EP0189447B1 - Schmiedeverfahren - Google Patents
Schmiedeverfahren Download PDFInfo
- Publication number
- EP0189447B1 EP0189447B1 EP85903281A EP85903281A EP0189447B1 EP 0189447 B1 EP0189447 B1 EP 0189447B1 EP 85903281 A EP85903281 A EP 85903281A EP 85903281 A EP85903281 A EP 85903281A EP 0189447 B1 EP0189447 B1 EP 0189447B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- teeth
- upsetting
- tooth
- tips
- semi
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/12—Forming profiles on internal or external surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
-
- 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
- Y10T29/49474—Die-press shaping
Definitions
- the invention relates to a method for producing a synchronizing component provided with short teeth with undercut teeth for manual transmissions by precision forging, the teeth, each of which is attached to a common cylinder surface with its radially inner side and is placed with its foot on a common lower plane surface be produced with parallel tooth flanks and then fully compressed.
- Such a method for the production of power transmission with claws or pockets is known from DE-A1-3 134 857.
- Claws are produced there during forging, the top surfaces of which are produced with oversize at least along their edges common to the coupling surfaces.
- the desired inclination of the coupling surfaces is achieved by a subsequent calibration stroke.
- the claws When calibrating, the claws can be supported between die surfaces running transversely to the coupling surfaces.
- the present invention has for its object to enable the unrestricted application of the known method to synchronous components of the type mentioned and to achieve increased accuracy in the formation of the coupling surfaces.
- Process step a) can be carried out by cold or hot forging; Equivalent cold extrusion is also an option.
- Method step b which relates to one or more calibration strokes, comprises a three-stage deformation by calibration, so it differs fundamentally from the prior art mentioned.
- aa the tooth heads produced with an oversize in the direction of the tooth length are first pre-compressed; the straight ones remain, i.e. in radial planes with respect to the tooth flanks running common to all teeth, essentially still preserved. There is a material compression, which then acc. To the second calibration stage.
- Feature bb) leads to strain hardening, particularly in the foot area of the teeth supported by the lower flat surface. This strain hardening in the foot area is not only very important for the precise shaping of the tooth root fillet; their special effect is that they are gem.
- Feature cc) controls the slope of the tooth flanks forming the coupling surface exactly.
- the angle of the tooth flanks and the flank shape accuracy it may be appropriate to support the tooth flanks on the die side.
- the roof shape of the tooth tips which is characteristic of short toothing, is finished, the tooth flanks receiving their final slope.
- the cylinder surface in the region of the tooth heads is limited by an upper plane surface over which the semifinished product tooth heads protrude with at least a part of their oversize and that the teeth deform in such a way during the final upsetting that the tooth tips end in or below the upper flat surface.
- the degree of deformation during upsetting of the tooth heads is to be controlled in such a way that the teeth formed on the semi-finished product are sheared off the cylinder surface in an area lying between the upper flat surface and the finished tooth head shape, at the latest during the final upsetting.
- the sheared material is formed to form the oblique tooth flanks in the direction of the tooth gap; the cylinder surface common to all teeth forms an effective support surface which does not prevent deformation and which can be unconnected to the tooth in the region of the largest tooth width.
- the half section shown in FIG. 1 through a synchronous component 1 with a central bore 2 selected from a large number of possible variants shows an annular body 3 shown with a hatched cross section, on which a cylindrical surface 6 is formed between an upper flat surface 4 and a lower flat surface 5.
- the teeth 7 of a short toothing are attached to the cylindrical surface 6, a total of four segments 8 with five teeth each attached to it being provided distributed over the circumference of the synchronous component 1.
- the middle tooth representation acc. FIG. 2 shows a finished tooth 7 (in solid lines) and a forged tooth (in dashed lines) according to the right-hand shape cc) of the semi-finished product.
- the middle tooth representation is intended to demonstrate the degree of deformation from pre-forging to final calibration. This is particularly clear from the presentation acc. Fig. 3 shows. 3, the cylindrical surface 6, projected into the plane, is shown between two dashed lines.
- the respective deformation from deformation stage aa) for pre-forging to bb) for pre-upsetting and further to cc) for finished upsetting is exaggerated to illustrate the situation.
- the latter two process stages take place within the calibration process, namely through one or more calibration beats.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Gears, Cams (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85903281T ATE33772T1 (de) | 1984-07-24 | 1985-07-08 | Schmiedeverfahren. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3427156A DE3427156C2 (de) | 1984-07-24 | 1984-07-24 | Verfahren zum Herstellen eines Synchronteils mit hinterschnittenen Zähnen |
DE3427156 | 1984-07-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0189447A1 EP0189447A1 (de) | 1986-08-06 |
EP0189447B1 true EP0189447B1 (de) | 1988-04-27 |
Family
ID=6241368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85903281A Expired EP0189447B1 (de) | 1984-07-24 | 1985-07-08 | Schmiedeverfahren |
Country Status (14)
Country | Link |
---|---|
US (1) | US4700446A (xx) |
EP (1) | EP0189447B1 (xx) |
JP (1) | JPS61502736A (xx) |
BR (1) | BR8506856A (xx) |
CA (1) | CA1249458A (xx) |
CS (1) | CS259530B2 (xx) |
DE (2) | DE3427156C2 (xx) |
ES (1) | ES8701549A1 (xx) |
HU (1) | HU198139B (xx) |
IL (1) | IL75883A (xx) |
IN (1) | IN164593B (xx) |
WO (1) | WO1986000838A1 (xx) |
YU (1) | YU45265B (xx) |
ZA (1) | ZA855513B (xx) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011111216A1 (de) | 2011-08-20 | 2013-02-21 | Sona Blw Präzisionsschmiede Gmbh | Synchronring |
DE102011088864A1 (de) | 2011-12-16 | 2013-06-20 | Cdp Bharat Forge Gmbh | Kaltkalibrierpresse für Monoblockschalträder mit einbaufertiger Kupplungsverzahnung |
EP3273084B1 (de) | 2016-07-22 | 2022-03-30 | Diehl Metall Stiftung & Co. KG | Synchronring |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2600274B1 (fr) * | 1986-06-18 | 1990-03-09 | Garconnet Michel | Procede pour la realisation de pignons dont le bord d'attaque des dents forme un angle a arete vive |
US5230134A (en) * | 1992-02-11 | 1993-07-27 | Laue Charles E | Method of making a petal rod |
DE4220523A1 (de) * | 1992-06-23 | 1994-01-05 | Hirschvogel Umformtechnik Gmbh | Verfahren zum Herstellen eines einen Preßabschnitt aufweisenden Werkstücks und Vorrichtung zur Durchführung des Verfahrens |
US5425286A (en) * | 1993-04-09 | 1995-06-20 | Laue; Charles E. | Two piece pedal rod and method of making same |
US5606790A (en) * | 1993-04-09 | 1997-03-04 | Charles E. Laue | Method of making a two piece pedal rod |
CH690565A5 (de) * | 1995-04-10 | 2000-10-31 | Feinstanz Ag | Verfahren zur Herstellung von Getriebebauteilen mit Zähnen mit Dachform und Hinterschnitt. |
ATE189142T1 (de) * | 1995-10-31 | 2000-02-15 | Colfor Manufacturing Inc | Vorrichtung und verfahren zum schmieden eines endabmessungsnahen ritzels |
DE19624774C2 (de) * | 1996-06-21 | 2000-06-08 | Blw Praezisionsschmiede Gmbh | Kupplungsverzahnung in einem Schaltgetriebe |
JP4350300B2 (ja) * | 1997-08-13 | 2009-10-21 | ヒルシュフォーゲル ウムフォルムテクニク ゲーエムベーハー | シフトギアホイールの製造方法、その方法を実施する装置並びにその方法で製造されたシフトギアホイール |
DE19744639B4 (de) * | 1997-08-13 | 2007-03-01 | Hirschvogel Umformtechnik Gmbh | Verfahren zum Herstellen eines Schaltzahnrades, Vorrichtung zur Durchführung des Verfahrens und nach dem Verfahren hergestelltes Schaltzahnrad |
DE19820654B4 (de) * | 1998-05-08 | 2006-11-23 | Schaeffler Kg | Schiebemuffe einer Synchronisiereinheit für Schaltgetriebe |
DE10021088A1 (de) * | 2000-04-28 | 2001-11-08 | Johann Hay Gmbh & Co Kg Automo | Schiebemuffe für ein Schaltgetriebe und Verfahren zu deren Herstellung |
EP2508274B1 (de) * | 2011-04-05 | 2013-07-17 | Feintool Intellectual Property AG | Verfahren und Vorrichtung zum Erhöhen des Traganteils eines Feinschneidteils mit einem Zahn, Zahnabschnitt o. dgl. |
DE102011110169B4 (de) * | 2011-08-13 | 2022-10-13 | Volkswagen Aktiengesellschaft | Verfahren zur Herstellung eines Schaltrads für ein Schaltgetriebe |
DE102011114504A1 (de) * | 2011-09-29 | 2013-04-04 | Sona Blw Präzisionsschmiede Gmbh | Verfahren und Vorrichtung zur Herstellung eines Gangrads mit Kurzverzahnung |
US9126258B2 (en) | 2013-02-28 | 2015-09-08 | Robert Rottinghaus | Unitary connector pin formed by two-stage cold heading die |
DE102013016048B3 (de) * | 2013-09-27 | 2015-02-05 | Sona Blw Präzisionsschmiede Gmbh | Verfahren zur Herstellung eines Getriebeschaltrads durch Umformen |
CN105387096A (zh) * | 2015-12-18 | 2016-03-09 | 天津天海同步科技有限公司 | 一种同步器齿套及其倒锥齿形的优化方法 |
DE102018117368A1 (de) * | 2017-07-21 | 2019-01-24 | Jtekt Corporation | Bearbeitungsgerät und bearbeitungsverfahren |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH415247A (de) * | 1963-04-24 | 1966-06-15 | Bayerisches Leichtmetallwerk K | Verfahren und Einrichtung zur Erzeugung von vorzugsweise mittigen Tragbildern an Zahnflanken konischer Zahnräder |
DE2040413C3 (de) * | 1969-08-15 | 1974-04-11 | Toyota Jidosha Kogyo K.K., Toyota, Aichi (Japan) | Verfahren zur Kaltherstellung des Keilzahnkranzes eines Schaltgetriebes für ein Kraftfahrzeug |
US3688549A (en) * | 1970-08-14 | 1972-09-05 | Toyota Motor Co Ltd | Process for cold plastic forming of spaced tooth-like projections on a ring or similarly shaped member |
JPS4714696U (xx) * | 1971-03-19 | 1972-10-20 | ||
JPS4911543A (xx) * | 1972-06-01 | 1974-02-01 | ||
DD107219A1 (xx) * | 1973-11-01 | 1974-07-20 | ||
DE3134857C2 (de) * | 1981-09-03 | 1985-11-21 | Bayerisches Leichtmetallwerk Graf Blücher von Wahlstatt GmbH & Co KG, 8000 München | Verfahren zum Herstellen von Kupplungsteilen |
JPS58120433A (ja) * | 1982-01-12 | 1983-07-18 | Nissan Motor Co Ltd | クラツチギアの製造方法 |
SU1058699A1 (ru) * | 1982-07-09 | 1983-12-07 | Институт проблем надежности и долговечности машин АН БССР | Инструмент дл упрочнени впадин зубчатых колес |
-
1984
- 1984-07-24 DE DE3427156A patent/DE3427156C2/de not_active Expired
-
1985
- 1985-07-08 BR BR8506856A patent/BR8506856A/pt not_active IP Right Cessation
- 1985-07-08 DE DE8585903281T patent/DE3562319D1/de not_active Expired
- 1985-07-08 HU HU853610A patent/HU198139B/hu unknown
- 1985-07-08 EP EP85903281A patent/EP0189447B1/de not_active Expired
- 1985-07-08 JP JP60503154A patent/JPS61502736A/ja active Granted
- 1985-07-08 WO PCT/EP1985/000335 patent/WO1986000838A1/de active IP Right Grant
- 1985-07-08 US US06/857,744 patent/US4700446A/en not_active Expired - Lifetime
- 1985-07-19 IN IN539/CAL/85A patent/IN164593B/en unknown
- 1985-07-22 ZA ZA855513A patent/ZA855513B/xx unknown
- 1985-07-23 ES ES545490A patent/ES8701549A1/es not_active Expired
- 1985-07-23 IL IL75883A patent/IL75883A/xx not_active IP Right Cessation
- 1985-07-23 YU YU1210/85A patent/YU45265B/xx unknown
- 1985-07-24 CA CA000487439A patent/CA1249458A/en not_active Expired
- 1985-07-24 CS CS855464A patent/CS259530B2/cs not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011111216A1 (de) | 2011-08-20 | 2013-02-21 | Sona Blw Präzisionsschmiede Gmbh | Synchronring |
EP2561938A1 (de) | 2011-08-20 | 2013-02-27 | SONA BLW Präzisionsschmiede GmbH | Verfahren zum Herstellen eines Synchronrings |
DE102011088864A1 (de) | 2011-12-16 | 2013-06-20 | Cdp Bharat Forge Gmbh | Kaltkalibrierpresse für Monoblockschalträder mit einbaufertiger Kupplungsverzahnung |
EP3273084B1 (de) | 2016-07-22 | 2022-03-30 | Diehl Metall Stiftung & Co. KG | Synchronring |
Also Published As
Publication number | Publication date |
---|---|
IN164593B (xx) | 1989-04-15 |
DE3427156A1 (de) | 1986-02-06 |
HUT43798A (en) | 1987-12-28 |
YU121085A (en) | 1988-04-30 |
CS259530B2 (en) | 1988-10-14 |
IL75883A (en) | 1987-10-20 |
JPS61502736A (ja) | 1986-11-27 |
US4700446A (en) | 1987-10-20 |
DE3427156C2 (de) | 1986-07-17 |
IL75883A0 (en) | 1985-12-31 |
JPH035251B2 (xx) | 1991-01-25 |
ES545490A0 (es) | 1986-12-16 |
CA1249458A (en) | 1989-01-31 |
EP0189447A1 (de) | 1986-08-06 |
ES8701549A1 (es) | 1986-12-16 |
YU45265B (en) | 1992-05-28 |
WO1986000838A1 (fr) | 1986-02-13 |
HU198139B (en) | 1989-08-28 |
ZA855513B (en) | 1986-03-26 |
BR8506856A (pt) | 1986-09-23 |
DE3562319D1 (en) | 1988-06-01 |
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