieren. Hierbei muss während des Schneidvorganges der Feinschneidpresse, das Einpressen der Ringzacke und das Verspannen des Werkstückes gegen das Oberwerkzeug gewährleistet sein.In view of the previously known fineblanking presses with the unfavorable relation between the total expended Energy and the actually usable cutting performance the invention based on the problem on a fineblanking press greatly reduce energy losses. in this connection during the cutting process of the fineblanking press, pressing the ring spike and clamping the workpiece be guaranteed against the upper tool.

Wesen der ErfindungEssence of the invention

Erfindungsgemäss ist der Ringzackenzylinder oberhalb des oberen Querhaupts in einer Traverse integriert und mit dem Stössel fest verbunden, so dass er sich synchron mit dem Stössel nach oben bewegt. Der Gegenhalterzylinder ist zwischen Stössel und unterem Querhaupt des Ständers angeordnet. Der Kolben des Ringzackenzylinders wird durch einen druckmittelbetätigten Stützzylinder in seiner unteren Position gehalten und bleibt hierdurch im ständigen Kontakt mit den Druckbolzen des Oberwerkzeuges. Durch die Befestigung des Stützzylinderkolbens am Ständer und die Integration im Ringzackenzylinderkolben kann dieser bei Druckentlastung während des Arbeitshubs nach oben ausweichen. Am Ende des Arbeitshubes schiebt der druckmittelbetätigte Stützzylinder den Ringzackenkolben in seine untere Grundposition und streift gleichzeitig das Ringzackenstanzgitter ab.According to the ring-toothed cylinder is above the upper crosshead integrated in a traverse and with the Tappet firmly connected so that it is in sync with the Ram moved up. The counter holder cylinder is between Tappet and lower crosshead of the stand arranged. The piston of the serrated cylinder is replaced by a pressure-actuated support cylinder in its lower position kept and thereby remains in constant contact with the push pin of the upper tool. Through the attachment of the support cylinder piston on the stand and the integration in Ring-toothed piston can do this when the pressure is released dodge upwards during the working stroke. At the end of The pressure-actuated support cylinder pushes working strokes the ring-toothed piston in its lower basic position and at the same time strips off the ring-tooth punched grid.

Der Kolben des Gegenhalterzylinders wird durch einen druckmittelbetätigten Stützzylinder in seiner oberen Position gehalten, wodurch er im ständigen Kontakt mit den Druckbolzen des Unterwerkzeuges bleibt. Durch die Befestigung des Stützzylinderkolbens am Stössel und die Integration im Gegenhalterzylinderkolben kann dieser bei Druckentlastung während des Arbeitshubs nach unten ausweichen. Am Ende des Arbeitshubes schiebt der druckmittelbetätigte Stützzylinder den Gegenhalterkolben in seine obere Grundposition und stösst gleichzeitig das Feinschneidteil in den Werkzeugraum.The piston of the counter-holding cylinder is actuated by a pressure medium Support cylinder in its upper position kept, which keeps him in constant contact with the pressure bolts of the lower tool remains. By attaching the Support cylinder piston on the tappet and integration in the Counterholder cylinder piston can do this with pressure relief dodge down during the work stroke. At the end of The pressure-actuated support cylinder pushes working strokes the counter-holding piston in its upper basic position and simultaneously pushes the fine blanking part into the tool room.

Durch die vorgenannte Anordnung kann die Arbeitskraft des Hauptantriebs voll zum Ausschneiden des Feinschneidteils genutzt werden. Somit steht jetzt eine Feinschneidpresse zur Verfügung, deren Energieverluste stark reduziert sind. Dies wird insbesondere durch die Anordnung des Ringzacken- und Gegenhalterzylinders erreicht, die während des Arbeitshubes des Stössels das Stanzgitter bzw. das Feinschneidteil einspannen ohne einen Hub auszuführen. Es entsteht während des Arbeitshubes zwischen Ringzackenzylinder und Stössel keine Relativbewegung; die Ringzackenzylinder-Abstützkräfte werden vom Stössel aufgenommen. Die Arbeitskraft des Hauptantriebes wird durch die Ringzackenzylinder-Anpresskraft nicht gemindert. Zugleich entsteht während des Arbeitshubes zwischen Gegenhalterzylinder und Ständer keine Relativbewegung; die Gegenhalterzylinder-Abstützkräfte werden vom Ständer aufgenommen. Die Arbeitskraft des Hauptantriebes wird durch die Gegenhalterzylinder-Anpresskraft nicht gemindert.Due to the above arrangement, the worker of the Main drive fully used for cutting out the fine blank become. A fineblanking press is now available Available, whose energy losses are greatly reduced. This is particularly due to the arrangement of the ring spikes and Counterholder cylinder reached during the working stroke of the ram clamp the lead frame or the fine blank without executing a stroke. It arises during the Working strokes between ring-toothed cylinder and ram none Relative movement; the ring-toothed cylinder support forces are taken up by the pestle. The main drive operator is not reduced by the ring-toothed cylinder pressure. At the same time, between arises during the working stroke Counterholder cylinder and stand no relative movement; the Counterholder cylinder support forces are absorbed by the stand. The main drive is driven by the Counterholder cylinder contact pressure not reduced.

Kurzbeschreibung der beigefügten ZeichnungenBrief description of the attached drawings

Es zeigen:

Fig. 1
eine Schnittdarstellung der Feinschneidpresse mit vorgespannten, doppelt wirkenden Ringzacken-, Gegenhalter- und Arbeitszylindern mit den erforderlichen Steuerungseinrichtungen, der Ringzackenzylinder ist über Säulen fest mit dem Stössel gekoppelt, in diesem Ausführungsbeispiel sind Mittenabstützungen am Ringzacken und Gegenhalter vorgesehen;
Fig. 2
eine Ausführungsform gemäss Fig. 1, jedoch mit einfachwirkenden Zylindersystemen, die Ringzacken und Gegenhalter sind ohne Mittenabstützung ausgeführt;
Fig. 3
eine Ausführungsform gemäss Fig. 1 und 2, jedoch mit Einbauraumverstellung, der Arbeitszylinder ist im oberen Querhaupt des Ständers angeordnet, der Ringzackenzylinder ist im Kolben des Arbeitszylinders integriert;
Fig. 4
eine Ausführungsform gemäss Fig. 3, jedoch mit einfachwirkendem Zylinder;
Fig. 5
eine Ausführungsform gemäss Fig. 3, als vorgespannte Feinschneidpresse mit doppeltwirkenden Arbeits-, Ringzacken- und Gegenhalterzylindern;
Fig. 6
eine Feinschneidpresse mit einem im unteren Querhaupt des Ständers angeordneten Arbeitszylinder und einem über Säulen gekoppelten Ringzackenzylinder, der Gegenhalterzylinder ist im Kolben des Arbeitszylinders integriert, zusätzlich ist eine Einbauraumverstellung mit Festanschlag vorhanden;
Fig. 7
eine Ausführungsform gemäss Fig. 6, die Ringzackenzylinder sind an den Säulen in der Traverse integriert;
Fig. 8
eine Ausführungsform gemäss Fig. 7, die Ringzackenzylinder sind an den Säulen im Stössel integriert;
Fig. 9
eine Ausführungsform gemäss Fig. 1 und 7, die Ringzackenzylinder sind an den Säulen in der Traverse, die Arbeitszylinder an den Säulen im Ständer integriert;
Fig. 10
eine Ausführungsform gemäss Fig. 9, die Ringzackenzylinder sind an den Säulen in der Traverse, die doppeltwirkenden Arbeitszylinder an den Säulen im Ständer integriert;
Fig. 11
eine Ausführungsform gemäss Fig. 1, der Zustell- und Arbeitshub wird durch einen mechanischen Kniehebel- oder Exzenterantrieb erzeugt;
Fig. 12
eine Ausführungsform gemäss Fig. 1, 2 und 3, die Anordnung der einfach wirkenden Arbeitszylinder erfolgt im oberen Querhaupt des Ständers, in dieser Ausführung ist eine Einbauraumverstellung unterhalb des Stössels angeordnet;
Fig. 13
eine Ausführungsform gemäss Fig. 12, aber mit doppeltwirkendem vorgespanntem Arbeitszylinder;
Fig. 14
eine Ausführungsform gemäss Fig. 3, aber mit Mittenabstützung der Ringzacken- und Gegenhalterpartie, sowie einer Einbauraumverstellung mit Festanschlag, der Arbeits- und Ringzackenzylinder ist in der Traverse angeordnet, der druckmittelbetätigte Stützzylinder ist zwischen den Arbeits- und Ringzackenzylinderkolben integriert, der Zustell- und Rückhub wird durch den Gegenhalterzylinder ausgeführt, die Kolbenstangendurchmesser wurden so abgestimmt, das durch Differenzschaltung der Zustellhub, der Gegenhalteranpressdruck und der Rückhub ausgeführt werden, das obere Querhaupt ist mit Verbindungselementen am Ständer befestigt;
Fig. 15
eine Ausführungsform gemäss Fig. 14, die Traverse und der Stössel werden beidseitig mit je einer Platte verbunden, sie bilden einen nach oben verlängerten Stössel, zusätzlich sind Führungselemente am Stössel und Ständer angebracht, das obere Querhaupt wird mit Verbindungselementen am Ständer befestigt;
Fig. 16
eine Ausführungsform gemäss Fig. 10 und 13, die doppeltwirkenden Arbeitszylinder sind im oberen Querhaupt um die Säulen, die Ringzackenzylinder in der Traverse um die Säulen angeordnet, die Bohrungen für die Ringzacken-Druckbolzen werden nicht um die Mittenabstützung angeordnet, sondern verteilen sich im oberen Querhaupt, das obere Querhaupt ist mit Verbindungselementen am Ständer befestigt;
Fig. 17
zeigt eine Schnittdarstellung einer Feinschneidpresse mit hydraulisch vorgespannten, doppeltwirkenden Arbeits-, Ringzacken- und Gegenhalterzylindern; in der oberen Traverse sind zwei Arbeitszylinder, ein Ringzackenzylinder und zwei Abstreifzylinder angeordnet; die Traverse und die Stösselplatte werden seitlich mit je einer Platte verbunden und bilden gemeinsam einen nach oben verlängerten Stössel;
Fig. 18
eine Ausführungsform gemäss Fig. 17, aber mit einfachwirkenden Zylindern; und
Fig. 19
eine Ausführungsform gemäss Fig. 17, aber mit einer Umkehr der beweglichen und festen Maschinenkomponenten.
Show it:
Fig. 1
a sectional view of the fineblanking press with pretensioned, double-acting ring prongs, counterholders and working cylinders with the necessary control devices, the ring prong cylinder is firmly coupled to the ram via columns, in this exemplary embodiment center supports on the ring prongs and counterholders are provided;
Fig. 2
an embodiment of Figure 1, but with single-acting cylinder systems, the ring spikes and counterhold are designed without center support.
Fig. 3
an embodiment according to Figures 1 and 2, but with installation space adjustment, the working cylinder is arranged in the upper crosshead of the stand, the ring prong cylinder is integrated in the piston of the working cylinder;
Fig. 4
an embodiment of FIG 3, but with a single-acting cylinder.
Fig. 5
an embodiment according to FIG 3, as a pre-tensioned fineblanking press with double-acting working, ring-serrated and counter-holding cylinders;
Fig. 6
a fineblanking press with a working cylinder arranged in the lower crosshead of the stand and a ring-toothed cylinder coupled via columns, the counter-holding cylinder is integrated in the piston of the working cylinder, an additional installation space adjustment with a fixed stop is available;
Fig. 7
an embodiment according to FIG. 6, the ring-toothed cylinders are integrated on the columns in the cross member;
Fig. 8
an embodiment according to FIG 7, the ring-toothed cylinders are integrated on the columns in the ram;
Fig. 9
an embodiment according to Figures 1 and 7, the ring prongs are integrated on the columns in the crossmember, the working cylinders on the columns in the stand;
Fig. 10
an embodiment according to FIG. 9, the ring-toothed cylinders are integrated on the columns in the crossmember, the double-acting working cylinders on the columns in the stand;
Fig. 11
1, the delivery and working stroke is generated by a mechanical toggle lever or eccentric drive;
Fig. 12
an embodiment according to Figures 1, 2 and 3, the arrangement of the single-acting working cylinder takes place in the upper crosshead of the stand, in this embodiment an installation space adjustment is arranged below the plunger;
Fig. 13
an embodiment according to FIG 12, but with double-acting preloaded working cylinder.
Fig. 14
3, but with center support of the ring prong and counter-holder section, as well as an installation space adjustment with a fixed stop, the working and ring prong cylinder is arranged in the crossbar, the pressure-actuated support cylinder is integrated between the working and ring prong piston, the infeed and return stroke is carried out by the counter-holder cylinder, the piston rod diameters have been adjusted so that the delivery stroke, the counter-holder contact pressure and the return stroke are carried out by differential switching, the upper crosshead is fastened to the stand with connecting elements;
Fig. 15
An embodiment according to FIG. 14, the cross member and the plunger are connected on both sides with a plate, they form an upwardly extended plunger, guide elements are additionally attached to the plunger and stand, the upper crosshead is fastened to the stand with connecting elements;
Fig. 16
An embodiment according to FIGS. 10 and 13, the double-acting working cylinders are arranged in the upper crosshead around the pillars, the ring-serrated cylinders in the traverse around the columns, the holes for the ring-serrated pressure bolts are not arranged around the center support, but are distributed in the upper crosshead , the upper crosshead is attached to the stand with fasteners;
Fig. 17
shows a sectional view of a fineblanking press with hydraulically preloaded, double-acting working, ring-serrated and counter-holding cylinders; two working cylinders, a ring-serrated cylinder and two stripping cylinders are arranged in the upper traverse; the crossbeam and the ram plate are laterally connected to one plate and together form a ram elongated upwards;
Fig. 18
an embodiment according to FIG 17, but with single-acting cylinders. and
Fig. 19
17, but with a reversal of the movable and fixed machine components.

Ausführungsbeispieleembodiments

Nachstehend wird die Erfindung anhand der beigefügten Zeichnungen detailliert erläutert.The invention will now be described with reference to the accompanying Drawings explained in detail.

Figur 1Figure 1

Gezeigt ist eine Lösung, bei der die Säulen 3 fest mit dem Stössel 1 verbunden sind. Die Säulen 3 durchdringen den Ständer 4 im Bereich des oberen Querhauptes und sind hier fest mit der Traverse 2 verbunden. In der Traverse 2 ist ein doppeltwirkender Ringzackenzylinder C integriert. Unterhalb des Stössels 1 sind die Säulen 3 mit einem Absatz, der als Kolben 3.1 des Arbeitszylinders A ausgebildet ist, versehen. Der Arbeitszylinder A besteht aus dem Zylindergehäuse 5, das im Ständer 4 integriert ist, und Kolben 3.1, sie bilden den druckmittelbetätigten Zylinderraum 5.1. Zwischen Stössel 1 und oberem Querhaupt des Ständers 4 ist eine Zylinderkolbeneinheit B angeordnet; die hydraulische Wirkfläche des Kolbens 7 ist gleich gross, wie die Kolbenfläche 3.1. Der Gegenhalterzylinder D ist unterhalb des Stössels 1 im unteren Querhaupt des Ständers 4 integriert.A solution is shown in which the columns 3 are firmly connected to the plunger 1 . The columns 3 penetrate the stand 4 in the region of the upper crosshead and are firmly connected to the cross member 2 here. A double-acting ring serrated cylinder C is integrated in the traverse 2 . Below the plunger 1 , the columns 3 are provided with a shoulder, which is designed as a piston 3.1 of the working cylinder A. The working cylinder A consists of the cylinder housing 5, which is integrated in the stator 4 , and piston 3.1, they form the pressure-actuated cylinder chamber 5.1. A cylinder piston unit B is arranged between the plunger 1 and the upper crosshead of the stand 4 ; the hydraulic effective area of the piston 7 is the same size as the piston area 3.1 . The counter-holding cylinder D is integrated below the plunger 1 in the lower crosshead of the stand 4 .

Die Feinschneidpresse ist hier in der unteren Ausgangsposition dargestellt. Der Stössel 1 wird durch den Schnellhubzylinder G nach oben gefahren. Während des Zustellhubs verdrängt der Kolben 7 das Druckmittel aus dem Zylinderraum 6.1 des Zylinders B, das Druckmittel wird über Leitung 27.1, Ventil 26 und Leitung 27 in den Zylinderraum 5.1 des Zylinders A umgeschichtet.The fineblanking press is shown here in the lower starting position. The plunger 1 is moved upwards by the rapid stroke cylinder G. During the delivery stroke, the piston 7 displaces the pressure medium from the cylinder space 6.1 of the cylinder B , the pressure medium is shifted into the cylinder space 5.1 of the cylinder A via line 27.1, valve 26 and line 27 .

Beim Zustellhub des Stössels 1 wird die Traverse 2 und das in ihr integrierte Zylindergehäuse 8 des Ringzacksnzylinders C synchron nach oben gefahren. Der Kolben 13 des Ringzackenzylinders C bleibt im ständigen Kontakt mit dem Druckbolzen 9, er wird durch den Kolben 21 des druckmittelbeaufschlagten Zylinders E in dieser unteren Position gehalten. Der Kolben 21 ist durch Verbindungselemente 23 mit dem Ständer 4 verbunden. Durch die Aufwärtsbewegung des Zylindergehäuses 8 muss das Druckmittel aus Zylinderraum 15 über Leitung 14.1, Ventil 16 und Leitung 14 in Zylinderraum 12 umgeschichtet werden. During the feed stroke of the plunger 1 , the cross member 2 and the cylinder housing 8 of the ring-toothed cylinder C integrated therein are moved synchronously upwards. The piston 13 of the serrated cylinder C remains in constant contact with the pressure pin 9 , it is held in this lower position by the piston 21 of the cylinder E under pressure. The piston 21 is connected to the stand 4 by connecting elements 23 . Be redirected by the upward movement of the cylinder housing 8 has the pressure medium from the cylinder chamber 15 via line 14.1, valve 16 and line 14 into cylinder space 12th

Der Kolben 35 des Gegenhalterzylinders D, dessen Gehäuse 30 am Ständer 4 befestigt ist, wird durch den Kolben 44 des druckmittelbeaufschlagten Zylinders F mit dem Stössel 1 verbunden; er bleibt in ständigem Kontakt mit den Druck-bolzen 36 und bewegt sich mit der Zustellbewegung des Stössels 1 nach oben. Der Kolben 44 ist über Verbindungselemente 46 fest mit dem Stössel 1 verbunden. Durch die Aufwärtsbewegung des Kolbens 33 wird das Druckmittel aus Zylinderraum 39 über Leitung 37, Ventil 38 und Leitung 37.1 in Zylinderraum 34 umgeschichtet.The piston 35 of the counter-holding cylinder D , the housing 30 of which is fastened to the stand 4 , is connected to the plunger 1 by the piston 44 of the pressure medium-loaded cylinder F ; it remains in constant contact with the pressure pin 36 and moves upwards with the feed movement of the ram 1 . The piston 44 is fixedly connected to the plunger 1 via connecting elements 46 . Due to the upward movement of the piston 33 , the pressure medium is shifted from the cylinder space 39 via line 37, valve 38 and line 37.1 into the cylinder space 34 .

Bei der Umschaltung vom Zustellhub zum Arbeitshub werden die Ventile 26,16,38,22 und 43 von Schaltstellung "0" in Schaltstellung "1" umgeschaltet. Hierbei wird die Arbeitskraft des Zylinders A, der mit der Druckmittelquelle 40 verbunden bleibt, sofort wirksam, da der Zylinderraum 6.1 des Zylinders B über das Ventil 26 mit dem Tank verbunden wird.When switching from the delivery stroke to the working stroke, the valves 26, 16, 38, 22 and 43 are switched from switch position "0" to switch position "1". In this case, the working force of the cylinder A , which remains connected to the pressure medium source 40 , takes effect immediately, since the cylinder space 6.1 of the cylinder B is connected to the tank via the valve 26 .

Die Anpresskraft des Ringzackenzylinders C wird nach Umschaltung des Ventils 16 auch sofort wirksam, da der Zylinderraum 12 mit der Druckmittelquelle 18 verbunden bleibt und der Zylinderraum 15 über das Ventil 16 mit dem Tank 17 verbunden wird. Die Anpresskraft wird über die Druckbolzen 9 ins Feinschneidwerkzeug zum Einpressen der Ringzackenkontur übertragen. Die Ringzackenzylinder-Abstützkraft wird vom Gehäuse 8 in die Traverse 2 und von hier über die Säulen 3 in den Stössel 1 geleitet. Während des Arbeitshubes findet zwischen Ringzackenzylinder C mit Kolben 13 und Stössel 1 keine Relativbewegung statt. Die Arbeitskraft des Hauptantriebs wird durch die Ringzacken-Anpresskraft nicht gemindert.The contact force of the ring-toothed cylinder C also takes effect immediately after the valve 16 has been switched over, since the cylinder chamber 12 remains connected to the pressure medium source 18 and the cylinder chamber 15 is connected to the tank 17 via the valve 16 . The contact pressure is transferred via the pressure bolts 9 into the fineblanking tool for pressing in the ring-shaped contour. The ring-toothed cylinder support force is passed from the housing 8 into the cross member 2 and from here via the columns 3 into the plunger 1 . During the working stroke, there is no relative movement between ring-toothed cylinder C with piston 13 and plunger 1 . The work force of the main drive is not reduced by the ring serration pressure.

Der Kolben 21 des Zylinders E wird mit Beginn des Arbeitshubs über das Ventil 22 Schaltstellung "1" druckentlastet, der Kolben 13 kann nach oben verdrängt werden.The piston 21 of the cylinder E is relieved of pressure at the beginning of the working stroke via the valve 22 switch position "1", the piston 13 can be displaced upwards.

Die Anpresskraft des Gegenhalterzylinders D wird nach Umschaltung des Ventils 38 auch sofort wirksam, da der Zylinderraum 34 mit der Druckmittelquelle 40 verbunden bleibt und der Zylinderraum 39 über das Ventil 38 mit dem Tank 41 verbunden wird. Die Anpresskraft wird über die Druckbolzen 36 ins Feinschneidwerkzeug zum Anpressen des Werkstückes übertragen. Die Gegenhalterzylinder-Abstützkraft wird vom Gehäuse 30 in den Ständer 4 übertragen. Während des Arbeitshubes findet zwischen Gegenhalterzylinder D und dem Werkstück im Werkzeug keine Relativbewegung statt.The contact pressure of the counter-holding cylinder D also takes effect immediately after the valve 38 has been switched over, since the cylinder space 34 remains connected to the pressure medium source 40 and the cylinder space 39 is connected to the tank 41 via the valve 38 . The contact pressure is transmitted via the pressure bolts 36 into the fineblanking tool for pressing on the workpiece. The counter-holding cylinder support force is transmitted from the housing 30 into the stand 4 . During the working stroke, there is no relative movement between the counter-holding cylinder D and the workpiece in the tool.

Der Kolben 44 des Zylinders F wird mit Beginn des Arbeitshubs über Ventil 43 Schaltstellung "1" druckentlastet; der Kolben 35 bewegt sich relativ zum Arbeitshub des Stössels 1 nach unten. Die Arbeitskraft des Hauptantriebs wird durch die Gegenhalteranpresskraft nicht gemindert.The piston 44 of the cylinder F is relieved of pressure at the beginning of the working stroke via valve 43 switch position "1"; the piston 35 moves relative to the working stroke of the plunger 1 downwards. The work force of the main drive is not reduced by the counter-pressure.

Beim Ende des Arbeitshubes werden die Ventile 26,16,38,22 und 43 von Schaltstellung "1" in Schaltstellung "0" umgeschaltet.At the end of the working stroke, the valves 26, 16, 38, 22 and 43 are switched from switch position "1" to switch position "0".

Der Zylinderraum 6.1 des Zylinders B wird über das Ventil 26 mit der Druckmittelquelle 40 verbunden und erzeugt eine Gegenkraft zum druckmittelbetätigten Zylinder A, die Arbeitskraft wird aufgehoben.The cylinder space 6.1 of the cylinder B is connected to the pressure medium source 40 via the valve 26 and generates a counterforce to the pressure medium-actuated cylinder A , the work force is canceled.

Der Zylinderraum 15 des Ringzackenzylinders C wird über das Ventil 16 mit der Druckmittelquelle 18 verbunden und erzeugt eine Gegenkraft zum Zylinderraum 12, die Ringzackenkraft wird aufgehoben. Der Stützzylinder E wird durch Umschaltung von Ventil 22 druckbeaufschlagt und schiebt den Kolben 13 in seine untere Ausgangsposition; hierbei wird über die Druckbolzen 9 das Stanzgitter ausgestossen.The cylinder chamber 15 of the ring prong cylinder C is connected to the pressure medium source 18 via the valve 16 and generates a counterforce to the cylinder chamber 12, the ring prong force is released. The support cylinder E is pressurized by switching valve 22 and pushes the piston 13 into its lower starting position; the lead frame is ejected via the pressure bolts 9 .

Der Zylinderraum 39 des Gegenhalterzylinders D wird über das Ventil 38 mit der Druckmittelquelle 40 verbunden und erzeugt eine Gegenkraft zum Zylinderraum 34; die Gegenhalterkraft wird aufgehoben. Der Stützzylinder F wird durch Umschaltung von Ventil 43 druckbeaufschlagt und schiebt den Kolben 35 in seine obere Ausgangsposition, hierbei wird über die Druckbolzen 36 das Feinstanzteil ausgestossen. Der Stössel 1 wird durch den Schnellhubzylinder G nach unten in die Grundstellung der Maschine gefahren, der Feinschneidzyklus ist beendet.The cylinder chamber 39 of the counter-holder cylinder D is connected to the pressure medium source 40 via the valve 38 and generates a counterforce to the cylinder chamber 34; the counter-holding force is released. The support cylinder F is pressurized by switching valve 43 and pushes the piston 35 into its upper starting position, in this case the fine stamped part is ejected via the pressure pin 36 . The ram 1 is moved downwards into the basic position of the machine by the quick-stroke cylinder G , the fineblanking cycle is ended.

Figur 2Figure 2

Hier ist die Feinschneidpresse mit einfachwirkenden Zylindersystemen dargestellt. Die Anordnung des Ringzackenzylinders C2 in der Traverse 2 und des Gegenhalterzylinders D2 zwischen Stössel 1 und Ständer 4 entspricht Fig. 1. Die Feinschneidpresse ist in der Ausgangsposition dargestellt. Mit Beginn des Feinschneidzykluses wird der Stössel 1 durch den Schnellhubzylinder G nach oben gefahren. Während des Zustellhubs wird Druckmittel über die Nachsaugventile 2.28, 2.15 und 2.39 in die Haupt-, Ringzacken- und Gegenhalterzylinder nachgesaugt. Mit Beginn des Arbeitshubs werden die Ventile 2.16, 2.26, 2.38 von Schaltstellung "0" in "1" umgeschaltet. Die Zylinderräume 2.51, 2.12 und 2.33 werden druckbeaufschlagt. Der Arbeitszylinder A2 erzeugt die Stanzkraft und fährt den Stössel nach oben. Gleichzeitig drückt der Kolben 2.13 des Ringzackenzylinders C2 über die Druckbolzen 9 die Ringzackenkontur in das Stanzgitter. Die Ringzackenzylinder-Abstützkraft wird vom Gehäuse 2.8 in die Traverse 2 und von hier über die Säulen 3 in den Stössel 1 geleitet. Während des Arbeitshubes findet zwischen Ringzackenzylinder C mit Kolben 2.13 und Stössel 1 keine Relativbewegung statt. Die Arbeitskraft des Hauptantriebs wird durch die Ringzackenanpresskraft nicht gemindert.The fineblanking press with single-acting cylinder systems is shown here. The arrangement of the ring-toothed cylinder C2 in the crossmember 2 and the counter-holding cylinder D2 between the plunger 1 and the stand 4 corresponds to FIG. 1. The fineblanking press is shown in the starting position. At the start of the fineblanking cycle, the ram 1 is moved upwards by the rapid stroke cylinder G. During the delivery stroke, pressure medium is sucked into the main, ring spike and counter-holding cylinders via the suction valves 2.28, 2.15 and 2.39 . At the start of the working stroke, valves 2.16, 2.26, 2.38 are switched from switch position "0" to "1". Cylinder rooms 2.51, 2.12 and 2.33 are pressurized. The working cylinder A2 generates the punching force and moves the ram upwards. At the same time, the piston 2.13 of the ring prong cylinder C2 presses the ring prong contour into the lead frame via the pressure bolts 9 . The ring-toothed cylinder support force is passed from the housing 2.8 into the cross member 2 and from here via the columns 3 into the plunger 1 . During the working stroke, there is no relative movement between ring-toothed cylinder C with piston 2.13 and plunger 1 . The work force of the main drive is not reduced by the ring spike pressure.

Der Zylinderraum 2.33 des Gegenhalterzylinders D2 wird mit Beginn des Arbeitshubes druckbeaufschlagt. Das Zylindergehäuse 2.30, das über den Abstützzylinder F mit dem Druckbolzen 2.36 und dem Stössel 1 verbunden ist, überträgt über die Druckbolzen 2.36 die Anpresskraft auf das Werkstück. Die Gegenhalterabstützkraft wird über den Kolben 2.31 in den Ständer 4 übertragen. Während des Arbeitshubs findet zwischen Gegenhalterzylinder D2 und Werkstück keine Relativbewegung statt. Die Arbeitskraft des Hauptzylinders wird durch die Gegenhalterabstützkraft nicht gemindert.The cylinder space 2.33 of the counter-holding cylinder D2 is pressurized at the start of the working stroke. The cylinder housing 2.30, which is connected to the pressure pin 2.36 and the plunger 1 via the support cylinder F , transmits the contact pressure to the workpiece via the pressure pin 2.36 . The counterholder support force is transmitted into the stand 4 via the piston 2.31 . There is no relative movement between the counter-cylinder D2 and the workpiece during the working stroke. The counter cylinder support force does not reduce the work force of the master cylinder.

Am Ende des Arbeitshubs werden die Ventile 2.16,2.22,2.39 und 2.43 von Schaltstellung "1" in "0" und das Ventil 2.26 von Schaltstellung "1" in "2" umgeschaltet. Die Zylinder A2,C2 und D2 werden drucklos, die Stützzylinder E und F druckbeaufschlagt. Der Stützzylinder E schiebt das Stanzgitter und der Stützzylinder F das Werkstück, wie in Fig. 1 beschrieben, heraus.At the end of the working stroke, valves 2.16.2.22.2.39 and 2.43 are switched from switch position "1" to "0" and valve 2.26 from switch position "1" to "2". The cylinders A2, C2 and D2 are depressurized, the support cylinders E and F are pressurized. The support cylinder E pushes out the lead frame and the support cylinder F out the workpiece, as described in FIG. 1.

Figur 3Figure 3

Es ist eine Feinschneidpresse in ähnlicher Ausführung, wie in Fig. 1 und 2 beschrieben, dargestellt. Der Arbeitszylinder A3 ist im oberen Querhaupt des Ständers 4 angeordnet. Die Fläche des Kolbens 3.5.2 ist ungefähr gleich gross wie die vier Flächen des Kolbens 7. In der Ausgangsposition und während der Zustell- und Rückhubbewegung sind die Zylinderräume 6.1 und 3.5.1 druckbeaufschlagt. Die Kraft des Zylinders A3 ist gleich gross wie die Kräfte der vier Zylinder B3. A fine blanking press in a similar design to that described in FIGS. 1 and 2 is shown. The working cylinder A3 is arranged in the upper crosshead of the stand 4 . The area of the piston 3.5.2 is approximately the same size as the four areas of the piston 7 . In the starting position and during the feed and return stroke movement, the cylinder spaces 6.1 and 3.5.1 are pressurized. The force of the cylinder A3 is the same as the forces of the four cylinders B3.

Der Ringzackenzylinder C3 ist im Kolben 3.5.2 des Arbeitszylinders A3 integriert. Die Wirkflächen 3.12 und 3.15 entsprechen den Flächen 12 und 15 nach Fig. 1. Der Ablauf des Arbeitszykluses kann aus der Beschreibung nach Fig. 1 entnommen werden. Die Feinschneidpresse ist mit einer Einbauraumverstellung 3.6 versehen, die unterhalb des Stössels 1 angeordnet ist. Die Säulen 3 sind am unteren Ende mit einem Gewinde 3.6.1 versehen. Die Gewindemutter 3.7 wird mit Befestigungselementen 3.7.1 am Stössel 1 drehbar befestigt. Die Gewindemuttern 3.7 sind mit Verzahnungen für Kettenoder Zahnriementrieb versehen. Über eine Kette oder einen Zahnriemen werden die vier Muttern 3.7 synchron verstellt. Die Verstellung kann so vorgenommen werden, dass bei verschieden hohen Feinschneidwerkzeugen am Ende des Arbeitshubs die Anschlagfläche 7.1 des Kolbens 7 auf das Zylindergehäuse 6 trifft. The ring- toothed cylinder C3 is integrated in the piston 3.5.2 of the working cylinder A3 . The active surfaces 3.12 and 3.15 correspond to the surfaces 12 and 15 according to FIG. 1. The course of the working cycle can be seen from the description according to FIG. 1. The fineblanking press is provided with an installation space adjustment 3.6 , which is arranged below the ram 1 . The columns 3 are provided with a thread 3.6.1 at the lower end. The threaded nut 3.7 is rotatably fastened to the plunger 1 with fastening elements 3.7.1 . The threaded nuts 3.7 are provided with teeth for chain or toothed belt drives. The four nuts 3.7 are adjusted synchronously via a chain or a toothed belt. The adjustment can be made so that at different heights of the fineblanking tools, the stop surface 7.1 of the piston 7 hits the cylinder housing 6 at the end of the working stroke.

Figur 4Figure 4

Das hiesige Beispiel zeigt eine Feinschneidpresse mit einfach wirkenden Zylindersystemen. Die Wirkungs- und Arbeitsweise ist ähnlich wie in Fig. 2 beschrieben, die Zylinderanordnung ist ähnlich wie in Fig. 3 dargestellt.The example here shows a fineblanking press with simple acting cylinder systems. The way it works and works is similar to that described in Fig. 2, the cylinder arrangement is similar to that shown in Fig. 3.

Figur 5Figure 5

Dargestellt ist eine Feinschneidpresse, die in ihrer Wirkungsweise in Fig. 1 und 3 beschrieben wurde. Die vier Vorspannzylinder B und B3 (Fig. 1, 3) werden durch einen Zylinder B5 ersetzt. Der Zylinder B5 ist zwischen Ständer 4 und einer zweiten Traverse 5.2 angeordnet. Eine Einbauraumverstellung 3.6 ist, wie in Fig. 3 beschrieben, unterhalb der Traverse 5.2 angeordnet.Shown is a fineblanking press, the mode of operation of which was described in FIGS. 1 and 3. The four bias cylinders B and B3 (Fig. 1, 3) are replaced by a cylinder B5 . The cylinder B5 is arranged between the stand 4 and a second crossbeam 5.2 . An installation space adjustment 3.6 , as described in FIG. 3, is arranged below the cross member 5.2 .

Figur 6Figure 6

Diese Ausführung der Feinschneidpresse unterscheidet sich von der Ausführung nach Fig. 1 dadurch, dass die vier Arbeitszylinder A durch einen Zylinder A6 mit Einbauraumverstellung ersetzt werden. Der Gegenhalterzylinder D6 ist im Kolben 6.6 des Arbeitszylinders A6 integriert. Die Wirkungsweise ist in Fig. 2 für den Hauptantrieb und in Fig. 1 für den Ringzacken- und Gegenhalterzylinder beschrieben.This version of the fineblanking press differs from the version according to FIG. 1 in that the four working cylinders A are replaced by a cylinder A6 with installation space adjustment. The counter-holding cylinder D6 is integrated in the piston 6.6 of the working cylinder A6 . The mode of operation is described in Fig. 2 for the main drive and in Fig. 1 for the ring prong and counter-holding cylinder.

Figur 7Figure 7

Die hier abgebildete Feinschneidpresse ist im Aufbau mit der Ausführung nach Fig. 6 identisch, nur der Ringzackenzylinder C6 wird durch vier Zylinder C7, die im oberen Bereich der Säulen 3 angeordnet sind, ersetzt. Die Wirkungsweise der Ringzackenzylinder ist in Fig. 1 beschrieben. The structure of the fineblanking press shown here is identical to that of FIG. 6, only the ring-serrated cylinder C6 is replaced by four cylinders C7, which are arranged in the upper region of the columns 3 . The mode of operation of the ring-toothed cylinders is described in FIG. 1.

Figur 8Figure 8

Nun wurden die Ringzackenzylinder C8 am unteren Ende der Säulen 3 im Stössel 1 integriert. Zur Wirkungsweise siehe bei Fig. 1.Now the ring serrated cylinders C8 have been integrated in the plunger 1 at the lower end of the columns 3 . For the mode of operation, see Fig. 1.

Figur 9Figure 9

Jetzt sind die Arbeits- und Ringzackenzylinder an den Säulen 3 der Feinschneidpresse angeordnet; eine Einbauraumverstellung, wie in Fig. 3 dargestellt, kann alternativ eingebaut werden. Die Ringzackenzylinder C9 sind, wie in Fig. 7 dargestellt, ausgeführt, und die Arbeitszylinder A9 entsprechen der Ausführung nach Fig. 1 und 2. Zur Wirkungsweise siehe wieder bei Fig. 1.Now the working and serrated cylinders are arranged on the columns 3 of the fineblanking press; an installation space adjustment, as shown in Fig. 3, can alternatively be installed. The ring-toothed cylinders C9 are designed as shown in FIG. 7, and the working cylinders A9 correspond to the version according to FIGS. 1 and 2. For the mode of operation, see again in FIG. 1.

Figur 10Figure 10

Bei dieser Ausführung ist ein doppeltwirkender Arbeitszylinder A10 im unteren Querhaupt des Ständers 4 angeordnet. Die Arbeitsweise entspricht den Ausführungen zur Fig. 1.In this embodiment, a double-acting working cylinder A10 is arranged in the lower crosshead of the stand 4 . The method of operation corresponds to that of FIG. 1.

Figur 11Figure 11

Abgebildet ist eine Feinschneidpresse mit mechanischem Hauptantrieb. Der Hauptantrieb kann, wie dargestellt, als Exzenter- oder, wie nicht dargestellt, als Kniehebelantrieb ausgeführt werden. Der Zustell-, Arbeits- und Rückhub des Stössels 1 wird durch den mechanischen Antrieb ausgeführt. Die Ringzacken- C11 und Gegenhalterzylinder D11 entsprechen in der Wirkungsweise der Beschreibung nach Fig. 1. Eine Einbauraumverstellung, wie in Fig. 4 dargestellt, erlaubt die Verwendung von Werkzeugen mit unterschiedlicher Höhe. Die Arbeitskraft des mechanischen Hauptantriebes wird durch die Ringzacken- und Gegenhalteranpresskraft nicht gemindert.A fineblanking press with a mechanical main drive is shown. The main drive can, as shown, be designed as an eccentric or, as not shown, as a toggle lever drive. The feed, working and return stroke of the ram 1 is carried out by the mechanical drive. The mode of operation of the ring-point C11 and counter-holding cylinder D11 corresponds to the description according to FIG. 1. An installation space adjustment, as shown in FIG. 4, allows the use of tools with different heights. The work force of the mechanical main drive is not reduced by the ring serration and counter-pressure.

Figur 12Figure 12

Ein einfach wirkender Arbeitszylinder A12 ist im oberen Querhaupt des Ständers 4 angeordnet, wobei die Arbeitsweise bei Fig. 2 beschrieben ist. Durch die Anordnung des Arbeitszylinders A12 im oberen Querhaupt, wird die Arbeitskraft direkt vom Kolben 12.4 über die Säulen 3 in den Stössel 1 geleitet. Der Ständer 4 wird durch die Arbeitskraft nicht belastet und braucht nur die Abstützkräfte des Gegenhalters aufzunehmen. Am Stössel 1 kann zusätzlich eine Führung 12.1 angebracht werden.A single-acting working cylinder A12 is arranged in the upper crosshead of the stand 4 , the mode of operation being described in FIG. 2. Due to the arrangement of the working cylinder A12 in the upper crosshead, the working force is guided directly from the piston 12.4 via the columns 3 into the plunger 1 . The stand 4 is not burdened by the worker and only needs to absorb the supporting forces of the counter-holder. A guide 12.1 can also be attached to the plunger 1 .

Figur 13Figure 13

Die abgebildete Feinschneidpresse ist im Aufbau mit der Ausführung nach Fig. 12 identisch, nur der Arbeitszylinder ist doppelt wirkend. Zur Wirkungsweise siehe bei Fig. 1.The fineblanking press shown is under construction with the version 12 identical, only the working cylinder is double acting. For the mode of operation, see Fig. 1.

Figur 14Figure 14

In der kompakten Ausführungsform ist in einer Zylinderkolbeneinheit ein Arbeitszylinder A14, ein Ringzackenzylinder C14, ein Stützzylinder E14 sowie eine Einbauraumverstellung mit Festanschlag integriert. Wie in Fig. 12 und 13 wird der Ständer 4 nicht durch die Arbeitskraft beansprucht. Über das Ventil 14.38 wird der Zustell- und Rückhub des Stössels zusätzlich durch den Gegenhalterzylinder ausgeführt. Die Kolbenstangendurchmesser wurden so abgestimmt, das durch Differenzschaltung der Zustellhub, der Gegenhalteranpressdruck und der Rückhub ausgeführt werden. Bei Stellung "0" des Ventils 14.38 sind alle Verbindungen unterbrochen, und der Stössel befindet sich in der UT-Stellung. Bei Stellung "1" werden die Zylinderräume 14.39 mit 14.34 mit der Druckmittelquelle verbunden. Die Differenzfläche 14.40 schiebt den Kolben einschliesslich Stössel 1 und Traverse 2 nach oben. Mit Beginn des Arbeitshubs wird das Ventil 14.38 in Stellung "2" umgeschaltet, der Zylinderraum 14.39 wird druckentlastet, der Zylinderraum 14.34 bleibt mit der Druckmittelquelle verbunden und erzeugt so den Gegenhalteranpressdruck. Der Rückhub wird durch Stellung "3" eingeleitet, wobei der Zylinderraum 14.34 mit dem Tank und der Zylinderraum 13.39 mit der Druckmittelquelle verbunden werden. In UT wird auf Stellung "0" umgeschaltet.In the compact embodiment, a working cylinder A14, a ring prong cylinder C14, a supporting cylinder E14 and an installation space adjustment with a fixed stop are integrated in a cylinder-piston unit. As in FIGS. 12 and 13, the stand 4 is not used by the worker. Via the valve 14.38 , the feed and return stroke of the ram is additionally carried out by the counter-holding cylinder. The piston rod diameters have been adjusted in such a way that the delivery stroke, the counter-holding pressure and the return stroke are carried out by differential switching. With position "0" of valve 14.38 , all connections are interrupted and the plunger is in the UT position. In position "1", the cylinder spaces 14.39 with 14.34 are connected to the pressure medium source. The difference surface 14.40 pushes the piston including the plunger 1 and crossbar 2 upwards. At the start of the working stroke, the valve 14.38 is switched to position "2", the cylinder space 14.39 is relieved of pressure, the cylinder space 14.34 remains connected to the pressure medium source and thus generates the counterpressure pressure. The return stroke is initiated by position "3", the cylinder space 14.34 being connected to the tank and the cylinder space 13.39 being connected to the pressure medium source. In UT it is switched to position "0".

Figur 15Figure 15

Gemäss der Ausführungsvariante nach Fig. 14 werden die Traverse 2 und der Stössel 1 beidseitig mit je einer Platte 15.2 verbunden; sie bilden einen nach oben verlängerten Stössel. Zusätzlich sind Führungselemente 15.6 und 15.8 am Stössel 1 und Ständer 4 angebracht. Das obere Querhaupt 4.1 wird mit Verbindungselementen am Ständer 4 befestigt, und die Säulen 3 aus Fig. 14 werden durch die Platten 15.1 ersetzt. Der Ständer 4 wird durch die Kraft des Arbeitszylinders A nicht beansprucht.According to the embodiment variant according to FIG. 14, the cross member 2 and the plunger 1 are connected on both sides to a plate 15.2 ; they form a plunger elongated upwards. In addition, guide elements 15.6 and 15.8 are attached to the plunger 1 and stand 4 . The upper crosshead 4.1 is fastened to the stand 4 with connecting elements, and the columns 3 from FIG. 14 are replaced by the plates 15.1 . The stand 4 is not claimed by the force of the working cylinder A.

Figur 16Figure 16

Bei dieser Ausführungsform gemäss Fig. 10 und 13 sind die doppeltwirkenden Arbeitszylinder A16 im oberen Querhaupt 4.1 um die Säulen 3 und die Ringzackenzylinder C16 in der Traverse 2 ebenfalls um die Säulen 3 angeordnet. Die herkömmliche Mittenabstützung entfällt. Die Bohrungen 16.10 für die Ringzacken-Druckbolzen 16.9 werden nicht um die Mitte angeordnet, sondern verteilen sich im oberen Querhaupt 4.1. Der Ständer 4 wird durch die Kraft des Arbeitszylinders A16 nicht beansprucht.In this embodiment according to FIGS. 10 and 13, the double-acting working cylinders A16 in the upper crosshead 4.1 are arranged around the columns 3 and the ring-toothed cylinders C16 in the cross member 2 are also arranged around the columns 3 . The conventional center support is no longer required. The bores 16.10 for the ring-serrated pressure bolts 16.9 are not arranged around the middle, but are distributed in the upper crosshead 4.1. The stand 4 is not claimed by the force of the working cylinder A16 .

Figur 17Figure 17

Gezeigt ist eine Ausführungsform, bei der die Traverse 2 als Zylindergehäuse ausgebildet ist. In der Traverse 2 sind zwei Arbeitszylinder A17, ein Ringzackenzylinder C17 und zwei Abstreifzylinder E17 integriert. Die zwei doppeltwirkenden Arbeitszylinder A17 sind seitlich in der Traverse 2 angeordnet. Der untere Kolben A17.2 bildet gemeinsam mit dem Zylindergehäuse 2 (hier als Traverse ausgebildet) den unteren Zylinderraum A17.3. Der obere Zylinderraum A17.4 wird durch das Zylindergehäuse 2 und die obere Kolbenstange A17.5 gebildet. Die beiden unteren Kolbenstangen A17.2 werden über Verbindungselemente A17.9 fest mit dem oberen Querhaupt 4.1 verbunden. Die beiden oberen Kolbenstangen A17.5 werden mit einer Platte, die als Hydraulikverteilerblock A17.10 ausgebildet ist, verbunden. Der doppeltwirkende Ringzackenzylinder C17 ist mittig zwischen den Arbeitszylindern A17 angeordnet. Der untere Kolben C17.1 bildet gemeinsam mit dem Zylindergehäuse 2 den unteren Zylinderraum C17.2. Der obere Zylinderraum C17.4 wird durch das Zylindergehäuse 2 und die obere Kolbenstange C17.5 gebildet. Am Ringzackenzylinderkolben C17.1 ist eine Platte E17.4 befestigt, auf der sich die Druckbolzen 9 abstützen. Die Abstreifzylinder E17 sind in den Kolben A17.2 integriert. Die zwei seitlich angeordneten Stützzylinder E17 können aussermittige Belastungen der Ringzackenkräfte hydraulisch kompensieren.An embodiment is shown in which the cross member 2 is designed as a cylinder housing. Two working cylinders A17, a ring- toothed cylinder C17 and two stripping cylinders E17 are integrated in the traverse 2 . The two double-acting working cylinders A17 are arranged laterally in the cross arm 2 . The lower piston A17.2 forms together with the cylinder housing 2 (here designed as a traverse) the lower cylinder space A17.3. The upper cylinder space A17.4 is formed by the cylinder housing 2 and the upper piston rod A17.5 . The two lower piston rods A17.2 are firmly connected to the upper crosshead 4.1 via connecting elements A17.9 . The two upper piston rods A17.5 are connected to a plate that is designed as a hydraulic distributor block A17.10 . The double-acting ring tooth cylinder C17 is arranged in the middle between the working cylinders A17 . The lower piston C17.1 forms together with the cylinder housing 2 the lower cylinder space C17.2. The upper cylinder chamber C17.4 is formed by the cylinder housing 2 and the upper piston rod C17.5 . A plate E17.4 on which the pressure bolts 9 are supported is attached to the ring- toothed cylinder piston C17.1 . The scraper cylinders E17 are integrated in the piston A17.2 . The two support cylinders E17 arranged on the side can hydraulically compensate for eccentric loads on the ring spike forces.

Die Stösselplatte 1 bildet mit den Platten 3' und der Traverse 2 den Pressenstössel. Der Gegenhalterzylinder D17 ist unterhalb der Stösselplatte 1 im unteren Querhaupt des Ständers 4 angeordnet. Die zwei seitlich angeordneten Stützzylinder F17 können aussermittige Belastungen der Gegenhalterkräfte hydraulisch kompensieren. Die Ausstosszylinder F17 sind an der Stösselplatte 1 befestigt. Der Ständer 4 wird nicht durch die Arbeitskraft der Arbeitszylinder A17 beansprucht.The ram plate 1 forms the press ram with the plates 3 ' and the cross member 2 . The counter-holding cylinder D17 is arranged below the plunger plate 1 in the lower crosshead of the stand 4 . The two side cylinders F17 can hydraulically compensate for eccentric loads on the counter-holding forces. The discharge cylinders F17 are attached to the plunger plate 1 . The stand 4 is not used by the work force of the working cylinders A17 .

Figur 18Figure 18

Im Gegensatz zur Feinschneidpresse gemäss Fig. 17, sind hier die Arbeits-, Ringzacken- und Gegenhalterzylinder einfachwirkend. Zur Wirkungsweise der Presse siehe bei Fig. 2 und 17.In contrast to the fineblanking press according to FIG. 17, the working, ring-serrated and counter-holding cylinders are single-acting here. For the mode of operation of the press, see FIGS. 2 and 17 .

Figur 19Figure 19

Es ist eine Feinschneidpresse, wie in Fig.17 beschrieben, dargestellt, wobei eine Umkehr der beweglichen und festen Maschinenkomponenten durchgeführt wurde. Die Stösselplatte 1' ist fest mit dem Maschinenständer verbunden, und die Funktion des Pressenstössels wird vom beweglichen Stössel 4.1' übernommen. Die Stösselplatte 1', die Traverse A19.1 und die Platten 3' sind fest miteinander verbunden, sie bilden gemeinsam den Ständer der Feinschneidpresse. Die Platten 3' sind über die Stösselplatten 1' nach unten verlängert und bilden im Bereich 3.2' den Fuss des Ständers. Mit der Traverse A19.1 sind die Gehäuse der zwei Arbeitszylinder A19 und das Gehäuse des Ringzackenzylinders C19 fest mit dem Ständer verbunden. Die beiden unteren Kolbenstangen A19.2 der Arbeitszylinder A19 sind durch Verbindungselemente A19.9 am beweglichen Stössel 4.1' befestigt. Die Kolbenstange C19.1 des Ringzackenzylinders C19 ist über die Platte E19.4 durch hydraulische Kopplung der Stützzylinder E19 mit dem Stössel 4.1' verbunden. Das Zylindergehäuse D19.6 des Gegenhalterzylinders D19 ist unterhalb der Stösselplatte 1' mit der beweglich angeordneten Traverse D19.9 fest verbunden. Der Stössel 4.1' und die Traverse D19.9 sind durch die Platten 4' und Verbindungselemente D19.8 miteinander verbunden. Anstelle der Platten 3',4' könnten auch Säulen verwendet werden.A fineblanking press, as described in FIG. 17, is shown, wherein the movable and fixed machine components have been reversed. The ram plate 1 ' is firmly connected to the machine stand, and the function of the press ram is taken over by the movable ram 4.1' . The ram plate 1 ', the crossbeam A19.1 and the plates 3' are firmly connected to one another, together they form the stand of the fineblanking press . The plates 3 ' are extended downwards over the ram plates 1' and form the foot of the stand in the region 3.2 ' . With the traverse A19.1 , the housing of the two working cylinders A19 and the housing of the ring prong cylinder C19 are firmly connected to the stand. The two lower piston rods A19.2 of the working cylinders A19 are fastened to the movable plunger 4.1 ' by connecting elements A19.9 . The piston rod C19.1 of the serrated cylinder C19 is connected to the plunger 4.1 ' via the plate E19.4 by hydraulic coupling of the support cylinder E19 . The cylinder housing D19.6 of the counter-holding cylinder D19 is firmly connected below the tappet plate 1 ' to the movably arranged crossbar D19.9 . The ram 4.1 ' and the crossbar D19.9 are connected to each other by the plates 4' and connecting elements D19.8 . Instead of the plates 3 ', 4' , columns could also be used.

Die Zustellzylinder G19 sind mit ihren Zylindergehäusen an den Platten 3' mit den Kolbenstangen am Stössel 4.1' befestigt. Beim Schliessen des Werkzeuges wird über die Zustellzylinder G19 der Stössel 4.1' und das mit diesem fest verbundene Gehäuse D19.6 des Gegenhalterzylinders D19 nach unten bewegt. Während dieser Zustellbewegung findet eine Relativbewegung zwischen den Kolbenstangen und den Zylindergehäusen der Arbeitszylinder A19, des Ringzackenzylinders C19 und des Gegenhalterzylinders D19 statt. Das Druckmittel wird von den oberen Zylinderräumen in die unteren Zylinderräume umgeschichtet. Die Arbeitsweise der doppeltwirkenden Zylinder ist in Fig. 1 beschrieben.The delivery cylinders G19 are attached with their cylinder housings to the plates 3 ' with the piston rods on the plunger 4.1' . When closing the tool via the feeding cylinder, the plunger G19 4.1 'and integral with this housing is moved D19.6 of the counter-holder cylinder D19 downward. During this feed movement, there is a relative movement between the piston rods and the cylinder housings of the working cylinders A19, the ring-toothed cylinder C19 and the counter-holding cylinder D19 . The pressure medium is shifted from the upper cylinder rooms to the lower cylinder rooms. The operation of the double-acting cylinder is described in Fig. 1.

Claims (14)

  1. Precision cutting press having a hydraulically or mechanically driven ram (1) with at least one respective hydraulic annular toothed and counterholder cylinder (C and D), characterised in that
    a) the at least one annular toothed cylinder (C) is incorporated above the upper crossbar (4.1) of the stand (4) in a cross-piece member (2) and is securedly connected to the ram (1) via columns (3) or to plates (15.1), so that the cross-piece member (2) is synchronously displaced upwardly with the ram (1);
    b) the at least one counterholder cylinder (D) is disposed between ram (1) and lower crossbar of the stand (4);
    c) the piston (13) of the annular toothed cylinder (C) is retained in its lower position by a supporting cylinder (E), which is actuated by pressure medium, and hereby remains in constant contact with the clamping bolts (9) of the upper tool;
    d) through the securement (23) of the supporting cylinder piston (E) on the stand (4) and the incorporation in the annular toothed cylinder piston (13), the latter yields upwardly with the relief of pressure during the working stroke;
    e) at the end of the working stroke, the supporting cylinder (E), which is actuated by pressure medium, pushes the annular toothed piston (13) into its lower basic position and simultaneously scrapes the annular toothed stamped lattice;
    f) the piston (35) of the counterholder cylinder (D) is retained in its upper position by a supporting cylinder (F), which is actuated by pressure medium, whereby it remains in constant contact with the clamping bolts (36) of the lower tool;
    g) through the securement (46) of the supporting cylinder piston (44) on the ram (1) and the incorporation in the counterholder cylinder piston (35), the latter yields downwardly with the relief of pressure during the working stroke; and
    h) at the end of the working stroke, the supporting cylinder (F), which is actuated by pressure medium, pushes the counterholder piston (35) into its upper basic position and simultaneously rams the precision cutting part into the tool chamber.
  2. Precision cutting press according to claim 1, characterised in that
    a) the ram (1) is securedly connected to the cross-piece member (2) by at least two columns (3), which penetrate upwardly through the stand (4);
    b) the securement of the columns (3) on the ram (1) is effected via connecting members (3.4), a second shoulder portion of the columns (3) beneath the ram (1) being configured as a piston (3.1), and a cylinder housing (5) surrounding this piston (3.1) and forming the cylinder chamber (5.1), which is actuated by pressure medium, of the working cylinder (A), which is incorporated in the stand (4);
    c) a respective cylinder-and-piston unit (B) is disposed between ram (1) and cross-piece member (2) on the columns (3), the cylinder-and-piston unit (B) comprising the cylinder housing (6), which surrounds the columns (3) in a tubular manner in the upper region, and an annular piston (7), which is connected to the column (3);
    d) in the lower region, the piston (7) has a shoulder portion (7.1) with an increasing annular diameter, the shoulder portion (7.1) serving as a fixed stop member for the working stroke, and the hydraulic active faces of the annular piston (7) and of the piston (3.1) being identical in size;
    e) the annular toothed cylinder (C) and the counterholder cylinder (D) have at least the stroke length of the working cylinder (A); and
    f) the annular toothed cylinder (C) and the counterholder cylinder (D) are hydraulically initially tensioned cylinders, so that the annular toothed cylinder compressive force and the counterholder cylinder compressive force become immediately effective through the relief of pressure.
  3. Precision cutting press according to claim 1, characterised in that the single-acting pressure medium cylinders, i.e. the annular toothed cylinders (C2) and/or the counterholder cylinders (D2) and/or the working cylinders (A2), can be filled with pressure medium during the delivery displacement, and this is preferably effected via feeder valves or shut-off valves from a pressureless or respectively pressurised reservoir.
  4. Precision cutting press according to claim 1, characterised in that
    a) the working cylinder (A, A3) is disposed in the upper crossbar (4.1) of the stand (4), so that the lateral parts of the stand (4) remain free of the load of the working cylinder (A3),
    b) the single- or double-acting annular toothed cylinder (C, C3) being able to be incorporated in the piston (3.5.2) of the working cylinder (A3);
    c) at least one counteracting cylinder (B3) is associated with the single-acting working cylinder (A3); and
    d) the columns (3) in the lower region are each connected via an adjustment means (3.6) to the ram (1).
  5. Precision cutting press according to claim 1, characterised in that
    a) the columns (3) in the lower region are each connected via an adjustment means (3.6) to a second cross-piece member (5.2), and a cylinder-and-piston unit (B5) is disposed between the second cross-piece member (5.2) and the stand (4); and
    b) the hydraulic active faces of the working cylinder (A5) and of the counteracting cylinder (B5) are identical in size.
  6. Precision cutting press according to claim 1, characterised in that
    a) a working cylinder (A6) is disposed in the lower region of the stand (4);
    b) the working cylinder (A6) is connected to the stand (4) via an adjustment means (6.5.3); and
    c) a counterholder cylinder (D6), which is actuated by pressure medium, is disposed in the piston (6.6) of the working cylinder (A6).
  7. Precision cutting press according to claim 6, characterised in that
    a) a respective annular toothed cylinder (C7) is disposed in the upper region of the columns (3);
    b) the columns (3) in the upper region are configured as piston rods (7.10, 7.13) and as pistons (7.11), whereby
    c) a hydraulic connection is formed between ram (1) and cross-piece member (2).
  8. Precision cutting press according to claim 6, characterised in that
    a) a respective annular toothed cylinder (C8) is disposed in the lower region of the columns (3);
    b) the columns (3) in the lower region are configured as piston rods (8.8, 8.10) and as pistons (8.11), whereby
    c) a hydraulic connection is formed between ram (1) and cross-piece member (2).
  9. Precision cutting press according to claim 7, characterised in that
    a) in the lower region of the columns (3), a single- or double-acting working cylinder (A9, A10) is disposed in each column (3); and
    b) the columns (3) in the lower region are configured as pistons (9.3.1, 10.4).
  10. Precision cutting press according to claim 1, characterised in that
    a) the no-load infeed, working and return displacement is actuated by a mechanical drive (11.3.1 to 11.3.4);
    b) the annular toothed and counterholder cylinders (C11, D11) are hydraulic; and
    c) the mechanical drive (11.3.1 to 11.3.4) is disposed between upper crossbar (4.1) of the stand (4) and cross-piece member (2) or between lower crossbar of the stand (4) and ram (1).
  11. Precision cutting press according to claim 1, characterised in that
    a) the columns (3) in the region of the upper crossbar of the stand (4) are each configured as a single- or double-acting working cylinder (A12, A13); and
    b) a respective single- or double-acting annular toothed cylinder (C16) can be disposed on the columns (3) in the region of the cross-piece member (2).
  12. Precision cutting press according to claim 1, characterised in that
    a) the working cylinder (A14), the annular toothed cylinder (C14), the supporting cylinder (E14) and the installation area adjustment means (H14) are disposed in the cross-piece member (2);
    b) the cross-piece member (2) is securedly connected to the ram (1) via columns (3); or
    c) the cross-piece member (2) and the ram (1) are securedly interconnected with plates (15.1).
  13. Precision cutting press according to claim 1, characterised in that
    a) two single- or double-acting working cylinders (A17, A18), one single- or double-acting annular toothed cylinder (C17, C18) and two supporting cylinders (E17) are disposed in the cross-piece member (2);
    b) the cross-piece member (2) serves as a cylinder housing for the annular toothed cylinder (C17) and the working cylinders (A17);
    c) in the lower region, the pistons (A17.2) of the working cylinder (17*) are securedly connected with connecting members (A17.9) to the upper crossbar (4.1) of the stand (4);
    d) the annular toothed cylinder (C17) is disposed between the two working cylinders (A17, A18) in the cross-piece member (2);
    e) the lower piston (C17.1) of the annular toothed cylinder (C17) and the pistons (E17.1) of the supporting cylinders (E17) are jointly connected to a plate (E17.4);
    f) the supporting cylinders (E17) are incorporated in the lower pistons (A17.2) of the working cylinder (A17);
    g) any eccentric loadings of the annular toothed cylinder (C17) which occur can be hydraulically compensated-for via the supporting cylinders (E17) and valves (E17.3);
    h) the cross-piece member (2) and the ram plate (1) are securedly interconnected with plates (31) via connecting members (J17.3, J17.4) and jointly form the press ram;
    i) guides (J17.1) are secured on the stand (4) in the upper and lower regions of the press ram;
    j) adjustable, interconnected stop members (H17) are disposed on the ram plate (1), which stop members upwardly limit the ram stroke and serve as a fixed stop member;
    k) supporting cylinders (F17) are secured on the ram plate underside (1);
    1) the upper pistons (D17.7) of the counterholder cylinder (D17) and the pistons (F17.1) of the supporting cylinders (F17) of the ram plate are jointly connected to a plate (F17.4);
    m) any eccentric loadings of the counterholder cylinder (D17) which occur can be hydraulically compensated-for via the supporting cylinders (F17) of the ram plate and valves (F17.3); and
    n) any eccentric loadings which occur during the working stroke can be hydraulically compensated-for via the working cylinders (A17) and the valves (A17.8).
  14. Precision cutting press having a hydraulically or mechanically driven ram (1) with at least respectively one hydraulic single- or double-acting annular toothed and counterholder cylinder, the supporting plates on the annular toothing and counterholder being provided partially with central supports, characterised in that
    a) a ram plate (11) and a cross-piece member (A19.1) are securedly interconnected by means of plates (31) or columns, and they jointly form the stand of the precision cutting press;
    b) the housing of the at least one working cylinder (A19) and the housing of the annular toothed cylinder (C19) are securedly connected to the stand with the cross-piece member (A19.1);
    c) the lower piston rods (A19.2) of the working cylinders (A19) are secured by connecting members (A19.9) on a displaceable upper ram (4.11), and the piston rod (C19.1) of the annular toothed cylinder (C19) is connected via a plate (E19.4), by hydraulic coupling of the supporting cylinders (E19), to the upper ram (4.11);
    d) the cylinder housing (D19.6) of the counterholder cylinder (D19) is securedly connected beneath the ram plate (11) to a displaceably disposed cross-piece member (D19.9), and the upper ram (4.11) and the displaceably disposed cross-piece member (D19.9) are interconnected by the plates (41) or columns;
    e) delivery cylinders (G19) with their cylinder housings on the columns or plates (31), which are associated with the ram plate, are secured with the piston rods on the upper ram (4.11) so that, when the tool is closed via the delivery cylinders (G19), the upper ram (4.11) and the housing (D19.6) of the counterholder cylinder (D19), which housing is securedly connected to said upper ram, are displaced downwardly;
    f) the piston (C19.1) of the annular toothed cylinder (C19) is retained in its lower position by at least one supporting cylinder (E19), which is actuated by pressure medium, and hereby remains in constant contact with the clamping bolts (9) of the upper tool;
    g) the supporting cylinders (E19) are preferably incorporated in the lower pistons (A19.2) of the working cylinder (A19);
    h) any eccentric loadings of the annular toothed cylinder (C19) which occur can be hydraulically compensated-for via the supporting cylinders (E19);
    i) adjustable, interconnected stop members (H19) are disposed on the ram plate (11), which stop members limit the ram stroke downwardly and serve as a fixed stop member;
    j) supporting cylinders (F19) are secured on the ram plate underside (11);
    k) the upper pistons (D19.7) of the counterholder cylinder (D19) and the pistons (F19.1) of the supporting cylinders (F19) of the ram plate are jointly connected to a plate (F19.4);
    l) any eccentric loadings of the counterholder cylinder (D19) which occur can be hydraulically compensated-for via the supporting cylinders (F19) of the ram plate and valves; and
    n) any eccentric loadings which occur during the working stroke can be hydraulically compensated-for via the working cylinders (A19).
EP97907241A 1996-03-28 1997-03-27 Precision blanking press with knife-edged ring and counter cylinder Expired - Lifetime EP0891235B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19612351 1996-03-28
DE19612351 1996-03-28
PCT/IB1997/000312 WO1997035675A1 (en) 1996-03-28 1997-03-27 Precision blanking press with knife-edged ring and counter cylinder

Publications (2)

Publication Number Publication Date
EP0891235A1 EP0891235A1 (en) 1999-01-20
EP0891235B1 true EP0891235B1 (en) 2003-10-08

Family

ID=7789734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97907241A Expired - Lifetime EP0891235B1 (en) 1996-03-28 1997-03-27 Precision blanking press with knife-edged ring and counter cylinder

Country Status (9)

Country Link
US (1) US6240818B1 (en)
EP (1) EP0891235B1 (en)
JP (1) JP2000507880A (en)
KR (1) KR20000005076A (en)
CN (1) CN1219895A (en)
AT (1) ATE251512T1 (en)
DE (2) DE19642635A1 (en)
ES (1) ES2208880T3 (en)
WO (1) WO1997035675A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3115122A1 (en) 2015-07-06 2017-01-11 Feintool International Holding AG Device and method for stripping/ejecting a stamping frame/internally moulded part and ejection of a cut part in a precision cutting press
EP3115190A1 (en) 2015-07-06 2017-01-11 Feintool International Holding AG Device and method for controlling the principal drive of a precision cutting press

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19929163C1 (en) * 1999-06-25 2001-01-18 Feintool Internat Holding Ag L Device for fine cutting workpieces from a sheet metal
DE10005023C2 (en) * 2000-02-04 2002-11-21 Feintool Internat Holding Ag L Precision cutting press
JP4865963B2 (en) * 2001-08-06 2012-02-01 株式会社大平製作所 Wire rod material pressing method and apparatus
DE102004006126B4 (en) * 2004-02-07 2006-12-28 Horst Baltschun Press with locked ram
DE102005053350A1 (en) * 2005-11-07 2007-05-10 Schuler Pressen Gmbh & Co. Kg Press with cutting impact damping
JP4939173B2 (en) * 2006-11-01 2012-05-23 しのはらプレスサービス株式会社 Horizontal opposed sliding press machine
PL2042249T3 (en) * 2007-09-26 2010-08-31 Feintool Ip Ag Method and device for manufacturing stamping parts with a largely smooth cutting plane and larger functional area
DE102009017626B3 (en) * 2009-04-16 2010-12-16 Horst Baltschun Precision cutting press
US8850971B1 (en) * 2009-10-29 2014-10-07 Us Synthetic Corporation Reinforced press base, strengthening ring, and method of reinforcing a press base
DE102011016669B4 (en) * 2011-04-12 2016-03-24 Schuler Pressen Gmbh Method for operating a press with sub-drive and then operated press
EP2608299B1 (en) * 2011-12-22 2014-04-09 Feintool Intellectual Property AG Device and method for manufacturing metallic bipolar panels
DE102012025134A1 (en) * 2012-12-21 2014-06-26 Uniflex-Hydraulik Gmbh forming press
DE102013001165B3 (en) * 2013-01-23 2014-07-03 Horst Baltschun Deep-drawing press for performing deep-drawing and fine cutting process of workpiece, has short-stroke cylinder generating ring prongs force, where press is equipped with deep-drawing tool and fine cutting tool
DE102013015180A1 (en) * 2013-09-11 2015-03-12 Webo Werkzeugbau Oberschwaben Gmbh Method and device for precision cutting of workpieces in a press
EP3115120B1 (en) * 2015-07-06 2018-09-05 Feintool International Holding AG Precision cutting press
CN105127273B (en) * 2015-09-30 2017-09-12 苏州索力旺新能源科技有限公司 A kind of conducting strip tie point thrusts mechanism
DE102015016102A1 (en) * 2015-12-11 2017-06-14 Schuler Pressen Gmbh Precision cutting press
DE102015016149A1 (en) 2015-12-12 2017-06-14 Ulrich Keller RF cylinder
EP3736061B1 (en) * 2019-05-06 2024-08-07 Lapmaster Wolters GmbH Fine blanking system and method for operating the same
CN111572083B (en) * 2020-04-17 2021-04-13 江苏国力锻压机床有限公司 Hydraulic press for glass fiber reinforced plastic products

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1249805B (en) * 1967-09-14
US2547118A (en) * 1944-11-30 1951-04-03 Baker Perkins Inc Biscuit and like cutting and embossing machine
US2642138A (en) * 1951-03-07 1953-06-16 Macewka John Hydraulically actuated press
CH370618A (en) * 1959-03-04 1963-07-15 Almatic Ag Hydraulically controlled punch press
US3570343A (en) * 1968-10-18 1971-03-16 Dro Systems Inc Di Structure for fine blanking
US3564959A (en) * 1968-11-29 1971-02-23 Aida Tekkosho Kk Fine blanking press
US3611854A (en) * 1969-10-30 1971-10-12 Vitaly Konstantinovich Gilev Compound die for punching two concentrically shaped sheet circular members from strap material in punch presses with vertical disposition of blanking planes
US3771396A (en) * 1971-11-18 1973-11-13 Amplex Corp Magnetic tape press
CH551812A (en) * 1972-03-03 1974-07-31 Hydrel Ag FINE CUTTING PRESS.
NL7501729A (en) * 1975-02-14 1976-08-17 Perswerk De Jong B V PROCESS FOR CONVERTING A SINGLE PRESSURE FORCE INTO SEPARATE PRESSURE FORCES, AS WELL AS A DEVICE FOR PERFORMING THE PROCEDURE.
AU571538B2 (en) * 1983-06-28 1988-04-21 Repco Ltd. Hydraulic press
US4662256A (en) * 1985-05-13 1987-05-05 Rochez Bros. Inc. Die set
DE3728418A1 (en) * 1987-08-26 1989-03-09 Horst Baltschun DYNAMIC PRESSURE PRESSURE PRESS
DE3808344A1 (en) * 1988-03-12 1989-09-28 Horst Baltschun Column press for large eccentric loads and dampening of the cutting shock
US4934230A (en) * 1988-08-24 1990-06-19 Wallis Bernard J Die stamping system
DE3931320C1 (en) * 1989-09-20 1991-08-08 Feintool International Holding, Lyss, Ch
US5692423A (en) * 1995-05-09 1997-12-02 Kabushiki Kaisha Fujikoshi Vibration finishing method and apparatus for same
US5749279A (en) * 1996-03-20 1998-05-12 General Motors Corporation Hydraulic punch actuator with centering apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3115122A1 (en) 2015-07-06 2017-01-11 Feintool International Holding AG Device and method for stripping/ejecting a stamping frame/internally moulded part and ejection of a cut part in a precision cutting press
EP3115190A1 (en) 2015-07-06 2017-01-11 Feintool International Holding AG Device and method for controlling the principal drive of a precision cutting press
US10479040B2 (en) 2015-07-06 2019-11-19 Feintool International Holding Ag Device and method for controlling the primary drive of a fine blanking press
US10682782B2 (en) 2015-07-06 2020-06-16 Feintool International Holding Ag Apparatus and method for stripping away/pushing out a punched grid/internally formed part and ejecting a blanked part in a precision blanking press

Also Published As

Publication number Publication date
KR20000005076A (en) 2000-01-25
DE59710835D1 (en) 2003-11-13
EP0891235A1 (en) 1999-01-20
ATE251512T1 (en) 2003-10-15
US6240818B1 (en) 2001-06-05
DE19642635A1 (en) 1997-10-02
CN1219895A (en) 1999-06-16
ES2208880T3 (en) 2004-06-16
WO1997035675A1 (en) 1997-10-02
JP2000507880A (en) 2000-06-27

Similar Documents

Publication Publication Date Title
EP0891235B1 (en) Precision blanking press with knife-edged ring and counter cylinder
DE102007017595B3 (en) Precision cutting press for producing precision cut parts of metal strip, has cross bars that are pressed against flange and plunger by force of respective cylinders during power stroke and are long such that bars support tool at pins
DE19929163C1 (en) Device for fine cutting workpieces from a sheet metal
EP3115120A1 (en) Precision cutting press
EP1247599A1 (en) Drive unit for inserting tool
EP2848398B1 (en) Device and method for preventing a tool from breaking during fine cutting and/or forming a work piece
DE102009017624B4 (en) Deep Drawing Press
DE102014003229B4 (en) Energy-efficient preloaded compact press
DE102009017626B3 (en) Precision cutting press
DE10005023C2 (en) Precision cutting press
EP2719504A1 (en) Tension device for straining a threaded bolt
DE3030050A1 (en) LOAD BALANCING DEVICE FOR PRESS TOOLS
EP0707549A1 (en) Tensioning and shock-absorption device for the idler wheel of a tracked vehicle
DE102004006126A1 (en) Hydraulic press has press ram locked to lower belt after advancing stroke by piston rods of hydraulic piston-cylinder units
DE10215003A1 (en) Hydraulic press used for deep drawing operations has press body connected to two columns in each of three piston and cylinder assemblies
DE4302263A1 (en) Mechanical transfer press with hydraulic units
WO2005075183A1 (en) Press comprising a locked slide
DD158750A5 (en) QUICK-OPENING FORGING MACHINE
DE2128867A1 (en) Overload protection for the drive elements of presses
WO2007093136A1 (en) Hydraulic processing pincers
DE3915263C2 (en) Screw press
EP0510506B1 (en) Hydro-mechanical press
DE10304052A1 (en) Hydraulic press used for performing deep-drawing press and fine cutting works, includes cylinder piston unit that sets setting stroke, and another cylinder piston unit that sets working stroke
DE4419676A1 (en) Simplified, energy-saving hydraulic under-clamp for sheet metal pressing
DE19643396A1 (en) Hydraulic control system for fast-acting load change of hydraulic press

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19981012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FEINTOOL INTERNATIONAL HOLDING AG

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BALTSCHUN, HORST

17Q First examination report despatched

Effective date: 20011025

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031008

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031008

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 59710835

Country of ref document: DE

Date of ref document: 20031113

Kind code of ref document: P

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: FREI PATENTANWALTSBUERO

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20031203

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040108

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040331

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2208880

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040709

BERE Be: lapsed

Owner name: *FEINTOOL INTERNATIONAL HOLDING A.G.

Effective date: 20040331

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20050310

Year of fee payment: 9

Ref country code: CH

Payment date: 20050310

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050311

Year of fee payment: 9

Ref country code: AT

Payment date: 20050311

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050314

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20050322

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20050323

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20050527

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060327

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060328

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060328

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060331

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060331

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061003

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060327

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20061001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20061130

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20060328

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040308

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070327