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EP0155619B1 - Procédé pour réaliser des liaisons de tôles - Google Patents

Procédé pour réaliser des liaisons de tôles Download PDF

Info

Publication number
EP0155619B1
EP0155619B1 EP85102777A EP85102777A EP0155619B1 EP 0155619 B1 EP0155619 B1 EP 0155619B1 EP 85102777 A EP85102777 A EP 85102777A EP 85102777 A EP85102777 A EP 85102777A EP 0155619 B1 EP0155619 B1 EP 0155619B1
Authority
EP
European Patent Office
Prior art keywords
die
sheet
anvil
punch
slits
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
EP85102777A
Other languages
German (de)
English (en)
Other versions
EP0155619A3 (en
EP0155619A2 (fr
Inventor
Gerd-Jürgen Eckold
Hans Maass
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.)
Walter Eckold GmbH and Co KG Vorrichtungs und Geraetebau
Original Assignee
Walter Eckold GmbH and Co KG Vorrichtungs und Geraetebau
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
Priority claimed from DE19848408792 external-priority patent/DE8408792U1/de
Priority claimed from DE19848408793 external-priority patent/DE8408793U1/de
Application filed by Walter Eckold GmbH and Co KG Vorrichtungs und Geraetebau filed Critical Walter Eckold GmbH and Co KG Vorrichtungs und Geraetebau
Priority to AT85102777T priority Critical patent/ATE49521T1/de
Publication of EP0155619A2 publication Critical patent/EP0155619A2/fr
Publication of EP0155619A3 publication Critical patent/EP0155619A3/de
Application granted granted Critical
Publication of EP0155619B1 publication Critical patent/EP0155619B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/34—Means for forming clench-tongue [eg, for tieband]
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49833—Punching, piercing or reaming part by surface of second part
    • Y10T29/49835—Punching, piercing or reaming part by surface of second part with shaping
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49915—Overedge assembling of seated part
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5343—Means to drive self-piercing work part
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/49—Member deformed in situ
    • Y10T403/4974—Member deformed in situ by piercing

Definitions

  • the invention relates to a clinching method in which two sheets lying flat on top of one another are connected to one another by cutting, pressing through sheet metal material and extruding the pressed material behind the incisions.
  • extruding Regarding the term "enforcement”, DIN 8593, Part 5, Section 4.5.2.11. to refer.
  • a method according to the preamble of claim 1 is known from GB-A-2 104 430.
  • a clinching device for joining sheet metal lying flat on top of one another comprising a die with a central anvil part and with support parts projecting outward from the anvil and provided with cutting edges at their free end and projecting over an anvil work surface, and a punch which is passed through the die relative to the die Sheets can be moved towards the anvil work surface is disclosed in EP-B-0 077 932; with it, for example, the joint connection can be made in accordance with the aforementioned DIN sheet.
  • the stamp or the stamps have a counter cutting edge for each die cutting edge, in the preferred case two parallel cutting edges and two counter cutting edges.
  • the stamp cuts through both sheets along congruent lines, and the material pressed through on the die side is squeezed.
  • This known device has the advantage of very small dimensions relative to the thickness of the sheets to be connected, and both the punch and the die are very easy to manufacture.
  • the strength of the "joining point" produced with the known device is by far sufficient in most cases, there was nevertheless a need to increase the strength of the connection, and it is the object of the present invention to provide a clinching method to create, in which the joining strength is increased compared to the values achievable with the known devices.
  • the non-cut sheet remains fluid-tight at the joint, and also coatings such as galvanizing or plating are not cut through, so that a generally desired corrosion protection is generally maintained.
  • a group of publications describes methods or devices in which one sheet is cut and the other sheet is pressed through by means of a first press stroke, then the semi-finished joint connection is pressed out of the die and finished by means of a second press stroke.
  • jointed surfaces of the joint are all rounded, which should further deteriorate the strength of both Scherals and tensile load.
  • the invention is also applicable to devices in which a die is used Stamp with multiple work surfaces, such as a double stamp, is assigned.
  • Stamp with multiple work surfaces such as a double stamp
  • the invention can also be implemented with matrices in which the support parts can be exchanged to adapt to different material qualities and / or material thicknesses.
  • a particularly simple embodiment of the device is obtained if the die has only two support parts with cutting edges that are parallel to one another.
  • this embodiment has the advantage that the alignment of the die and punch in the press used only has to be carried out with high accuracy in the direction perpendicular to the cutting edges, while the alignment across is less critical.
  • FIGS. 1 and 2 show the two possible relative positions of the punch and die at the beginning and at the end of the press stroke.
  • FIGS. 1 to 5 First, reference is made to FIGS. 1 to 5.
  • the die comprises a stationary anvil 10 supported on its underside in the press with an essentially elongated, rectangular plan; Fig. 1 shows the side view on the narrow side.
  • Support parts 12 extend along the broad sides of the anvil and can extend laterally (FIG. 2) and whose free edges facing the anvil are designed as cutting edges.
  • the plane defined by the two cutting edges is one dimension higher than the somewhat convexly curved working surface 16 of the anvil, which is smaller than the sum of the thickness of both sheets 18, 20, but greater than the thickness of the sheet 18 facing it.
  • the punch 22 has a working surface 24 which, as shown in FIG. 1, is clearly narrower than the distance between the two cutting edges of the die.
  • the cross section of the stamp increases so that it has the shape of a truncated pyramid with a rectangular base, the area penetrating into the sheets, the angle of inclination of the pyramid sides relative to the stamp axis being approximately 20 °; this corresponds to a tip angle of 40 °.
  • the extent to which the working surface 24 is narrower than the cutting edge distance depends on the thickness of the sheets, in particular on the thickness of the sheet 20 facing it, and is preferably dimensioned (for which a few attempts are sufficient) that this sheet 20 during joining is no longer cut.
  • the edge delimiting the working surface 24 is rounded, in the example with a radius of the order of 0.5 mm, and polished.
  • the side faces of the truncated pyramid-shaped stamp section are designated by 26.
  • the contour of the stamp on the sides extending perpendicular to the cutting edges is not shown in FIGS. 1 and 2, but can be seen in FIG. 9, which shows a stamp which is nothing more than a doubling of the stamp from FIGS. 1 and 2. It should be noted that here too the contour has approximately the same apex angle of the truncated pyramid as on the sides parallel to the cutting edge.
  • FIG. 1 shows the state before joining
  • Fig. 2 shows the result that is present at the end of the press stroke (it should be noted that either the press pressure or the press stroke is specified):
  • the sheet 18 has been cut along the cutting edges 14, which extend perpendicular to the plane of the drawing, by the interaction of the same with the stamp 22, and the web 30 which has remained between the cuts has been pushed through to the working surface 16 of the anvil.
  • the pressed-through area 32 of the sheet 20 which has not been cut, is extruded so that its material is plastically deformed behind the cut edges 34 with firm anchoring to them.
  • the pressed-through web 30 remains with its ends 36 hanging on the sheet metal, since an incision has been made there. 3 to 5 show the addition generated in this way.
  • FIGS. 6 to 8 Two parallel incisions were made in the sheet 18; the die and the stamp have a very simple, inexpensive to manufacture shape. If there are special requirements for the appearance of the joints an embodiment of the device, as indicated in FIGS. 6 to 8, may be preferred. These embodiments are only shown as a top view of the die.
  • the anvil 10 '(FIG. 6) or 10 "(FIG. 7) has the shape of a cylinder, and the support parts 12' or 12" have cutting edges which extend the sheet metal facing them along four (FIG. 6) or Cut three (Fig. 7) arcs with the same radius and common center. Between each of the incisions there remains a web, which has the function of the webs 36 from FIG. 3.
  • the working surface of the associated punches is indicated at 24 'or 24 "; the contour of these punches is then frustoconical with a tip angle of preferably 40 ° analogous to FIG. 1.
  • FIG. 8 In the embodiment according to FIG. 8, four supporting parts 12 "'are arranged around an anvil 10"', which has a square outline; the webs then remain in the corner area. It should be noted that under certain circumstances it is also possible to dispense with standing webs. This would result in a closed circular incision shape in FIGS. 6 and 7, in FIG. 8 a closed square incision shape, with the result that a plate with a corresponding outline would be punched out from the sheet metal facing the die. The appearance of the joint would be very similar to a rivet head, but care would have to be taken to ensure that the punched-out plate is ejected from the die after each operation.
  • the stamp according to FIG. 9 is designed as a double stamp, in that two stamps according to FIG. 1 are arranged side by side and are made in one piece. One can see the two working surfaces 24a, 24b and the respectively assigned flanks 28, which extend perpendicular to the cutting edges and also define an apex angle of 40 °.
  • the cutting edges of the associated die are simply designed to be correspondingly longer, so that two adjacent joints are produced with one press stroke.
  • the die comprises a base 118 with a flat support surface 120 parallel to a press table (not shown) and a flat clamping surface 122 extending perpendicular thereto.
  • a threaded bore 124 is machined into the base perpendicular to the clamping surface 122.
  • the support members 126, 128 and anvil 130 are separately manufactured components.
  • the anvil 130 is a steel stamped part, and the support parts are stamped and in the area of their cutting edges 132, both on their side facing the anvil and on its side facing away from them, the support parts are provided with a cutting edge, specially hardened or hard-coated and ground.
  • the anvil and support parts have through holes which are aligned with the threaded bore 124 in the assembled state, the forces acting on the joining being transmitted to the base in that the support parts and anvil are supported on the support surface 120.
  • a clamping disk 134 is provided, likewise provided with an aligned through hole.
  • the entire assembly is held together by a clamping screw 136.
  • the clamping screw is not yet tightened so that you can see that it is convexly curved outwards and thus acts as a spring washer. With its lower edge, it also lies on the support surface 120.
  • This embodiment has the advantage that the support parts can first be turned over when their cutting edges wear and, if the second pair of cutting edges is blunt, can be replaced.
  • the anvil is also interchangeable. Experience has shown that there is no wear on the anvil, but this enables the joining of sheets of different thickness, which in turn requires a change in the distance between the cutting edges 132 and the anvil working surface 138.
  • the upper edge 140 of the clamping washer is at the same height as the upper edge 142 of the clamping surface 122, so that the same clamping conditions are present for both support parts.
  • the support parts have a contour with lateral cutouts, so that the bending stress during lateral rebound is distributed as uniformly as possible over the length of the support parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Connection Of Plates (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (2)

1. Procédé pour réaliser des liaisons de tôles selon lequel on réunit entre elles deux tôles (18, 20) disposées à plat l'une sur l'autre, par découpage, enfoncement du matériau des tôles et refoulement du matériau enfoncé en arrière des découpes, et selon lequel seule l'une des tôles (18) comporte des découpes et le matériau enfoncé est refoulé sur le côté de la tôle découpée, tourné à l'opposé de l'autre tôle (20), entre une partie formant enclume (10) et un poinçon (22, 28), caractérisé en ce qu'on aménage au moins deux découpes situées à des premières distances réciproques prédéterminées, à l'aide du poinçon (22, 28) en coopération avec des lames de coupe (12, 14), qui sont disposées latéralement par rapport à la partie formant enclume (10), font saillie au-dessus de la surface de travail de cette partie formant enclume et sont à même de fléchir élastiquement vers l'extérieur par rapport à la partie formant enclume (10), et comporte, au niveau de leurs extrémités libres, des tranchants (14), en ce que les limites du poinçon, qui sont tournées vers les lames de coupe (12, 14), sont séparées par des secondes distances prédéterminées qui, conformément à l'épaisseur de la tôle (20) qui ne doit pas être découpée, sont inférieures aux premières distances, et en ce qu'on laisse les lames de coupe (12, 14) s'écarter latéralement pendant l'opération de refoulement, grâce à quoi la liaison est établie au moyen d'une seule course de la presse.
2. Procédé pour réaliser des liaisons de tôles selon la revendication 1, caractérisé en ce qu'on aménage deux découpes rectilignes parallèles entre elles dans une tôle (18).
EP85102777A 1984-03-22 1985-03-12 Procédé pour réaliser des liaisons de tôles Expired - Lifetime EP0155619B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85102777T ATE49521T1 (de) 1984-03-22 1985-03-12 Durchsetzfuegeverfahren.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE8408793U 1984-03-22
DE8408792U 1984-03-22
DE19848408792 DE8408792U1 (de) 1984-03-22 1984-03-22 Vorrichtung zum Verbinden flächig aufeinanderliegender Bleche mittels Durchdrücken und Fließverpressen
DE19848408793 DE8408793U1 (de) 1984-03-22 1984-03-22 Vorrichtung zum Verbinden flächig aufeinanderliegender Bleche

Publications (3)

Publication Number Publication Date
EP0155619A2 EP0155619A2 (fr) 1985-09-25
EP0155619A3 EP0155619A3 (en) 1987-01-21
EP0155619B1 true EP0155619B1 (fr) 1990-01-17

Family

ID=25949886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102777A Expired - Lifetime EP0155619B1 (fr) 1984-03-22 1985-03-12 Procédé pour réaliser des liaisons de tôles

Country Status (4)

Country Link
US (1) US4658502A (fr)
EP (1) EP0155619B1 (fr)
DE (1) DE3575386D1 (fr)
ES (1) ES285525Y (fr)

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DE102011122037A1 (de) * 2011-12-22 2013-06-27 Kathrein-Werke Kg Verfahren zur Herstellung einer elektrischen Hochfrequenz-Verbindung zwischen zwei Plattenabschnitten sowie eine zugehörige elektrische Hochfrequenz-Verbindung
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ITVR20130040A1 (it) 2013-02-14 2014-08-15 Giuseppe Cipriani Struttura metallica di supporto di un controsoffitto.
ITVR20130058A1 (it) 2013-03-08 2014-09-09 Giuseppe Cipriani Profilato di una struttura di supporto di un controsoffitto e procedimento di lavorazione per lavorare il profilato.
CN103801813B (zh) * 2014-01-17 2015-08-26 西安交通大学 基于逆变电阻焊与交流伺服直驱冲压板材的复合连接装置
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US4208776A (en) * 1977-09-15 1980-06-24 Schleicher Louis C Punch, die and anvil set
US4130922A (en) * 1977-11-07 1978-12-26 Akh Inc. Headless riveting system
DE2841937A1 (de) * 1978-09-27 1980-04-10 Hermann Hillmer Verfahren und vorrichtung zum verbinden zweier teile unterschiedlicher staerke durch stanznieten
US4306511A (en) * 1979-12-03 1981-12-22 Dofasco Inc. Apparatus for the fastening together of sheet materials
US4459735A (en) * 1980-09-08 1984-07-17 Btm Corporation Joining sheet metal
GB2104430B (en) * 1981-08-24 1985-05-09 Gillette Co Securing a razor blade to a support
DE3261709D1 (en) * 1981-10-28 1985-02-07 Eckold Vorrichtung Apparatus for making a riveted joint of metal sheets

Also Published As

Publication number Publication date
ES285525U (es) 1985-11-01
ES285525Y (es) 1987-02-16
EP0155619A3 (en) 1987-01-21
US4658502A (en) 1987-04-21
DE3575386D1 (de) 1990-02-22
EP0155619A2 (fr) 1985-09-25

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