EP0728540A2 - Procédé et outil pour le formage de tÔle - Google Patents

Procédé et outil pour le formage de tÔle Download PDF

Info

Publication number
EP0728540A2
EP0728540A2 EP96101769A EP96101769A EP0728540A2 EP 0728540 A2 EP0728540 A2 EP 0728540A2 EP 96101769 A EP96101769 A EP 96101769A EP 96101769 A EP96101769 A EP 96101769A EP 0728540 A2 EP0728540 A2 EP 0728540A2
Authority
EP
European Patent Office
Prior art keywords
tool
rack
rollers
form rollers
shaped
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
EP96101769A
Other languages
German (de)
English (en)
Other versions
EP0728540A3 (fr
EP0728540B1 (fr
Inventor
Hans-Peter Mansdörfer
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.)
Allgaier Werke GmbH and Co KG
Original Assignee
Allgaier Werke GmbH 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 Allgaier Werke GmbH and Co KG filed Critical Allgaier Werke GmbH and Co KG
Publication of EP0728540A2 publication Critical patent/EP0728540A2/fr
Publication of EP0728540A3 publication Critical patent/EP0728540A3/fr
Application granted granted Critical
Publication of EP0728540B1 publication Critical patent/EP0728540B1/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
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/28—Making other particular articles wheels or the like gear wheels
    • 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
    • B21D15/00—Corrugating tubes
    • B21D15/02—Corrugating tubes longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls

Definitions

  • the present invention relates to a method and a tool used to implement it, in order to provide a sheet metal part with a tooth-shaped or undulating profile.
  • Such molded parts with internal and external teeth are e.g. used in the form of outer disk carriers in vehicle transmissions. It is known from the prior art to preform thin-walled sheet metal parts first using conventional tools and then to tooth these parts in a next step using a cold rolling machine. In cold rolling, there is usually only a portion of the molded part in the engagement of the rollers. After the toothing in this section of the molded part has been completed, the molded part is displaced — in the case of round molded parts — to bring the next section into engagement with the rollers.
  • the present invention has for its object to provide a method to provide a molded part made of sheet metal with a tooth-shaped or undulating profile, which avoids these disadvantages.
  • Forming rollers are preferably used to form the tooth-shaped or wave-shaped profile.
  • the form rollers make it possible to produce sheet metal parts with a similarly high level of accuracy as in cold rolling, but without having to accept the disadvantages associated with the use of this method.
  • the form rollers are not driven, i.e. if the rotation of the form rollers is brought about only by frictional engagement with the molded part, in view of the forces occurring during the forming process, it may happen that individual form rollers, e.g. block due to insufficient lubrication of the bearing or due to contamination. In addition, it cannot be ruled out that foreign substances such as dirt, lubricants, coolants, etc. adhere to the molded part or the molded rollers. As a result, the frictional engagement between the molded part and the molded roller can be reduced to such an extent that rotation of the rollers is no longer guaranteed. For these reasons, it can be advantageous to equip the form rollers with a drive. The drive of the form rollers ensures trouble-free forming.
  • the form rollers are preferably driven by the moving movement of two tool halves. This eliminates the need to drive the form rollers, for example in the form of electric motors or pneumatic drives.
  • the present invention has for its object to provide a tool with which the above. Procedure can be performed.
  • a tool for a press for executing the above.
  • Method with a lower tool part and an upper tool part movable relative thereto, which cooperate to form the molded part, in which the form rollers are rotatably mounted on or in the lower tool part.
  • the upper part of the tool acts as a stamp when the tool halves are moved together.
  • the tool according to the invention is used on a step or transfer press.
  • sheet metal parts can be provided with a toothed or wave-shaped profile in one operation on a press.
  • the molded part is formed without cutting by the form rollers without the material being subjected to excessive stress.
  • different tooth or wave shapes can be formed on the molded part.
  • the form rollers preferably have teeth on part of their circumference, a first toothed rack being arranged transversely to the axis of a form roller.
  • the teeth of the first rack interact with the teeth of the associated form roller in order to drive them. I.e. the translational movement of the rack is converted into a rotary movement of the form roller.
  • Belt drives or stepper motors can also be used to drive the form rollers.
  • the first toothed rack advantageously interacts via a second toothed rack and a gearwheel with a third toothed rack, which is acted upon by force when the upper tool part and lower tool part move together.
  • the moving together of the two tool halves can be used to drive the form rollers.
  • a complex control of the individual form rollers can be omitted.
  • An ejector is preferably arranged in the lower tool part, which is coupled to the third toothed rack and forms a stop for the upper tool part. If the upper tool part comes to a stop on the ejector and the downward movement of the upper tool part continues, the ejector and the third rack coupled to it are also set in a downward movement. The first and the second rack are set in an upward movement via the gear. The upward movement of the first rack is in turn converted into a rotation of the associated form roller.
  • the design of the tool according to the invention in accordance with the embodiments shown in claims 11 to 13 is particularly advantageous.
  • the modular structure of the form rollers and their storage ensures that a large number of form rollers can be accommodated in the lower part of the tool even when space is limited.
  • a symmetry half of a tool according to the invention is shown in section.
  • An upper tool part 20 is in abutment against a lower tool part 10.
  • the upper tool part 20 comprises a stamp 1 and a hold-down device 2.
  • the stamp 1 and the hold-down device 2 are designed to be movable relative to the lower tool part 10.
  • a molded part 3 is arranged between the lower end of the punch 1 or the hold-down device 2 and the upper end of an ejector 4.
  • the ejector 4 is coupled to a vertically guided rack 6 in the lower tool half via intermediate elements 4a and 4b and a guide 5.
  • the ejector 4, the intermediate elements 4a and 4b, the guide 5, the intermediate piece 6a and the rack 6 are axially displaceable relative to the rest of the lower tool part 10.
  • the guide 5 is connected to the rack 6 by a form-locking element 6a in such a way that a translational movement of the rack 6 is converted into a rotary movement of a gear wheel 7.
  • the gear 7 is rotatably supported by a fixed bearing block 8 and is in engagement with the rack 6.
  • the guide 5 is also in abutment against an axially displaceable air pin 9.
  • a vertically displaceable rack 11 is arranged, which is also in engagement with the gear 7. This arrangement ensures that, on the one hand, an axial displacement of the ejector downwards is converted into an upward movement of the rack 11, and secondly, that an axial displacement of the ejector upwards is converted into a downward movement of the rack 11.
  • the rack 11 is coupled to a rack 14 via an intermediate plate 12.
  • the rack 14 is guided vertically displaceably above the rack 11 by a base body 11a and a carrier plate 16.
  • the rack 14 is in engagement with a toothed segment 15 of a form roller 19.
  • the form roller 19 is rotatably supported by a fixed axis 17a.
  • a cover plate 18 with a through opening for the rack 14 is arranged above the form roller 19.
  • a plurality of form rollers 19 are arranged on a circumference of the lower tool part.
  • the form rollers 19 are in abutment against the molded part 19 in order to give it a tooth-shaped profile.
  • the form rollers 19 are simultaneously in engagement with the toothed racks 13.
  • Each form roller 19 is assigned a toothed rack 13, so that each form roller is provided with a separate drive.
  • the form rollers 19 are each rotatably supported by an axis 17a.
  • the axis 17a is in one piece with a holding segment 17b. Both parts together form a bearing element 17a, b for a form roller 19.
  • the bearing elements 17 a, b and the form rollers 19 are assembled in a modular manner.
  • a bearing element 17 a, b and a form roller 19 each form a module.
  • the tool according to the invention works as follows. First, the sheet metal part 3 preformed in the step or transfer tool set is inserted into the tool according to the invention with a gripping feed. During the subsequent closing movement of the tool, the molded part 3 is pressed down by the punch 1. The pressure of the stamp 1 acts via the elements 4, 4a, 4b, 5 and 6a of the lower tool part 10 on the rack 6. the rack 6 is moved down when the tool is closed. Moving the rack 6 downward when the tool closes causes the gear wheel 7 to rotate counterclockwise. The rotation of the gear 7 counterclockwise in turn has the result that the rack 11 is moved upwards. The displacement of the rack 11 upwards causes the rack 14 to also be moved upwards. The upward displacement of the rack 14 has the result that the gear 19 is caused to rotate in a counterclockwise direction.
  • each individual forming roller 19 is circumferential driven counterclockwise by the integrated gear transmission.
  • the tooth or shaft profiles are expediently formed using coolant and lubricant.
  • the ejector 4 When or after opening the tool, the ejector 4 is pressed upwards by the air bolt 9. As a result of the coupling between the ejector 4 and the rack 6, the gear 7 is rotated clockwise. This means that the rack 11 meshing with the gear 7 and the rack 14 coupled to it are moved downward. As a result, the form roller 19 also undergoes a clockwise rotation.
  • gear parts with internal and external teeth can be completely manufactured in one work step on a step press. This results in a cost saving of approx. 50-70% compared to the sluice-out production on cold rolling machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
EP96101769A 1995-02-23 1996-02-07 Outil pour le formage de tôle Expired - Lifetime EP0728540B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19506391A DE19506391B4 (de) 1995-02-23 1995-02-23 Verfahren zum Herstellen eines ein zahn- oder wellenförmiges Profil aufweisenden Getriebebauteils aus einer Blechplatine
DE19506391 1995-02-23

Publications (3)

Publication Number Publication Date
EP0728540A2 true EP0728540A2 (fr) 1996-08-28
EP0728540A3 EP0728540A3 (fr) 1997-08-27
EP0728540B1 EP0728540B1 (fr) 2000-06-14

Family

ID=7754881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101769A Expired - Lifetime EP0728540B1 (fr) 1995-02-23 1996-02-07 Outil pour le formage de tôle

Country Status (3)

Country Link
EP (1) EP0728540B1 (fr)
DE (2) DE19506391B4 (fr)
ES (1) ES2146799T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007137543A1 (fr) * 2006-05-26 2007-12-06 Müller Weingarten AG Dispositif et procédé pour produire des corps profilés
DE102008002297A1 (de) 2008-06-09 2009-12-10 Allgaier Werke Gmbh Rollumformverfahren zur Herstellung von längsverzahnten Profilkörpern in topfförmigen zylindrischen Werkstücken
EP2165785A1 (fr) * 2008-09-18 2010-03-24 WEBO Werkzeugbau Oberschwaben GmbH Dispositif et procédé de fabrication de rainures longitudinales dans des pièces usinées cylindriques
DE102016006589A1 (de) 2016-05-28 2017-11-30 Form Technology Gmbh Verfahren und Vorrichtung zur Herstellung von Längsnuten in zylindrischen Bauteilen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10317506C5 (de) * 2003-04-16 2008-05-15 Daimler Ag Verfahren zum Herstellen eines hohlen Werkstücks und nach dem Verfahren hergestelltes hohles Werkstück
DE102007063361B4 (de) * 2007-12-28 2013-06-13 Aweba Werkzeugbau Gmbh Aue Vorrichtung zur Herstellung eines Blechwerkstückes mit einer zylindrischen innen und außen zahnartig profilierten Wand

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086048A1 (fr) * 1970-04-14 1971-12-31 Zahnradfabrik Friedrichshafen
US4114415A (en) * 1975-10-31 1978-09-19 Jury Mikhailovich Vodopyanov Profile plano-type knurling machine
EP0006137A1 (fr) * 1978-05-22 1980-01-09 Ex-Cell-O Corporation Appareil de formage à froid
FR2482483A1 (fr) * 1980-05-14 1981-11-20 Renault Outil de faconnage par profilage, de cannelures ou de rainures sur des pieces cylindriques en tole
US4677836A (en) * 1984-06-29 1987-07-07 Anderson-Cook, Inc. Apparatus for flanging and splining a thin-walled power transmission member
DE3715392A1 (de) * 1986-07-24 1988-03-31 Grob Ernst Fa Verfahren zum herstellen eines eine gerade oder schraege innenverzahnung aufweisenden topfartigen hohlkoerpers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380918A (en) * 1981-03-02 1983-04-26 Anderson-Cook Inc. Thin-wall spline forming machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086048A1 (fr) * 1970-04-14 1971-12-31 Zahnradfabrik Friedrichshafen
US4114415A (en) * 1975-10-31 1978-09-19 Jury Mikhailovich Vodopyanov Profile plano-type knurling machine
EP0006137A1 (fr) * 1978-05-22 1980-01-09 Ex-Cell-O Corporation Appareil de formage à froid
FR2482483A1 (fr) * 1980-05-14 1981-11-20 Renault Outil de faconnage par profilage, de cannelures ou de rainures sur des pieces cylindriques en tole
US4677836A (en) * 1984-06-29 1987-07-07 Anderson-Cook, Inc. Apparatus for flanging and splining a thin-walled power transmission member
DE3715392A1 (de) * 1986-07-24 1988-03-31 Grob Ernst Fa Verfahren zum herstellen eines eine gerade oder schraege innenverzahnung aufweisenden topfartigen hohlkoerpers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007137543A1 (fr) * 2006-05-26 2007-12-06 Müller Weingarten AG Dispositif et procédé pour produire des corps profilés
US8596104B2 (en) 2006-05-26 2013-12-03 Mueller Weingarten Ag Device and method for producing profiled bodies
DE102008002297A1 (de) 2008-06-09 2009-12-10 Allgaier Werke Gmbh Rollumformverfahren zur Herstellung von längsverzahnten Profilkörpern in topfförmigen zylindrischen Werkstücken
US8539806B2 (en) 2008-06-09 2013-09-24 Zf Friedrichshafen Ag Roll forming method for producing longitudinally toothed profiled bodies in pot-shaped cylindrical workpieces
EP2165785A1 (fr) * 2008-09-18 2010-03-24 WEBO Werkzeugbau Oberschwaben GmbH Dispositif et procédé de fabrication de rainures longitudinales dans des pièces usinées cylindriques
DE102016006589A1 (de) 2016-05-28 2017-11-30 Form Technology Gmbh Verfahren und Vorrichtung zur Herstellung von Längsnuten in zylindrischen Bauteilen
DE102016006589B4 (de) * 2016-05-28 2021-06-10 Form Technology Gmbh Verfahren und Vorrichtung zur Herstellung von Längsnuten in zylindrischen Bauteilen

Also Published As

Publication number Publication date
EP0728540A3 (fr) 1997-08-27
ES2146799T3 (es) 2000-08-16
DE19506391B4 (de) 2010-01-07
DE59605420D1 (de) 2000-07-20
DE19506391A1 (de) 1996-09-05
EP0728540B1 (fr) 2000-06-14

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