EP0073985A2 - Procédé de forgeage - Google Patents

Procédé de forgeage Download PDF

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Publication number
EP0073985A2
EP0073985A2 EP82107610A EP82107610A EP0073985A2 EP 0073985 A2 EP0073985 A2 EP 0073985A2 EP 82107610 A EP82107610 A EP 82107610A EP 82107610 A EP82107610 A EP 82107610A EP 0073985 A2 EP0073985 A2 EP 0073985A2
Authority
EP
European Patent Office
Prior art keywords
coupling
head
die
forging
calibration
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
EP82107610A
Other languages
German (de)
English (en)
Other versions
EP0073985A3 (en
EP0073985B1 (fr
Inventor
Manfred Eisen
Georg Tauschek
Werner Spielmann
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.)
BLW Praezisionsschmiede GmbH
Original Assignee
Bayerische Leichtmetallwerk Graf Bluecher Von Wahlstatt 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=6140754&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0073985(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bayerische Leichtmetallwerk Graf Bluecher Von Wahlstatt KG filed Critical Bayerische Leichtmetallwerk Graf Bluecher Von Wahlstatt KG
Priority to AT82107610T priority Critical patent/ATE11647T1/de
Publication of EP0073985A2 publication Critical patent/EP0073985A2/fr
Publication of EP0073985A3 publication Critical patent/EP0073985A3/de
Application granted granted Critical
Publication of EP0073985B1 publication Critical patent/EP0073985B1/fr
Expired legal-status Critical Current

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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
    • 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
    • B21J5/08—Upsetting
    • 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
    • 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
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints

Definitions

  • the invention relates to a method for the precision forging of forgings with at least one coupling surface serving for power transmission in cooperation with a counterpart, in particular claws or pockets having coupling parts or synchronizing parts with short teeth for manual transmissions, in which the parts are first forged and then cold calibrated .
  • the invention relates to workpieces produced by the above method, namely coupling bodies for dog clutches, synchronous coupling bodies for manual transmissions or the like, coupling parts having short teeth or claws or pockets, and also ratchet bodies, gear; lenkwellenkör he p etc.
  • the coupling claws or teeth have been adopted Form short gears with trailing flanks.
  • the present invention is based on the object of designing a method of the type mentioned at the outset in such a way that workpieces, in particular coupling parts, can be produced with a negative backing of the load-transmitting coupling surface.
  • This object is achieved in that, during the forging, parallel to the impact direction coupling surfaces with the adjacent head surfaces increasing allowance at least in the respective common edge of this Surfaces adjoining the edge area are produced and that during the cold calibration the head surfaces are forged precisely, in such a way that each finished coupling surface runs obliquely towards the head surface widened by the calibration.
  • the backing of the clutch surfaces up to about 5 degrees.
  • the calibration stroke with free, i.e. H. without any support from the die shape, deformation of the coupling surfaces until reaching an inclined position in the sense of the desired undercut.
  • the material flow is first triggered by the measurement in the edge area before the pressure is distributed over the entire head surface. In this way, any convex shape of the coupling surfaces can be reliably avoided.
  • the opposing tooth flanks of a tooth or claw forming the coupling surfaces are each negatively positioned in such a way that the tooth gaps widen towards the tooth base.
  • the im Back area opposite surface can be formed straight or even with a positive position.
  • the forged parts are only supported by the die during cold calibration between two die surfaces that are parallel to the direction of impact and run transversely to the coupling surfaces.
  • the widening of the tooth tip surfaces is limited by supporting surfaces of the die arranged at a corresponding distance from the preform. It is sufficient if the support surfaces are only available within the radius described by the head surfaces.
  • the dimensioning of the allowance is decisive for the angle reached by the positioning, as well as the flat shape of the coupling surface.
  • the oversize volume per coupling surface is dimensioned according to its selected rear position or inclined position with respect to the head surface.
  • the distribution of the allowance has a maximum in or near the coupling surface along a section running transversely to the coupling surface.
  • the distribution of the allowance describes a course which decreases in a straight line or concave fashion in the edge region of the head surface adjoining the coupling surface.
  • the preferred application of the method according to the invention relates to claw couplings, the load-transmitting flanks of the claws or pockets of the two interacting coupling parts corresponding to the coupling surfaces, with every or every second flank being placed behind.
  • the method according to the invention can be applied to the short teeth known per se with pointed teeth, the undercuts previously produced by subsequent rolling or eroding being produced by the method according to the invention. This is not only suitable for producing undercuts on claws or pockets, but also on involute gears, both external and internal gears.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Measurement Of Force In General (AREA)
EP82107610A 1981-09-03 1982-08-20 Procédé de forgeage Expired EP0073985B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82107610T ATE11647T1 (de) 1981-09-03 1982-08-20 Schmiedeverfahren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3134857 1981-09-03
DE3134857A DE3134857C2 (de) 1981-09-03 1981-09-03 Verfahren zum Herstellen von Kupplungsteilen

Publications (3)

Publication Number Publication Date
EP0073985A2 true EP0073985A2 (fr) 1983-03-16
EP0073985A3 EP0073985A3 (en) 1983-08-24
EP0073985B1 EP0073985B1 (fr) 1985-02-06

Family

ID=6140754

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107610A Expired EP0073985B1 (fr) 1981-09-03 1982-08-20 Procédé de forgeage

Country Status (7)

Country Link
US (1) US5870923A (fr)
EP (1) EP0073985B1 (fr)
JP (1) JPS5841645A (fr)
AT (1) ATE11647T1 (fr)
CA (1) CA1179871A (fr)
DE (2) DE3134857C2 (fr)
GB (1) GB2106435B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19624772A1 (de) * 1996-06-21 1998-01-02 Blw Praezisionsschmiede Gmbh Klauenverzahnung für Schaltgetriebe oder dergleichen

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3134857C2 (de) * 1981-09-03 1985-11-21 Bayerisches Leichtmetallwerk Graf Blücher von Wahlstatt GmbH & Co KG, 8000 München Verfahren zum Herstellen von Kupplungsteilen
DE3427156C2 (de) * 1984-07-24 1986-07-17 Bayerisches Leichtmetallwerk Graf Blücher von Wahlstatt GmbH & Co KG, 8000 München Verfahren zum Herstellen eines Synchronteils mit hinterschnittenen Zähnen
DE19624774C2 (de) * 1996-06-21 2000-06-08 Blw Praezisionsschmiede Gmbh Kupplungsverzahnung in einem Schaltgetriebe
US7484611B2 (en) * 2004-05-27 2009-02-03 O-Oka Corporation Speed change gear with dog clutch pawl, and method and device of manufacturing the same
JP4502939B2 (ja) * 2005-11-22 2010-07-14 本田技研工業株式会社 ドッグクラッチ
DE102011088864A1 (de) 2011-12-16 2013-06-20 Cdp Bharat Forge Gmbh Kaltkalibrierpresse für Monoblockschalträder mit einbaufertiger Kupplungsverzahnung
US9120143B2 (en) * 2013-01-15 2015-09-01 National Machinery Llc Cut-off end surface improvement
CN114921683B (zh) * 2022-05-29 2023-03-28 浙江倍泽新材料科技有限公司 一种钟形罩用自加压钢铜双金属及其节能型制造方法

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250230B (fr) * 1967-09-14
US600994A (en) * 1898-03-22 James w
US874448A (en) * 1907-12-24 John R Keim Mills Inc Method of making gear-wheels.
DE356109C (de) * 1922-07-17 Hermann Budde Verfahren zur Herstellung von Grundringen fuer Vollgummireifen mit unterschnittenen flachen Nuten
US925028A (en) * 1901-07-16 1909-06-15 American Typographic Corp Method of making ribbed plates.
US822983A (en) * 1904-11-14 1906-06-12 Richard Rhoda Valve.
US1543608A (en) * 1924-08-28 1925-06-23 Leidecker Tool Company Method of making spiral auger stems, bits, and substitutes
US1597198A (en) * 1925-09-15 1926-08-24 Howell Edward Neverson Automatic clutch-disconnecting means
US1866315A (en) * 1930-07-18 1932-07-05 M B Skinner Co Method of making a cutter
US2843927A (en) * 1955-03-03 1958-07-22 Arthur J Stock Method of manufacture of gear teeth
GB1054317A (fr) * 1962-12-19
CH415247A (de) * 1963-04-24 1966-06-15 Bayerisches Leichtmetallwerk K Verfahren und Einrichtung zur Erzeugung von vorzugsweise mittigen Tragbildern an Zahnflanken konischer Zahnräder
DE1265520B (de) * 1964-03-25 1968-04-04 Elmeg Hydrodynamischer Drehmomentwandler
DE1483707B2 (de) * 1965-07-20 1969-11-06 Sintermetallwerk Krebsöge GmbH, 5608 Krebsöge Verfahren und Vorrichtung zum Entgraten von Sinterformteilen
US3498100A (en) * 1968-02-13 1970-03-03 Arthur Gudish Process for manufacturing retainer rings
US3739664A (en) * 1971-10-14 1973-06-19 J Swanstrom Tools and machine parts and methods from inverse draft forging
US3780840A (en) * 1972-05-19 1973-12-25 Carter H Gear selector for a transmission
DD107219A1 (fr) * 1973-11-01 1974-07-20
PL93033B1 (fr) * 1974-01-21 1977-05-30 Politechnika Warszawska
US3987539A (en) * 1974-01-31 1976-10-26 Consolidated Foods Corporation Method of making a molded commutator
US4362043A (en) * 1975-09-17 1982-12-07 Hanson Thomas A Pipe unions
NL174329C (nl) * 1975-12-08 1984-06-01 Marinus Johannes Smits Matrijs voor het vervaardigen van vertandingen.
ES451569A1 (es) * 1976-09-16 1977-10-16 Bendiberica Sa Procedimiento para la fabricacion de rotores para valvulas rotativas de servodireccion de vehiculos automoviles.
CA1105661A (fr) * 1978-10-02 1981-07-28 Microdot Inc. Methode de faconnage d'un ecrou etancheisant
US4216575A (en) * 1979-02-01 1980-08-12 Noranda Mines Limited Method of reforming the fins of a finned tube
DE3134857C2 (de) * 1981-09-03 1985-11-21 Bayerisches Leichtmetallwerk Graf Blücher von Wahlstatt GmbH & Co KG, 8000 München Verfahren zum Herstellen von Kupplungsteilen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19624772A1 (de) * 1996-06-21 1998-01-02 Blw Praezisionsschmiede Gmbh Klauenverzahnung für Schaltgetriebe oder dergleichen
US6044951A (en) * 1996-06-21 2000-04-04 Blw Praezisionsschmiede Gmbh Claw toothing for a gearbox or the like
DE19624772C2 (de) * 1996-06-21 2000-06-29 Blw Praezisionsschmiede Gmbh Klauenverzahnung für Schaltgetriebe oder dergleichen

Also Published As

Publication number Publication date
DE3262223D1 (en) 1985-03-21
GB2106435B (en) 1985-08-14
GB2106435A (en) 1983-04-13
ATE11647T1 (de) 1985-02-15
JPH0134696B2 (fr) 1989-07-20
EP0073985A3 (en) 1983-08-24
DE3134857C2 (de) 1985-11-21
JPS5841645A (ja) 1983-03-10
CA1179871A (fr) 1984-12-27
DE3134857A1 (de) 1983-03-17
US5870923A (en) 1999-02-16
EP0073985B1 (fr) 1985-02-06

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