EP0131770B1 - Procédé pour le découpage fin de pièces et outil de découpage fin pour la mise en oeuvre de ce procédé - Google Patents

Procédé pour le découpage fin de pièces et outil de découpage fin pour la mise en oeuvre de ce procédé Download PDF

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Publication number
EP0131770B1
EP0131770B1 EP84106900A EP84106900A EP0131770B1 EP 0131770 B1 EP0131770 B1 EP 0131770B1 EP 84106900 A EP84106900 A EP 84106900A EP 84106900 A EP84106900 A EP 84106900A EP 0131770 B1 EP0131770 B1 EP 0131770B1
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EP
European Patent Office
Prior art keywords
ejector
die plate
blanking
workpiece
stamping
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
Application number
EP84106900A
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German (de)
English (en)
Other versions
EP0131770A1 (fr
Inventor
Friedrich-Wilhelm Honsberg
Willi Jürgensmeyer
Kurt Halbach
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.)
Dako-Werkzeugfabriken David Kotthaus & Co KG GmbH
Dako Werkzeugfabriken David Kotthaus GmbH and Co KG
Original Assignee
Dako-Werkzeugfabriken David Kotthaus & Co KG GmbH
Dako Werkzeugfabriken David Kotthaus 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.)
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Publication date
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Application filed by Dako-Werkzeugfabriken David Kotthaus & Co KG GmbH, Dako Werkzeugfabriken David Kotthaus GmbH and Co KG filed Critical Dako-Werkzeugfabriken David Kotthaus & Co KG GmbH
Publication of EP0131770A1 publication Critical patent/EP0131770A1/fr
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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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
    • 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
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • Y10T29/49472—Punching or stamping

Definitions

  • the invention relates to a method for fineblanking workpieces, according to the preambles of patent claims 1 and 2, and to fineblanking tools intended for the exercise thereof, according to the preambles of patent claims 3 and 4.
  • Fine blanking differs from conventional punching technology essentially in that the workpiece is firmly clamped before and during the cutting process and guided with tight tolerances.
  • the material - usually steel strip with a thickness of 0.3 mm to about 15 mm - is clamped in the tool between a guide or press plate and a cutting plate.
  • the guide plate and / or the cutting plate carry an annular tooth adapted to the workpiece outline, which is pressed into the material.
  • the ring spike prevents the material from flowing away to the side.
  • the cutting process is carried out by means of a cutting punch guided in the guide plate with a tight tolerance and an ejector also closely tolerated in the cutting plate, which presses against the cutting punch with a counterforce of about 10 to 20% of the cutting force, so that the two punches start cutting out Guide the material and later the workpiece between them.
  • a number of internal shaping punches and, in turn, corresponding ejectors can be used for the purpose of shaping or perforating the workpiece.
  • the cutting punches usually cannot dip into the recess of the cutting plate due to the narrow tolerances, a thin cutting burr remains on the circumferential edge of the workpiece facing the cutting punch, and the cutting punch and the ejector basically have essentially the same circumferential configuration as the guide openings are analog in the guide plate and in the cutting plate.
  • EP-A1-0 043 359 regarding the prior art of fineblanking, from which the invention is based.
  • the workpiece and the method according to this document differ from the generally customary fineblanking technique explained in the introduction in that the conventional ring serrations are omitted and instead the material to be finely cut is supported on its lateral surface outside the cutting line by supporting members arranged on the side of the cutting die. This should enable tear-free cut surfaces, even with thicker materials.
  • DE-B1-27 27 445 discloses a multi-stage process with an associated device for cutting and / or punching workpieces from metallic sheets.
  • a first process step the sheet is cut, but the workpiece is not yet cut.
  • the workpiece, which was initially only cut is counter-cut in the opposite direction with a second punch.
  • the workpiece is cut out in the effective direction of the cutting punch of the first work step. Counter-cutting is to achieve workpieces with absolutely burr-free cutting surfaces.
  • the invention is therefore based on the object of specifying methods for fineblanking workpieces which allow the manufacture of finely cut workpieces which are conical or wedge-shaped at least in parts of their outer cut surfaces in a simple manner.
  • Such a problem arises, for example, in the case of spur gears, the tooth flanks of which should be at a certain inclination to one another.
  • Another of many conceivable applications would be a gear wheel, the head and tooth space surfaces of which are to be arranged at a certain inclination relative to the axis of rotation.
  • a first method according to the invention which achieves the underlying task, is that the workpiece is pressed into a recess of the cutting plate that tapers or conically narrows at least on partial circumferential areas during the cutting out and that the cut-out conical workpiece against the cutting direction is ejected again by means of the ejector the cutting plate is ejected.
  • this means that the actual cutting process is overlaid in time and place by an embossing process that takes place within the recess of the cutting plate.
  • the proportion of material that is brought into flow and cut and corresponds to the workpiece not only experiences an axial feed in the resulting direction of movement of the cutting punch, but also, at the same time, an at least partial compression towards the cutting punch axis in accordance with the inclination or conicity.
  • a fine blanking tool for practicing this method according to claim 3 according to the invention is that the inner surface of the Breakthrough in the cutting plate, forming flat surfaces, is arranged at least on parts of its circumference and on a section in the axial direction of the ejector, starting in the support plane of the material, inclined to the ejector axis and that the cut conical workpiece against the cutting direction by means of the ejector from the Cutting plate can be ejected.
  • the inner surface surface lines of the workpiece contour in the cutting plate are not completely parallel to the ejector axis, but are inclined at a distance approximately corresponding to the workpiece thickness from the support plane of the workpiece away according to the desired conicity or the desired inclination of the workpiece inclined surfaces.
  • the end section of the cutting plate facing the material or workpiece thus forms a circumferential embossing shape with inward-facing embossing surfaces located in this section.
  • the section having the embossing surfaces measured in the axial direction of the ejector is slightly larger than the material thickness of the material. Because of the tapering of the cross section of the embossing recess in the cutting plate, the material displaced here flows in the direction of the ejector axis.
  • the particular advantage of the described method for producing a workpiece with an at least partially conical or inclined cutting surface is that it does not require any further work stages, in particular also no machining.
  • the device required to carry out the method is also of simple configuration and hardly more complex than a conventional fineblanking tool which only cuts.
  • the invention proposes a two-stage process, which is characterized in that in a first step the workpiece is cut in a manner known per se in the manner of enforcement from the material and in a second step the cutting process is completed and the workpiece is pressed into a tapered or conically narrowing recess of an embossing plate, at least on partial circumferential areas, and that the embossed conical workpiece is removed from the embossing plate against the embossing direction by means of the ejector.
  • the two steps can of course be carried out in a machine in a follow-up tool.
  • the first step practically does not differ from a fineblanking process to produce a so-called "enforcement” (see VDI guidelines, p. 7, “3.6. Forming processes", example 6 from above).
  • the difference is essentially only that the "asserted material" in the process according to the invention essentially already corresponds to the finished workpiece in the outer outline.
  • This is then embossed in the second work step in a second tool step on the outer cut surfaces and at the same time finished cut.
  • a fineblanking tool for carrying out this two-stage process is characterized according to claim 4, characterized in that the tool of the first stage is designed in a manner known per se to form an enforcement and that in the tool of the second stage the inner surface of the opening in the embossing plate, forming embossing surfaces, at least is arranged on parts of its circumference and on a section in the axial direction of the ejector, starting in the plane of the embossing plate, inclined to the ejector axis and that the embossed conical workpiece can be removed from the embossing plate by means of the ejector.
  • the section having the embossing surfaces measured in the axial direction of the ejector is at least slightly larger than the material thickness of the material.
  • the tool of the second working stage does not differ from the individual tool performing the first method.
  • the cutting plate is essentially converted into an embossing plate.
  • the tool according to FIG. 1 comprises - in an initially conventional design - a cutting plate 10 with an opening 11 corresponding to the workpiece contour, in which a complementarily contoured counter-holder (ejector) 12 is arranged displaceably in the direction of its longitudinal axis 13. Above this half of the tool is a guide or press plate 14 with a contoured recess 15 for the correspondingly contoured punch 16, which is arranged coaxially with the counter-holder (ejector) 12.
  • a guide or press plate 14 with a contoured recess 15 for the correspondingly contoured punch 16 which is arranged coaxially with the counter-holder (ejector) 12.
  • at least one internal shape stamp and accordingly at least one ejector must be arranged within the counter-holder (ejector) 12 and accordingly within the cutting stamp 16, for example of the type described under "2.1. Working principle" described on page 2 of the VDI guidelines 3345.
  • the guide or press plate 14 On the side facing the material 17 (sheet metal strip), the guide or press plate 14 has an annular spike 18 which is wedge-shaped in cross section and penetrates the material 17 and prevents it from flowing out.
  • the opening 11 in the cutting plate 10 now has the peculiarity that it, starting from the material support plane 19 over a section 20 measured in the direction of the axis 13, which is slightly larger than the material thickness 21, on its inwardly facing peripheral surface 22 is at least partially inclined or conical, in such a way that - as can be clearly seen in FIG. 1 - the cross section of the recess 11 towards the counter-holder (ejector) 12 decreases at the corresponding points.
  • Cutting punch 16 and counter-holder (ejector) 12 therefore have different cross sections Q, q and diameter.
  • the inclination 23 can be approximately 3 ° -4 °, but also more.
  • the corresponding angle of inclination is indicated at 24.
  • the cut-out workpiece 25 shown in FIG. 2 results in the form of a truncated cone with a uniformly conical outer cutting surface 26 all around.
  • Fig. 1 shows the final cutting state, in the connection of which the tool halves open again.
  • the tool parts are actuated in the manner and sequence customary for fineblanking in that the cutting plate 10 and guide plate 14 are first moved against one another when the material is not deformed until they grasp the material between them. At the same time, cutting punches 16 and counterholders (ejectors) 12 run towards each other until they clamp material 17 between them.
  • the cutting punch 16 then moves downward with respect to FIG. 2, while the counter-holder (ejector) 12 follows this movement while exerting a counter pressure until the situation shown in FIG. 1 is reached.
  • FIG. 3 shows the first stage of a two-stage tool for carrying out the two-stage method.
  • This tool is constructed from a cutting plate 110, a counter-holder (ejector) 112, a guide or pressing plate 114 with ring serration 118 and a cutting punch 116 guided in the plate 114.
  • This tool and its function correspond to a conventional fineblanking tool with which enforcements are generated .
  • the "enforced" blank is identified by 127 and is shown separately once again adhering to the material 117 in FIG. 4.
  • the pre-cut blank 127 is still connected to the material 117 via a relatively strong material bridge 128. 4, the material 117 with the partially cut blank 127 is fed to the second tool stage shown in FIG. 5.
  • the individual parts of this tool level are each provided with reference numbers increased by 100.
  • plate 210 is an "embossing plate”. Analogously to the cutting plate designated by 10 in FIG. 1, it has a section 220 with an at least partially conical or inclined embossing surface 222. Accordingly, the finished workpiece 225, like the workpiece 25 in FIG. 2, has the shape of a truncated cone with an all-round cone with an analogous geometry Outer cut surface 226. Also in the two-stage process, an embossing process takes place, this time starting from a precut or cut workpiece.
  • FIG. 7 schematically shows a typical workpiece, the methods and tools according to the invention are particularly suitable for producing.
  • It is an annular spur gear 30 with teeth 31.
  • the tooth flanks 32 and 33 have a taper at an angle 35 with respect to the axis of rotation 34 of the toothed ring 30.
  • the tooth bases 36 and the tooth heads 37 can have surfaces whose surface lines run parallel to the axis 34.
  • This workpiece 30 thus shows a typical example of the fact that and how only parts of the outer cut surfaces of a finely cut workpiece can be produced in a simple manner conically or obliquely.

Claims (5)

1. Procédé de découpage précis de pièces (25), dans lequel on enserre la matière (17) entre une plaque de guidage (14) (plaque de pression) et une plaque de coupe (10) et découpe la pièce (27) au moyen d'un poinçon de coupe (16) et d'un organe de retenue (éjecteur) (12) agissant contre celui-ci, guidé dans un évidement de la plaque de coupe (10) et la travaille en outre éventuellement au moyen de poinçons de fornage intérieur,
caractérisé par le fait que pendant le découpage, on enfonce la pièce (27) dans un évidement de la plaque de coupe (10) s'amincissant ou rétrécissant coniquement au moins sur des régions périphériques partielles (22) et que l'on éjecte à nouveau de la plaque de coupe (10) la pièce conique découpée (25), à l'envers du sens de coupe, au moyen de l'éjecteur (12).
2. Procédé de découpage précis de pièces (225), dans lequel on enserre la matière (117) entre une plaque de guidage (114, 214) et une plaque de coupe (110) et découpe la pièce (127, 227) au moyen d'un poinçon de coupe (116, 216) et d'un organe de retenue (éjecteur) (112, 212) agissant contre celui-ci, guidé dans un évidement de la plaque de coupe, et la travaille en outre éventuellement au moyen de poinçons de formage intérieur,
caractérisé par le fait que dans une première étape de travail (figure 3) on entame la pièce (127) de manière en elle-même connue à la façon d'une traversée hors de la matière (117) et que, dans une deuxième étape de travail (figure 5), on achève le processus de coupe et enfonce la pièce (227) dans un évidement d'une plaque d'empreinte (210) s'amincissant ou rétrécissant coniquement au moins sur des régions partielles de circonférence (222) et que l'on retire à nouveau de la plaque d'empreinte (210) la pièce conique empreinte (225), à l'envers du sens d'empreinte, au moyen de l'éjecteur (212).
3. Outil de découpage précis pour la mise en oeuvre du procédé selon la revendication 1, muni d'une plaque de coupe (10) avec perforation (11) dans laquelle un éjecteur (12) à contour correspondant est disposé de manière à pouvoir coulisser dans la direction de son axe lonqitudinal (13), ainsi que d'une plaque de guidage ou de pression (14) prévue au-dessus de la plaque de coupe, avec évidement (15) pour un poinçon de coupe (16) à contour correspondant, guidé coaxialement à l'éjecteur (12) (organe de retenue),
caractérisé par le fait que la surface intérieure (22) de la perforation de la plaque de coupe (10), formant des surfaces d'empreinte, est disposée de façon inclinée en direction de l'axe (13) de l'éjecteur, au moins sur des parties de sa périphérie, ainsi que sur un tronçon (20) dans la direction de l'axe (13) de l'éjecteur (12), en commençant dans le plan d'appui (19) de la matière (17), et que la pièce conique découpée (25) peut être éjectée de la plaque de coupe (10), à l'envers du sens de coupe, au moyen de l'éjecteur (12).
4. Outil de découpage précis pour la mise en oeuvre du procédé selon la revendication 2, muni d'une plaque de coupe (110) avec perforation (111), d'un éjecteur (112) (organe de retenue) guidé dans celle-ci, d'une plaque de guidage ou de pression (114) et d'un poinçon de coupe (116) guidé dans celle-ci, à un premier stade de travail, ainsi que d'une plaque d'empreinte (210) avec surface d'empreinte périphérique (222), d'un éjecteur (212) (organe de retenue) guidé dans la plaque d'empreinte (210) et d'une plaque de guidage (214) disposée par dessus avec poinçon d'empreinte (216), au deuxième stade de travail,
caractérisé par le fait que l'outil du premier stade de travail (figure 3) est conçu de manière en elle-même connue pour constituer une traversée (figure 4) et que, dans l'outil du deuxième stade de travail (figure 5), la surface intérieure (222) de la perforation de la plaque d'empreinte (210), formant des surfaces d'empreinte, est disposée de façon inclinée en direction de l'axe (213) de l'éjecteur au moins sur des parties périphériques, ainsi que sur un tronçon (220), dans la direction axiale (213) de l'éjecteur (212), en commençant dans le plan (219) de la plaque d'empreinte (210), et que la pièce conique empreinte (225) peut être retirée de la plaque d'empreinte (210), à l'envers du sens d'empreinte, au moyen de l'éjecteur (212).
5. Outil de découpaqe précis selon l'une des revendications 3 et 4,
caractérisé par le fait que le tronçon (20; 220), mesuré dans la direction axiale (13; 213) de J'éjecteur (12; 212), présentant les surfaces d'empreinte (22; 222), est légèrement plus grand que l'épaisseur (21; 221) de la matière (17; 217).
EP84106900A 1983-07-08 1984-06-16 Procédé pour le découpage fin de pièces et outil de découpage fin pour la mise en oeuvre de ce procédé Expired EP0131770B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3324680A DE3324680A1 (de) 1983-07-08 1983-07-08 Verfahren zum feinschneiden von werkstuecken und feinschneidwerkzeug zur ausuebung des verfahrens
DE3324680 1983-07-08

Publications (2)

Publication Number Publication Date
EP0131770A1 EP0131770A1 (fr) 1985-01-23
EP0131770B1 true EP0131770B1 (fr) 1987-09-02

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EP84106900A Expired EP0131770B1 (fr) 1983-07-08 1984-06-16 Procédé pour le découpage fin de pièces et outil de découpage fin pour la mise en oeuvre de ce procédé

Country Status (4)

Country Link
US (1) US4586360A (fr)
EP (1) EP0131770B1 (fr)
JP (1) JPS6068118A (fr)
DE (2) DE3324680A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103212635A (zh) * 2013-04-17 2013-07-24 武汉理工大学 汽车变速器同步器齿环精冲和拉深复合成形工艺及模具

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3605558C5 (de) * 1985-04-12 2004-10-14 Volkswagen Ag Kupplungsscheiben für eine Flüssigkeitsreibungskupplung und Verfahren zu deren Herstellung
US4774865A (en) * 1987-09-22 1988-10-04 Wallis Bernard J Die stamping system
DE3802247C1 (fr) * 1988-01-27 1989-05-18 E. Winkemann Gmbh & Co Kg, 5970 Plettenberg, De
US4934230A (en) * 1988-08-24 1990-06-19 Wallis Bernard J Die stamping system
JP2864469B2 (ja) * 1990-08-06 1999-03-03 曙ブレーキ工業株式会社 面取り加工用プレス装置
JP3430527B2 (ja) * 1992-12-24 2003-07-28 株式会社デンソー 金属薄板の剪断加工方法
DE19738635C2 (de) * 1997-09-04 2002-09-26 Feintool Internat Holding Ag L Verfahren zum Herstellen von exakten Schnittflächen
US6468453B1 (en) * 1999-10-08 2002-10-22 Shear Technologies, Llc Methods and apparatus for manufacturing fiber-cement soffits with air vents
FR2803781B1 (fr) * 2000-01-18 2002-03-08 Emt 74 Procede et dispositif de decoupage sur presse
JP3975715B2 (ja) * 2001-10-10 2007-09-12 トヨタ紡織株式会社 プレス成形方法及びそれに用いる装置
DE602005015303D1 (de) * 2004-04-09 2009-08-20 Toyota Boshoku Kk Schervorrichtung
EP2036631B1 (fr) * 2007-09-14 2010-11-24 Feintool Intellectual Property AG Procédé et dispositif destinés à la fabrication de pièces découpées dotées de surfaces de fonction agrandies
PL2042249T3 (pl) * 2007-09-26 2010-08-31 Feintool Ip Ag Sposób i urządzenie do wytwarzania wytłoczek o znacznie gładszej powierzchni cięcia i powiększonej powierzchni funkcjonalnej
DE102008026893A1 (de) * 2008-06-05 2009-12-10 Schaeffler Kg Verfahren zum Herstellen eines Käfigelements für einen Wälzlagerkäfig und Wälzlagerkäfig
DE202009000684U1 (de) 2009-01-16 2009-04-09 Finova Feinschneidtechnik Gmbh Vorrichtung zum Feinschneiden von Werkstücken
DE502009000546D1 (de) 2009-01-19 2011-05-26 Finova Feinschneidtechnik Gmbh Verfahren und Vorrichtung zum Feinschneiden von Werkstücken
DE102009029756B4 (de) * 2009-06-18 2018-02-01 Atf Auer Teilefertigung Gmbh Verfahren zur Herstellung von Stanzteilen, insbesondere von Synchronringen, Kupplungskörpern oder Kupplungsscheiben
EP2357048B1 (fr) * 2010-02-10 2013-06-05 Feintool Intellectual Property AG Procédé et dispositif destinés à influencer la surface de coupe et de fonction sur des pièces finies coupées en fines tranches
US20130227999A1 (en) * 2011-01-11 2013-09-05 Honda Motor Co., Ltd. Workpiece punch-molding method and workpiece punch-molding device
DE102011102288B4 (de) 2011-05-23 2013-03-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Herstellung eines Stirnrads mit einer Schrägverzahnung
DE102011112215A1 (de) * 2011-09-02 2013-03-07 Robert Bosch Gmbh Spannhebelanordnung, Verfahren zum Herstellen eines Spannhebels und Ansteuergerät
TW201345685A (zh) * 2012-05-02 2013-11-16 Jun-Sheng Jiang 易碎片狀工作物之裁切方法及裝置
WO2014013290A2 (fr) 2012-07-06 2014-01-23 Lozano Bonet Jose Presse d'enfonçage
JP2014018801A (ja) * 2012-07-12 2014-02-03 Honda Motor Co Ltd 孔開け加工方法、孔を備えた構造体の製造方法および孔を備えた構造体
US20140020534A1 (en) * 2012-07-17 2014-01-23 National Taiwan Ocean University Fine hydro-blanking device
DE102013015180A1 (de) 2013-09-11 2015-03-12 Webo Werkzeugbau Oberschwaben Gmbh Verfahren und Vorrichtung zum Präzisionsschneiden von Werkstücken in einer Presse
TWI583456B (zh) * 2013-11-05 2017-05-21 王正平 溝槽型精密下料裝置
DE102014000299B3 (de) * 2014-01-15 2015-07-16 Rixen Wolfgang Verfahren zur Erzeugung von Durchgängen in einem metallischen Körper mittels Hochgeschwindigkeitsscherschneiden sowie dessen Verwendung
CN104001806B (zh) * 2014-06-05 2015-09-30 武汉理工大学 一种斜齿圆柱齿轮的板料成形模具及方法
JP6562070B2 (ja) * 2015-02-25 2019-08-21 日本製鉄株式会社 せん断加工方法
EP3210688B1 (fr) 2016-02-24 2018-05-23 ATF Auer Teilefertigung GmbH Procede et outil destines a fabriquer des pieces en tole pour la synchronisation de boite de vitesses
DE102016002538B4 (de) 2016-02-24 2021-09-23 Wvl Werkzeug- Und Vorrichtungsbau Lichtenstein Gmbh Verfahren und Werkzeug zur Herstellung von Blechteilen für Getriebesynchronisation
ES2941059T3 (es) * 2017-05-30 2023-05-16 Feintool Int Holding Ag Método de fabricación de piezas troqueladas

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE283844C (fr) *
GB190702661A (en) * 1907-02-02 1907-05-23 John Fellows Improvements in the Manufacture of Wrought Metal Articles each having a Length considerably Greater than its Width.
US1847926A (en) * 1929-02-28 1932-03-01 Monroe Calculating Machine Method of forming internal and crown gears
GB336803A (en) * 1929-10-21 1930-10-23 Ver Leichtmetallwerke Gmbh Improvements in rivets and to methods of manufacturing same
DE2034043A1 (de) * 1970-07-09 1972-01-13 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Vorrichtung zur spanlosen Herstellung von Kegelzahnrädern
GB1367639A (en) * 1971-11-03 1974-09-18 Trent Polytechnic Joint Educat Punching smooth-walled parallel-sided holes in or blanks from metal stock
DE2727445C2 (de) * 1977-06-18 1979-09-06 Lange, Kurt, Prof. Dr.-Ing., 7000 Stuttgart Verfahren und Vorrichtung zum Ausschneiden und/oder Lochen von Werkstücken aus metallischen Flachwerkstoffen
US4299112A (en) * 1977-10-20 1981-11-10 Kabushiki Kaisha Wako Method and device for producing synchronizer ring
US4142396A (en) * 1977-11-17 1979-03-06 Aluminum Company Of America Blanking and forming tapered wall articles
JPS5570426A (en) * 1978-11-20 1980-05-27 Toyota Motor Corp Punching die for helical gear
JPS5820691B2 (ja) * 1980-06-30 1983-04-25 三菱製鋼株式会社 ギヤ−の歯部リ−ド方向にテ−パを成形する加工装置
JPS5714440A (en) * 1980-06-30 1982-01-25 Mitsubishi Steel Mfg Co Ltd Method and device for production of product having tooth profile
ATE9768T1 (de) * 1980-07-08 1984-10-15 Feintool Ag Lyss Werkzeug und verfahren zum feinschneiden.
DE3169783D1 (en) * 1981-03-17 1985-05-15 Edward Donald Bennett Apparatus for producing a blank from stock material
JPS57190731A (en) * 1981-05-20 1982-11-24 Aida Eng Ltd Die for precision blanking

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103212635A (zh) * 2013-04-17 2013-07-24 武汉理工大学 汽车变速器同步器齿环精冲和拉深复合成形工艺及模具
CN103212635B (zh) * 2013-04-17 2015-05-27 武汉理工大学 汽车变速器同步器齿环精冲和拉深复合成形工艺及模具

Also Published As

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DE3324680A1 (de) 1985-01-24
US4586360A (en) 1986-05-06
JPH0337445B2 (fr) 1991-06-05
JPS6068118A (ja) 1985-04-18
DE3465711D1 (en) 1987-10-08
EP0131770A1 (fr) 1985-01-23

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