Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B1/00—Presses, 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
  • B30B1/40—Presses, 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 wedge means
• • 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
  • B21D19/00—Flanging or other edge treatment, e.g. of tubes
  • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
  • B21D19/082—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles
  • B21D19/084—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles with linear cams, e.g. aerial cams

Definitions

• the invention relates to a wedge drive with a slide element receptacle, a movable slide element and a driver element, wherein sliding surfaces between slide element and driver element are provided.
• a wedge drive also referred to as a slide, basically serves to deflect pressing forces into punching or forming tools, in order to be able to cut, punch or deform them by means of these, in particular, oblique or backward sections of body parts.
• the wedge drive comprises at least one slide element receptacle, a movable slide element and a driver element.
• the as such rigid slide element receptacle is usually connected to a part of the press or of the press tool in which or in which the wedge drive is to perform the punching or forming work.
• a top slider is called a wedge drive, when the slider element receptacle is secured in the upper part of the press tool connected to the moving press ram.
• a lower part pusher is used when its pusher element receptacle is connected to the lower press tool fastened to the rigid press table.
• Slider element recording of the wedge drive is connected, this usually has a linear guide in which the movable slide element can reciprocate, as such, however, is firmly connected to the slider element receptacle.
• the driver element is usually connected as a rigid element fixed to the part of the press tool on which the
• Slider element holder is not attached.
• the driver element usually has wedge slopes and serves with these with respect to the movable slide element as a drive element.
• a working stroke which is in its rearward position slider element on the rigidly standing driver element and is supported by this advancing over its pointing in the direction of skew (wedge shape).
• the inclination of the linear guide is the Slider element recording matched to the inclination of the driver element, so that there is no acceleration of the movable slide element with respect to the actual press speed.
• the movable slide element is thus driven only driven by the press tool and controlled forward or outward to perform the punching or forming work can.
• the movable slide element When the rear hub, in which the press tool has exceeded its bottom dead center and its two parts move apart again, usually the movable slide element is pushed back by means of a suitably designed resilient element to its original position, after which the process can be restarted.
• the retraction force required for retrieving the slider element is usually between 2 and 10% of the actual working force and the weight of the slider element. Determining the size of the press force here are the dimensions of the pressure-transmitting surfaces, which are referred to as sliding surfaces, the respective inclinations of linear guide in the slider element recording and inclination of the driver element and the interaction of the surfaces and inclinations and the structure of the slider element itself transmitted pressures are usually between less than 100 kN up to several 10 000 kN.
• the linear guide in the slide element holder should guide the movable slide element as free of play and endure high press forces and realize long service life.
• a tolerance of the running accuracy of the movable slide element of a maximum of 0.02 mm is required. If this tolerance is not met, the trimmed or perforated or otherwise reshaped workpieces can no longer be precisely placed on each other so that it comes to disturbances in the body shell and / or due to rubbing together workpieces for faster corrosion, reduced strength of the body and optionally an increased noise due to dissolving sheet metal parts.
• a wedge drive extremely high running accuracies realized and permanently the Requests required pressing pressures or provides in relation to the punching or forming tool is required that a wedge drive extremely high running accuracies realized and permanently the Requests required pressing pressures or provides in relation to the punching or forming tool.
• slider guides with right-angle arranged driver elements and 9.gleitplatten and a screwed cover plate for holding the slide element are known.
• slide guides hold very large pressing pressures and side thrusts, but are very complicated and expensive to produce, since a high manual training effort to tune the leadership game between the elements is required.
• the entire slider weight plus the declining tightening forces act on the mounting screws of the cover plate and can overstress this very quickly.
• such a slide guide builds comparatively large and is therefore unsuitable for the construction of small slide.
• Another Schieber entrysart used includes at an angle of 45 ° inclined lateral sliding and cover plates. These are thus arranged approximately roof-shaped. This makes it possible to achieve a reduction in the width, since the cover strips and sliding plates are arranged one above the other and not next to each other. However, the required space is still very large, so that little sliders can hardly be realized. Furthermore, the tensile forces occurring adversely affect the fastening screws of the cover plates, resulting in a high process uncertainty.
• Another known construction comprises a slider guide with a driver plate and one or two column guides with bushings to hold the slider element laterally and against falling. Due to the use of a guide column with a driver plate, although only relatively small installation space is required and it can be a considerably more cost-effective production than in the above-mentioned solutions of the prior art can be achieved. However, the design of the pillar is not able to compensate for large lateral pressures. Furthermore, it can not carry heavy-weight slider elements, so that these slide elements produce less pressing forces and are susceptible to interference in the press operation.
• slide element guide is known, for example, from EP 1 035 965 B1.
• a clasping of the slider element guide is provided, wherein the driver element provides a prism guide and sliding elements are inserted between the driver element and slider element. Due to the created roof shape very high slide forces with small achievable space are possible, as well as a very accurate guide game, so that the wedge drive or the slide element guide is stable and durable.
• the preparation of the staple guide due to the required costly machining to achieve a precise fit quite expensive and thus costly.
• wedge drives are also known, for example, from EP 1 259 371 B1, DE 198 60 178 C1 and EP 1 197 319 B1.
• All of the above-described concepts of a wedge drive for a wedge drive comprise one or more slide plates for transmitting mostly high press pressures, as well as correspondingly formed holding elements for holding the slide element in its intended for this Guide.
• the slide plates serve to permanently transmit the working pressures exerted by the press tool from the slider element holder and the driver element into the movable slider element and thus to ensure the actual propulsion.
• the holding elements serve to linearly hold the slide element on the sliding plates of the slide element receiving, whereby they permanently ensure the required running accuracy and should compensate for any possible side thrusts occurring during the forming process or during the cutting or punching process.
• the present invention is based on the object to further develop a wedge drive according to the preamble of claim 1 such that a guide for the movable slide element is created, which allows an even better running accuracy than the solutions of the prior art, which optimally affects the applied pressing force the punching or forming movement converts the side thrusts even better than the prior art compensated and brings a longer service life for the wedge drive than has been possible with the solutions of the prior art. Furthermore, a lesser effort in the incorporation of the wedge drives should be required and a more economical production possible.
• the object is achieved for a wedge drive according to the preamble of claim 1, characterized in that between the slider element and the slider element receiving a dovetail-like or prism guide means is provided.
• a slide element for such a wedge drive the object is achieved in that the slide element has a dovetailed or prismatic shaped side.
• a wedge drive in which the movable slide element has a dovetailed or prismatic side, the slide element receptacle being designed as a corresponding counterpart, so that the slide element with its dovetailed or prismatic side engages in the slide element receptacle and can be guided and held therein.
• the dovetail or Prismenform provided surfaces on the slide element and / or slide element recording are based on each other, which can be done without any problems due to the angled surfaces to each other in the dovetail or prismatic shape forces directed in different directions. Due to the dovetail shape, the movable slide element is secured after insertion into the correspondingly shaped receiving the slide element holder without further measures against falling out or lateral displacement.
• the dovetail-like or prism guide device comprises at least two sliding plates arranged at an angle to one another.
• the sliding plates of the dovetail-like or prism guiding device can advantageously be L-shaped in cross-section.
• the cross-sectionally L-shaped or roof-shaped sliding plates can be advantageously arranged so that their inner narrow sides result in a backlash in the form of the already mentioned dovetail guide due to the outwardly inclined inclination of the sliding plates.
• the dovetail-like or prism guiding device comprises a positive connection between the slide element and the slide element receptacle. Due to the provision of such a positive connection creates a compact unit through which even high pressing forces can be easily transferred. Furthermore, this unintentional slipping of slider element and slider element receiving is prevented, since by the positive engagement in the dovetail or prism guide and the mechanical contact between the two components to be joined of the slider element and the slider element recording the forces to be transmitted on the touching surfaces, the in an angle to each other, are transmitted and thereby support the cohesion of the components due to their angular position.
• the slide element receiving is formed cantilevered in the region of the sliding surfaces and / or the inclusion of the sliding plates. As a result, a larger surface for the sliding of
• the sliding plates can advantageously be releasably secured to the slider element receptacle and / or the slider element, in particular by fastening screws. Due to the solubility of the sliding plates of the slider element receiving or the slider element is an exchange of these possible during wear. Basically, it would of course also be possible, the corresponding sliding surfaces of
• Slider element recording and the slider element equip so that they can slide on each other without interposition of sliding plates.
• an exchange of slide element receptacle and slider element itself would be required, so that it is cheaper and in the Operation proves easier to handle when releasable sliding plates are provided, since then their replacement is also easily and quickly possible.
• the dovetailed or prismatic shaped side of the slide element advantageously has bearing surfaces as sliding surfaces, in particular for the attachment of sliding plates. It proves to be particularly advantageous in each case to provide two sliding plates arranged at an angle to one another, since here a cumbersome adjustment of four individual sliding plates, which are arranged at an angle to one another, can be avoided. It must only be done on each of the bearing surfaces for each sliding plate an adjustment, so that a quick change of sliding plates is possible.
• a wedge guide device is advantageously provided. As a result, very high forces can be absorbed in a relatively small space, at the same time an accurate and stable guidance of the slider element on the driver element in its movement is possible.
• the wedge guide device advantageously comprises two sliding plates arranged at an angle to one another.
• These sliding plates are advantageously made of a material that supports the sliding, in particular of bronze with a solid lubricant.
• the dovetail-like or prism guide means and the wedge guide means are provided at an angle to each other on the slider element. Due to the multiple angled arrangement to each other in particular the size of the wedge drive can be reduced, so that a compact unit is created, which can be used even in confined spaces within a press tool. As it proves to be further advantageous if the dovetail-like or prism guide means and the wedge guide means are provided on two mutually adjacent sides of the slide element. As a result, the running accuracy can be improved, but at the same time primarily the size can be reduced compared to the solutions of the prior art, which is usually provided on two opposite sides of the slider element engaging on a driver element and engaging the slider element receptacle.
• the slider element may have a third side adjacent to the other two sides with a receiving device for receiving a machining tool.
• the third side advantageously has at least two undercuts and / or grooves for inserting projecting elements of a receiving device for receiving a processing tool.
• the receiving device can be inserted there, for example, by insertion, not even a further fastening is required, since in particular due to undercuts by the thus created positive engagement of the compound already an optimal power transmission is ensured.
• the third side of the slider element may also be provided with at least one wedge surface, wherein the receiving device then preferably has a corresponding wedge surface to a form-fitting Provide connection between the slide element and receiving device for the machining tool. This lateral shear forces can be intercepted and the power transmission can be optimized.
• the function of a wedge drive usually includes the power stroke and the reset.
• the slider element is moved outwardly between the wedge-shaped sliding surfaces of the driver element and the slider element receiver, whereby the slider element receiver and the driver element are driven perpendicular to one another by the press stroke.
• the pressing force applied by the press tool in this case corresponds to the counterforce applied by the wedge drive for the work done by it, for example, trimming, punching or reshaping of a body part, which is divided depending on the respective angular position of the individual sliding surfaces to each other on the sliding surfaces.
• the movable slide element By providing arranged at an angle to each other sliding surfaces, which are arranged in a roof shape or prism shape to each other, the movable slide element centered by itself between the slide element receiving and driving element or on the sliding surfaces. In this way, a very high running accuracy and lateral guidance for the slide element can be created, whereby manufacturing tolerances or other production-related inaccuracies can be compensated and thus exert no negative influence.
• Slider element receptacle is removed from the driver element, the slider element is retracted in the area between the slider element receiving and driver element. Due to the dovetail shape of the guide between slide element holder and slide element, in turn, a self-centering linear guide is made possible for the slide element.
• the forces acting on the slider element forces are at the rear stroke or the provision only by the weight of this and the moving apart of the press tool on the on the slider element receiving, slide element and driver element restricting withdrawal forces.
• the successive sliding surfaces of slide element and slide guide element can be reduced in their dimensions relative to the sliding surfaces which run on each other during the working stroke, so that the above-mentioned L-shape of the sliding surfaces on the dovetail guide proves to be very suitable.
• the weight of the slide element acts on the surfaces of the slide element receptacle lying positively against its sliding surfaces of the dovetail guide and exerts an outwardly directed spreading force on it. Due to the positive Abschult für of the slider element relative to the slider element receiving these lateral thrust forces are compensated, however, so that a permanent and stable attachment of the slider element to the slider element receiving and the sliding plates on the slider element and slider element holder is possible. On the mounting screws of the sliding plates thus do not affect these damaging forces, in particular tensile forces.
• Figure 1 is a vertical cross-sectional view of a first embodiment of a wedge drive according to the invention with dovetail-like
• Figure 2 is a perspective view of the slider element receptacle
• FIG. 3 is an exploded perspective view of FIG.
• Figure 4 is a perspective view of a second embodiment of a wedge drive according to the invention with dovetail-like
• FIG. 5 shows a perspective view of the wedge drive according to FIG. 4 without driver element
• FIG. 6 shows a perspective side view of the wedge drive according to FIG. 4,
• FIG. 7 shows a lateral plan view of the wedge drive according to FIG. 4
• FIG. 8 shows a lateral sectional view of the wedge drive according to FIG. 4,
• FIG. 9 shows a perspective view obliquely from above of the wedge drive according to FIG. 4 with the holding device inserted for one
• FIG. 10 shows a perspective view of the wedge drive provided with a receiving device for the machining tool according to FIG. 9 with the driver element removed, and FIG
• Figure 11 is a perspective view of the wedge drive of Figure 10 with removed receiving device for a machining tool and removed driver element.
• FIG. 1 shows a sectional view of a wedge drive 1 with a slider element holder 2, a slider element 3 and a receiving device 4 for receiving a machining tool.
• a driver element connected to the slide element 3 can not be seen in this illustration, but can be seen from the perspective view in FIG.
• the slide element 3 has a dovetail-shaped section 30. This comprises two on both sides in each case two mutually angled sliding surfaces 31, 32, 33, 34.
• the two sliding surfaces 31 and 33 are smaller than the two sliding surfaces 32 and 34. This is due to the fact that in a working stroke of a Pressing tool in which the wedge drive is arranged, exerted pressing forces of the slider element receiving the slider element via the sliding surfaces 32, 34 are transmitted. In a retreat or a rearward stroke of the press tool retraction of the slider element via the two sliding surfaces 31, 33, wherein a very much lower force is exerted on the slider element, so that these smaller dimensions of the sliding surfaces are sufficient.
• the slider element receptacle 2 also has a correspondingly shaped section 20, which comprises corresponding sliding surfaces 21 to 24, which rest in each case in a form-fitting manner on the sliding surfaces 31 to 34. Further, the dovetail-shaped portion 30 engages with a projecting portion 35 in a corresponding recess 25 a form-fitting manner in the slider element receptacle 2 a.
• the projecting portion 35 can extend only over a partial region of the longitudinal extension of the slide element or slide element receptacle.
• sliding plates are provided on the slider element receptacle and slider element in order to form the corresponding sliding surfaces 21 to 24 and 31 to 34, respectively.
• the slide plates 26, 27 on the slide element holder 2 are L-shaped in cross section, whereas individual flat slide plates 36, 37, 38, 39 are provided on the corresponding surfaces of the slide element, which can be better seen in FIG.
• the L-shaped sliding plates 26, 27 are secured by fastening screws 28, 29 to the slider element receptacle.
• the sliding plates 36 to 39 are secured by corresponding fastening screws on the slider element, but these are not shown in Figure 1.
• the slide element receptacle projects outward in the region of the dovetail-like guide device in order to create a sufficiently large sliding surface 22, 24 for supporting and sliding on the slide element 3.
• the receiving device 4 for receiving a machining tool with a T-shaped projection 40 and the slider element 3 is provided with a corresponding T-slot 41.
• the receiving device for the machining tool can be inserted in a simple manner in the T-slot 41, whereby a simple attachment and a secure hold on the slider element is possible.
• a wedge shape with corresponding grooves and protrusions may be provided in this area, so that in addition a centering and recording of lateral thrust forces in this area is possible.
• provision of the T-groove and the T-shaped projection is sufficient in most cases.
• FIG. 2 shows a perspective view of the details of the slider element receptacle and of the slider element obliquely from below. Both are shown individually, so that a view of the sliding plates 26, 27 of the slider element receptacle 2 and the dovetail-like portion 20 of the slider element receptacle is possible. Furthermore, the dovetail-shaped portion 30 of the slider element is clearly visible, also attached to this slide plates, with their attachment is indicated by screws. As better shown in the perspective exploded view in Figure 3, the respective sliding plates are fixed by three fastening screws on the slider element receiving or the slider element. The sliding plates have corresponding holes for receiving the mounting screws. FIGS. 2 and 3 also show a wedge-shaped receiving surface 300 for connection to the driver element 5, which can be seen in FIG.
• the wedge-shaped receiving surface 300 is divided into two and has two sliding surfaces 301, 302, on each of which slide plates are placed, which, however, can not be seen in FIGS. 2 and 3.
• the wedge-shaped receiving surface 300 is at both the dovetail-shaped portion 30 and the side with the T-shaped groove 41 for receiving the receiving device for the machining tool at an angle, so that an extremely compact design for the slide element is formed, substantially unused
• FIG. 5 shows that the forced return clips 7 have protruding sections 70 for this purpose, which can engage in corresponding grooves in the driver element. Furthermore, FIG. 5 shows that slide plates 303, 304 are attached to the sliding surfaces 301, 302 via fastening screws 305.
• the perspective view, rotated by 90 ° relative to the view in FIG. 4, of the wedge drive 1 in FIG. 6 shows a view of the receiving device 4 for receiving a machining tool.
• the receiving device 4 is provided with a corresponding wedge surface 42, consisting of two sliding surfaces 43, 44, which can slide on a corresponding wedge portion 50 of the driver element 5.
• the lateral view of the wedge drive 1 according to FIG. 7 can be better taken again that the dovetail-shaped section 30, the wedge-shaped receiving surface 300 and the third side with the T-shaped groove 41 for receiving the receiving device 4 for the machining tool of the slide element 3 respectively are arranged at an angle to each other.
• Each of the sides of the slider element is also at an angle to the vertical or horizontal, which are indicated by dashed lines 8, 9 in Figure 7.
• the extremely compact design of the wedge drive can be clearly taken.
• the corresponding lateral sectional view of the wedge drive 1 according to FIG. 8 additionally shows a spring element 10 in the form of a gas pressure spring.
• a spring element 10 in the form of a gas pressure spring. This serves to retract the slide element at the rearward stroke of the press tool back to its original position. As a result, the retraction of the slider element is facilitated at the rear hub, so that faster again a working stroke can be done.
• a spring element in particular when providing specially trained Zwangsgurhol- devices in the form of Zwangsgurholklammem 7, for example in the form of forced return devices with Rollreibungs instituten.
• the perspective view of the wedge drive 1 from below with removed driver element 5 according to Figure 10 can be seen that the sliding plates 303, 304 can be formed so long that they also engage the sliding surfaces 43, 44 of the wedge surface 42 of the receiving device 4 for the machining tool, So here no more sliding plates are provided, but only the sliding plates 303, 304, so that a uniform surface for cooperation with the corresponding wedge portion 50 of the driver element 5 is provided.
• FIG. 11 The perspective view of the wedge drive 1 from above in accordance with FIG. 11 shows the sliding plates 303, 304 once again with the receiving device for the machining tool removed. It will also be appreciated that a corresponding attachment to the machining tool receptacle is provided by providing a bore 305 in the slide plates 303, 304 and corresponding mounting bolt, which is not shown in FIG. 11, however. By means of this, the fastening of the receiving device 4 for the machining tool on the slide element can be further improved and an even more stable unit can be created.
• the aforementioned sliding plates on the slide element and the driver element as well as the slide element receptacle are preferably made of bronze with a solid lubricant, in order to allow a particularly good sliding of the corresponding sliding pairings on one another.
• other materials for the sliding plates can be used, a particularly optimal movement of the slide element within the wedge drive during the working stroke and rearward stroke of the press tool, in which the wedge drive is arranged, is possible by a low friction of the sliding surfaces.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Machine Tool Units (AREA)
• Mounting, Exchange, And Manufacturing Of Dies (AREA)
• Clamps And Clips (AREA)
• Bearings For Parts Moving Linearly (AREA)
• Connection Of Plates (AREA)
• Processing Of Stones Or Stones Resemblance Materials (AREA)

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Publications (1)

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• 2007
  • 2007-09-24 DE DE102007045703A patent/DE102007045703A1/de active Pending
• 2008
  • 2008-01-31 KR KR1020107006463A patent/KR101230185B1/ko active IP Right Grant
  • 2008-01-31 BR BRPI0817324-9A patent/BRPI0817324B1/pt active IP Right Grant
  • 2008-01-31 CA CA2700576A patent/CA2700576C/en not_active Expired - Fee Related
  • 2008-01-31 CN CN200880114991.9A patent/CN101848805B/zh active Active
  • 2008-01-31 RU RU2010114863/02A patent/RU2461463C2/ru not_active IP Right Cessation
  • 2008-01-31 PL PL08715674T patent/PL2197660T3/pl unknown
  • 2008-01-31 ES ES08715674.1T patent/ES2553582T3/es active Active
  • 2008-01-31 JP JP2010525212A patent/JP5230743B2/ja active Active
  • 2008-01-31 WO PCT/EP2008/000742 patent/WO2009039895A1/de active Application Filing
  • 2008-01-31 UA UAA201004864A patent/UA97863C2/ru unknown
  • 2008-01-31 EP EP08715674.1A patent/EP2197660B1/de active Active
  • 2008-01-31 MX MX2010003031A patent/MX2010003031A/es active IP Right Grant

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