EP0739663A2 - Machine pour former des pièces - Google Patents

Machine pour former des pièces Download PDF

Info

Publication number
EP0739663A2
EP0739663A2 EP96104110A EP96104110A EP0739663A2 EP 0739663 A2 EP0739663 A2 EP 0739663A2 EP 96104110 A EP96104110 A EP 96104110A EP 96104110 A EP96104110 A EP 96104110A EP 0739663 A2 EP0739663 A2 EP 0739663A2
Authority
EP
European Patent Office
Prior art keywords
pressure element
workpiece
counter
processing machine
machine according
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.)
Granted
Application number
EP96104110A
Other languages
German (de)
English (en)
Other versions
EP0739663B1 (fr
EP0739663A3 (fr
Inventor
Hans Dipl.-Ing. Klingel (Fh)
Werner Dipl.-Ing. Erlenmaier
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.)
Trumpf SE and Co KG
Original Assignee
Trumpf SE and Co KG
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 Trumpf SE and Co KG filed Critical Trumpf SE and Co KG
Publication of EP0739663A2 publication Critical patent/EP0739663A2/fr
Publication of EP0739663A3 publication Critical patent/EP0739663A3/fr
Application granted granted Critical
Publication of EP0739663B1 publication Critical patent/EP0739663B1/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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/06—Stamping using rigid devices or tools having relatively-movable die parts
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/04—Stamping using rigid devices or tools for dimpling

Definitions

  • the invention relates to a processing machine, in particular for forming workpieces, preferably sheet metal, with a tool comprising two tool halves arranged on opposite sides of the workpiece to be machined, one of the tool halves having at least one pressure element which can be moved against the workpiece and acts on the workpiece and at least the other tool half has a counter-pressure element cooperating with the pressure element for machining the workpiece.
  • Processing machines of this type are used to carry out a large number of processing measures.
  • generic presses for forming metal sheets are known, on which one half of the tool is provided with a pressure element in the form of a press die, which hydraulically drives the one to be machined Presses the workpiece into a stationary die, which acts as a counter-pressure element, of the second tool half.
  • the punch penetrates the resting die with a defined depth.
  • the relative movement between the stamp and the workpiece support on the die of the processing machine required for the deformation of the workpiece is based solely on the movement of the stamp. Accordingly, the punch disadvantageously has to cover a relatively long travel path both when entering the die and during its return stroke. The individual machining process takes a corresponding amount of time.
  • the object of the invention is to provide a processing machine, in particular for forming workpieces, which enables accelerated workpiece processing.
  • this object is achieved in that the back pressure element is guided and driven against the workpiece on processing machines of the type mentioned above, and in that the pressure element moved against the workpiece drives the counter pressure element in the opposite direction of the pressure element via the workpiece and / or a workpiece support is effected.
  • the relative movement between the pressure element and the counter-pressure element required for machining the workpiece results on processing machines of this type as the result of the simultaneous and opposite movements of the pressure element and counter-pressure element.
  • the amount of the workpiece movement can be kept small by a corresponding drive configuration. This circumstance is particularly important if the workpiece is clamped on the machine during its processing and, as a result, can only be deflected slightly in the direction of the axis of movement of the pressure element and counter-pressure element without undesired deformation.
  • the movement of the counter-pressure element opposite to the movement of the pressure element can be triggered or controlled in different ways.
  • the counter-pressure element can be moved by means of its own drive, which is switched on when the workpiece moved with the pressure element or the workpiece area acted upon by the moved pressure element actuates a corresponding switching device.
  • a separate drive motor for the counter-pressure element can also be used without involving the workpiece or the workpiece support be started.
  • the latter alternative is not the subject of the present invention.
  • the counterpressure element can be moved in the opposite direction of the pressure element by means of a deflection mechanism actuated by the moving pressure element over the workpiece and / or over the workpiece support.
  • the movement of the pressure element and the movement of the counter-pressure element in the opposite direction can advantageously be realized with a single drive motor.
  • the deflecting gear has at least one piston-cylinder unit, which is acted upon by the moving pressure element via the workpiece, as a source for a pressure medium, which is in drive connection with the counter-pressure element.
  • the deflection gear has at least one hydraulic or at least one pneumatic piston-cylinder unit which is acted upon by the moving pressure element.
  • An embodiment of the processing machine according to the invention is distinguished by a structurally simple, robust and low-maintenance transmission solution, in which the deflection transmission is a mechanical one Gear is formed.
  • the mechanical transmission can have at least one transmission lever and / or at least one transmission wedge.
  • a rocker-type gear lever is used which can be acted upon by the pressure element on one side of its swivel joint and supports the counter-pressure element to be displaced on the other side of its swivel joint.
  • deflection gears are also provided according to the invention, on which the above-mentioned gear parts are used in combination.
  • a piston-cylinder unit can be in drive connection via pressure lines with transmission levers and / or with transmission wedges.
  • a further preferred embodiment of the processing machine according to the invention is characterized in that at least one longitudinal slide, which can be displaced in the same direction by the pressure element moved against the workpiece, is guided on the tool half of the counterpressure element and is tapered in a wedge shape toward its end facing away from the workpiece, forming at least one wedge surface, and is supported with the wedge surface on a corresponding mating wedge surface of a cross slide which is displaceable in the transverse direction of the longitudinal slide and that the cross slide is also tapered wedge-shaped towards its end facing away from the longitudinal slide and forms a wedge surface with this wedge surface on a corresponding one connected to the counter pressure element supports this intended counter-wedge surface.
  • the base plate which runs perpendicular to its direction of movement, is provided with window-like recesses and is inserted with the base plate into a corresponding pot-like receptacle of the relevant tool half, wherein in each of the window-like recesses a cross slide, supported by one of its wedge surfaces on a counter-wedge surface of the base plate, is displaceable in the direction of the base plate plane is led.
  • the end face of the base plate which runs parallel to the direction of movement of the counterpressure element, in cooperation with the wall surface of the pot-like receptacle lying thereon, ensures a defined position of the counterpressure element transversely to its direction of movement and for exact guidance of the counterpressure element displaced in the direction of movement.
  • the counter-pressure element which moves in the opposite direction of the printing element and cooperates with the latter for material processing returns to its starting position after the processing operation has ended.
  • this return movement can take place under the effect of the dead weight of the back pressure element.
  • the counter pressure element can be moved against the spring force in the direction of the workpiece.
  • the spring force acts as a restoring force and ensures that the counter-pressure element is actively moved back to its starting position after the completion of each machining process.
  • the base plate is supported in the direction of the workpiece on a spring-elastic rubber buffer.
  • the rubber buffer is a component that can function even after a large number of load cycles. If the rubber buffer is ring-shaped and, for example, is placed concentrically with the counter-pressure element on the base plate, this results in a resilient support that is uniform over its circumference. Accordingly, the restoring force exerted by the rubber buffer on the base plate and the counterpressure element attached to it also acts uniformly in the transverse direction of the base plate plane. Tilting movements and / or tilting of the base plate, which has been moved back into the starting position, against the inner wall of the pot-like receptacle are avoided.
  • a further advantageous embodiment of the invention provides that the counter-pressure element is detachably connected to the thrust piece, optionally to the base plate. If necessary, replace the counter-pressure element without any problems, while the other components of the deflection gear or the other parts of the relevant tool half can also be used to carry out the workpiece machining to be carried out after the machine has been converted.
  • a tool half 1 of the forming tool shown comprises a base part 2 and a cover part 3 screwed thereto.
  • a counter pressure element in the form of a stamp 4 guided in the direction of a double arrow 5.
  • the stamp 4 is fixed in a neck-like extension 6 of a base plate 7 serving as a thrust piece. It supports the punch 4 in the axial direction on the one hand over the outer surface of a conical outer collar 8 on a corresponding counter surface of the neck-like extension 6.
  • the plunger 4 rests on a threaded piece 9, which can be screwed with an external thread from the side of the conical outer collar 8 into an internally threaded bore of the socket-like extension 6.
  • the bottom part 2 of the tool half 1 offers in its interior a pot-like receptacle 10 for the base plate 7 with the stamp 4 attached to it.
  • An annular rubber buffer 11 is concentric with the stamp 4 and under slight prestress in the direction of the double arrow 5 between the base plate 7 and the Cover part 3 of tool half 1 inserted.
  • Three window-like recesses 12 are provided on the base plate 7 by 120 ° relative to one another in the circumferential direction.
  • a cross slide 13 in the form of a double wedge is displaceably guided in the direction of the double arrow 14. With their base areas, the cross slide 13 is supported on the bottom of the pot-like receptacle 10 of the base part 2.
  • Wedge surfaces 15 of cross slide 13 facing stamp 4 abut corresponding counter wedge surfaces 16 of base plate 7.
  • the cross slides 13 each have a counter wedge surface 17 which is in contact with a wedge surface 18 of a longitudinal slide 19.
  • the longitudinal slide 19 has a cylindrical part at its end facing the bottom of the pot-like receptacle 10 three approaches are provided.
  • the cylindrical longitudinal slide 19 is guided in the direction of the double arrow 5 by a guide surface 20 of the cover part 3 which is concentric with it.
  • the longitudinal slide 19 offers a support surface 21 for a workpiece shown in dashed lines in FIGS. 1 and 2 in the form of a pre-perforated plate 22.
  • a second tool half 23 in Form of a die serving as a pressure element with an annular opening 24 assigned to the punch 4.
  • the plate 22 itself is displaced in the direction of the movement axis of the die 23 and the punch 4 over a short path length.
  • the length of the displacement path of the sheet metal 22 is limited to the projection of the longitudinal slide 19 shown in FIG. 1 with respect to the area on the upper side of the cover part 3 surrounding it.
  • the lifting movement of the base plate 7 is associated with a compression of the rubber buffer 11.
  • the base plate 7 is pushed back into the starting position according to FIG. 1 under the action of the restoring force exerted by the rubber buffer 11. This is associated with a displacement of the cross slide 13 radially outwards and, as a result, a lifting of the longitudinal slide 19 into the starting position according to FIG. 1.
  • the sheet 22 is stripped from the punch 4 in the area of the passage now created.
  • die 23 and the stamp 4 with the other parts of the relevant tool half 1 can be used in the tool holders on a punching machine.
  • the die 23 can be fixed on the ram of the punching machine and the tool half 1 with the punch 4 in the tool holder that is otherwise intended for receiving the punching lower tool.
  • a punching machine can be quickly and easily converted into a processing machine for forming workpieces.
  • the sheet to be machined can be quickly and precisely aligned in the respective machining position and moved into the next machining position by means of the workpiece feed provided on punching machines, so that high machining speeds can be achieved.
  • the punch 4 can be exchanged with little effort to adapt to changing sheet thicknesses and / or to changing diameters of the sheet metal pre-perforation. Since the die 23 with its ring opening 24 is generally matched to the dimensions of the die 4 used in each case, as a rule, when the die 4 is changed, a matrix change is accompanied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Punching Or Piercing (AREA)
EP96104110A 1995-04-24 1996-03-14 Machine pour former des pièces Expired - Lifetime EP0739663B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29506877U DE29506877U1 (de) 1995-04-24 1995-04-24 Bearbeitungsmaschine insbesondere zum Umformen von Werkstücken
DE29506877U 1995-04-24

Publications (3)

Publication Number Publication Date
EP0739663A2 true EP0739663A2 (fr) 1996-10-30
EP0739663A3 EP0739663A3 (fr) 1997-08-27
EP0739663B1 EP0739663B1 (fr) 2000-05-24

Family

ID=8007217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104110A Expired - Lifetime EP0739663B1 (fr) 1995-04-24 1996-03-14 Machine pour former des pièces

Country Status (4)

Country Link
US (1) US5778721A (fr)
EP (1) EP0739663B1 (fr)
JP (1) JPH08323432A (fr)
DE (2) DE29506877U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0888833A1 (fr) * 1997-07-04 1999-01-07 Humard Automation SA Procédé et presse d'étampage différentiel et/ou sèquentiel selon au moins deux directions différentes
CN103286189A (zh) * 2013-06-07 2013-09-11 无锡微研有限公司 模具侧向切边机构
CN103990708A (zh) * 2014-06-05 2014-08-20 昆山电子羽电业制品有限公司 一种凸包冲压模具
CN103990706A (zh) * 2014-06-05 2014-08-20 昆山电子羽电业制品有限公司 一种显示器背板凸包的冲压模具

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040065135A1 (en) * 2002-10-04 2004-04-08 Peterhansel Carl R. Expandable forming tool
DE102005036775B4 (de) * 2004-08-09 2007-01-25 Schuler Pressen Gmbh & Co. Kg Umformeinrichtung mit Auswerfer und Verfahren zum Auswerfen von Werkstücken
US7793530B2 (en) * 2007-06-01 2010-09-14 Wilson Tool International Inc. Durable enlarged forming tool technology
CN101693339B (zh) * 2009-10-16 2011-05-11 苏州轴承厂有限公司 平面推力轴承保持架的生产方法及其专用模具
CN101767148B (zh) * 2009-12-30 2012-05-23 吉林省元隆达工装设备有限公司 向上折边斜楔机构
CN105328020B (zh) * 2014-08-13 2017-09-29 中国航发常州兰翔机械有限责任公司 火焰筒内前圈用冲压成型工装及其工作方法
CN105328038A (zh) * 2015-11-26 2016-02-17 沈阳黎明航空发动机(集团)有限责任公司 一种胀型模具及其使用方法
CN108213181A (zh) * 2017-12-29 2018-06-29 东莞市天合机电开发有限公司 一种模具方便更换的数字相机底板凹孔冲孔机构
JP6788310B1 (ja) * 2020-06-09 2020-11-25 惇 市村 パンチ用ウレタンクッション
DE102020007893B3 (de) 2020-12-23 2022-06-15 Fritz Stepper GmbH & Co. KG. Bearbeitungsmodul für ein Bearbeitungswerkzeug einer Werkzeugmaschine, Bearbeitungswerkzeug und Werkzeugmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124954A (en) * 1982-07-31 1984-02-29 Behrens Ag C Apparatus for making drawn holes in workpieces on a piercing press
FR2566293A1 (fr) * 1984-06-22 1985-12-27 Atelier Meca Bureau Etu Luconn Outil de poinconnage, en particulier outil de soyage, a poincon agissant de bas en haut
US5005396A (en) * 1988-10-05 1991-04-09 Sollac Method and device for forming a sheet-metal blank in particular for making a cathode tube mask, and cathode tube mask obtained according to this method
EP0572301A1 (fr) * 1992-05-27 1993-12-01 Isoform Dispositif d'emboutissage de matériaux en feuille sur une matrice de formage en matériau élastique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3503630A (en) * 1966-08-01 1970-03-31 Frank J Thomas Angular die set for changing the direction of the tool pressure stroke in a punch press

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124954A (en) * 1982-07-31 1984-02-29 Behrens Ag C Apparatus for making drawn holes in workpieces on a piercing press
FR2566293A1 (fr) * 1984-06-22 1985-12-27 Atelier Meca Bureau Etu Luconn Outil de poinconnage, en particulier outil de soyage, a poincon agissant de bas en haut
US5005396A (en) * 1988-10-05 1991-04-09 Sollac Method and device for forming a sheet-metal blank in particular for making a cathode tube mask, and cathode tube mask obtained according to this method
EP0572301A1 (fr) * 1992-05-27 1993-12-01 Isoform Dispositif d'emboutissage de matériaux en feuille sur une matrice de formage en matériau élastique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0888833A1 (fr) * 1997-07-04 1999-01-07 Humard Automation SA Procédé et presse d'étampage différentiel et/ou sèquentiel selon au moins deux directions différentes
CN103286189A (zh) * 2013-06-07 2013-09-11 无锡微研有限公司 模具侧向切边机构
CN103990708A (zh) * 2014-06-05 2014-08-20 昆山电子羽电业制品有限公司 一种凸包冲压模具
CN103990706A (zh) * 2014-06-05 2014-08-20 昆山电子羽电业制品有限公司 一种显示器背板凸包的冲压模具
CN103990706B (zh) * 2014-06-05 2016-01-20 昆山电子羽电业制品有限公司 一种显示器背板凸包的冲压模具
CN103990708B (zh) * 2014-06-05 2016-04-13 昆山电子羽电业制品有限公司 一种凸包冲压模具

Also Published As

Publication number Publication date
EP0739663B1 (fr) 2000-05-24
DE59605281D1 (de) 2000-06-29
EP0739663A3 (fr) 1997-08-27
JPH08323432A (ja) 1996-12-10
DE29506877U1 (de) 1995-06-22
US5778721A (en) 1998-07-14

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