EP0131770B1 - Verfahren zum Feinschneiden von Werkstücken und Feinschneidwerkzeug zur Ausübung des Verfahrens - Google Patents

Verfahren zum Feinschneiden von Werkstücken und Feinschneidwerkzeug zur Ausübung des Verfahrens Download PDF

Info

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
Authority
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
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0131770A1 (de
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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6203499&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0131770(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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/de
Application granted granted Critical
Publication of EP0131770B1 publication Critical patent/EP0131770B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/02Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16Shoulder or burr prevention, e.g. fine-blanking
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49462Gear making
    • Y10T29/49467Gear shaping
    • Y10T29/49472Punching 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP84106900A 1983-07-08 1984-06-16 Verfahren zum Feinschneiden von Werkstücken und Feinschneidwerkzeug zur Ausübung des Verfahrens Expired EP0131770B1 (de)

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 (de) 1985-01-23
EP0131770B1 true EP0131770B1 (de) 1987-09-02

Family

ID=6203499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106900A Expired EP0131770B1 (de) 1983-07-08 1984-06-16 Verfahren zum Feinschneiden von Werkstücken und Feinschneidwerkzeug zur Ausübung des Verfahrens

Country Status (4)

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

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 (34)

* 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 (ru) * 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
JP4899864B2 (ja) * 2004-04-09 2012-03-21 トヨタ紡織株式会社 せん断加工装置
DE502007005770D1 (de) * 2007-09-14 2011-01-05 Feintool Ip Ag Verfahren und Vorrichtung zum Herstellen von Stanzteilen mit vergrösserter Funktionsfläche
DK2042249T3 (da) * 2007-09-26 2010-06-21 Feintool Ip Ag Fremgangsmåde og indretning til fremstilling af stanseemner med næsten glat og forstørret funktionel overflade
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
PL2208552T5 (pl) 2009-01-19 2014-10-31 Finova Feinschneidtechnik Gmbh Sposób i urządzenie do wykrawania dokładnego części obrabianych
DE102009029756B4 (de) * 2009-06-18 2018-02-01 Atf Auer Teilefertigung Gmbh Verfahren zur Herstellung von Stanzteilen, insbesondere von Synchronringen, Kupplungskörpern oder Kupplungsscheiben
EP2357048B1 (de) * 2010-02-10 2013-06-05 Feintool Intellectual Property AG Verfahren und Vorrichtung zum Beeinflussen der Schnitt- und Funktionsfläche an feingeschnittenen Fertigteilen
JP5600187B2 (ja) * 2011-01-11 2014-10-01 本田技研工業株式会社 ワークの打抜き成形方法及びワークの打抜き成形装置
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
MX355139B (es) 2012-07-06 2018-04-06 Lapmaster Int Llc Prensa de estampación.
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
CN107249774B (zh) * 2015-02-25 2019-09-24 日本制铁株式会社 剪切加工方法
DE102016002538B4 (de) 2016-02-24 2021-09-23 Wvl Werkzeug- Und Vorrichtungsbau Lichtenstein Gmbh Verfahren und Werkzeug zur Herstellung von Blechteilen für Getriebesynchronisation
EP3210688B1 (de) 2016-02-24 2018-05-23 ATF Auer Teilefertigung GmbH Verfahren und werkzeug zur herstellung von blechteilen für getriebesynchronisation
EP3409392B1 (de) * 2017-05-30 2022-12-28 Feintool International Holding AG Verfahren zur herstellung von stanzteilen
CN109079020A (zh) * 2017-06-13 2018-12-25 宁波光华电池有限公司 一种圆饼状工件的落料模

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE283844C (ru) *
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
DE3069413D1 (en) * 1980-07-08 1984-11-15 Feintool Ag Lyss Tool and method for precision cutting
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

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

Similar Documents

Publication Publication Date Title
EP0131770B1 (de) Verfahren zum Feinschneiden von Werkstücken und Feinschneidwerkzeug zur Ausübung des Verfahrens
DE4322063C2 (de) Verfahren und Vorrichtung zum Ausschneiden eines Ausschnittes aus einer Wandung eines nach dem Innenhochdruck-Umformverfahren hergestellten Hohlkörpers
DE2747382C2 (de) Verfahren zur Herstellung eines einen hohlzylindrischen Teil aufweisenden Flanschstückes und Vorrichtung zur Durchführung des Verfahrens
EP1986801B1 (de) Verfahren und vorrichtung zum herstellen eines ausschnittes oder durchbruchs in der wandung eines nach dem innenhochdruck-umformverfahren ausgebildeten bauteils
DE19545890C2 (de) Verfahren zur Herstellung eines Werkstücks mit Nabe und Drück- oder Drückwalzmaschine
EP1108483B1 (de) Verfahren und Vorrichtung zum Drückwalzen
DE1918780C2 (de) Verfahren und Vorrichtung zum Feinschneiden von Werkstücken aus Blech
WO1986001441A1 (fr) Douilles de pression pour tuyaux
DE102013112123B4 (de) Metallhülse und Verfahren zu deren Herstellung
DE102009029756B4 (de) Verfahren zur Herstellung von Stanzteilen, insbesondere von Synchronringen, Kupplungskörpern oder Kupplungsscheiben
EP2403665B1 (de) Vorrichtung zur herstellung eines profils an einem blechteil
DE2509494A1 (de) Verfahren und vorrichtung zur erzeugung eines abreissteiles in einem blech
DE2320336B2 (de) Vorrichtung zur spanlosen Herstellung von Kegelzahnrädern aus Metallrohteilen
EP0379649B1 (de) Verfahren zum Herstellen von Durchzügen an Blechteilen
DE102011102288A1 (de) Vorrichtung und Verfahren zur Herstellung eines Stirnrads mit einer Schrägverzahnung
DE19911125C1 (de) Verfahren und Vorrichtung zum Trennen oder Lochen eines Werkstücks unter Einfluß eines unter Hochdruck stehenden Druckmediums
EP0279269B1 (de) Verfahren zur Herstellung einer Tiefziehdose aus Blech
DE19724657C2 (de) Verfahren und Vorrichtung zum Herstellen eines rotationssymmetrischen Körpers
DE102018110119B3 (de) Verfahren und Vorrichtung zur Herstellung eines Endprodukts aus einem Zwischenprodukt mittels Umformung
DE102005018540B3 (de) Verfahren zum Herstellen eines Bauteils
WO2003022483A1 (de) Vorrichtung zur herstellung eines eine konzentrische nabe aufweisenden formkörpers
EP3393694B1 (de) Verfahren zur umformenden herstellung einer verzahnung und werkzeugvorrichtung zur kalibrierung des verzahnungseinlaufs und/oder verzahnungsauslaufs
DE19632279A1 (de) Verfahren zur Herstellung eines scheibenförmigen Teiles
DE2509493C3 (de) Verfahren und Vorrichtung zur Erzeugung eines Abreißteiles in einem Blech
EP0623333A2 (de) Verfahren und Vorrichtung zur Herstellung von Tampons

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR IT LI

17P Request for examination filed

Effective date: 19850320

17Q First examination report despatched

Effective date: 19860313

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR IT LI

REF Corresponds to:

Ref document number: 3465711

Country of ref document: DE

Date of ref document: 19871008

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: FEINTOOL AG

Effective date: 19880603

PLBM Termination of opposition procedure: date of legal effect published

Free format text: ORIGINAL CODE: 0009276

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION PROCEDURE CLOSED

27C Opposition proceedings terminated

Effective date: 19890716

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030630

Year of fee payment: 20

Ref country code: CH

Payment date: 20030630

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030702

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20040615

Ref country code: CH

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20040615

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO