EP0073985B1 - Schmiedeverfahren - Google Patents

Schmiedeverfahren Download PDF

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Publication number
EP0073985B1
EP0073985B1 EP82107610A EP82107610A EP0073985B1 EP 0073985 B1 EP0073985 B1 EP 0073985B1 EP 82107610 A EP82107610 A EP 82107610A EP 82107610 A EP82107610 A EP 82107610A EP 0073985 B1 EP0073985 B1 EP 0073985B1
Authority
EP
European Patent Office
Prior art keywords
faces
forging
contact surface
die
admeasurement
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
EP82107610A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0073985A2 (de
EP0073985A3 (en
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(B1) "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/de
Publication of EP0073985A3 publication Critical patent/EP0073985A3/de
Application granted granted Critical
Publication of EP0073985B1 publication Critical patent/EP0073985B1/de
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 precision forging of forgings with at least one coupling surface serving for the transmission of force in cooperation with a counterpart, in particular of coupling parts having claws or pockets or of synchronizing parts with short teeth for manual transmissions, in which the parts are first forged and then cold calibrated.
  • the coupling claws or teeth in the case of short teeth have been adopted 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 position of the load-transmitting coupling surface.
  • the backing of the coupling surfaces in a targeted manner up to approximately 5 °.
  • correct dimensioning and distribution of the dimensions any bulging of the coupling surfaces into a spherical shape is avoided, the 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 area. In this way, any convex shape of the coupling surfaces can be reliably avoided.
  • the opposing tooth flanks of a tooth or a claw forming coupling surfaces are each negatively positioned in such a way that the tooth gaps widen towards the tooth base.
  • 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 in the radius described by the head surfaces are available.
  • the dimensioning of the measurement is decisive for the angle reached by the positioning and the flat shape of the coupling surface.
  • the oversize volume per coupling surface is dimensioned in accordance with its selected rear position or inclined position with respect to the head surface.
  • the distribution of the measurement describes a course that decreases in a straight line or concave manner in the edge area 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 each or every second flank being placed behind.
  • the method according to the invention can be applied to the short teeth with pointed teeth known per se, the undercuts previously produced by subsequent rolling or eroding being produced according to the method according to the invention. This is not only suitable for producing undercuts on claws or pockets, but also on involute gears, both on the outside and on the inside.
  • a claw 1 has a convex head surface 2 after the forging, the radial flanks 3 of the claw 1 are perpendicular to the claw base surface 4.
  • a dashed line k which runs parallel to the claw base surface 4, illustrates the dimensions of the head surface 2 in front of the Cold calibration.

Landscapes

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

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 EP0073985A2 (de) 1983-03-16
EP0073985A3 EP0073985A3 (en) 1983-08-24
EP0073985B1 true EP0073985B1 (de) 1985-02-06

Family

ID=6140754

Family Applications (1)

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

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19624774C2 (de) * 1996-06-21 2000-06-08 Blw Praezisionsschmiede Gmbh Kupplungsverzahnung in einem Schaltgetriebe

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
DE19624772C2 (de) * 1996-06-21 2000-06-29 Blw Praezisionsschmiede Gmbh Klauenverzahnung für Schaltgetriebe oder dergleichen
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)

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DE1250230B (enrdf_load_stackoverflow) * 1967-09-14
US600994A (en) * 1898-03-22 James w
DE356109C (de) * 1922-07-17 Hermann Budde Verfahren zur Herstellung von Grundringen fuer Vollgummireifen mit unterschnittenen flachen Nuten
US874448A (en) * 1907-12-24 John R Keim Mills Inc Method of making gear-wheels.
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 (enrdf_load_stackoverflow) * 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 (enrdf_load_stackoverflow) * 1973-11-01 1974-07-20
PL93033B1 (enrdf_load_stackoverflow) * 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 (en) * 1978-10-02 1981-07-28 Microdot Inc. Method of making a seal nut
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19624774C2 (de) * 1996-06-21 2000-06-08 Blw Praezisionsschmiede Gmbh Kupplungsverzahnung in einem Schaltgetriebe

Also Published As

Publication number Publication date
EP0073985A2 (de) 1983-03-16
DE3134857A1 (de) 1983-03-17
JPS5841645A (ja) 1983-03-10
JPH0134696B2 (enrdf_load_stackoverflow) 1989-07-20
DE3262223D1 (en) 1985-03-21
DE3134857C2 (de) 1985-11-21
CA1179871A (en) 1984-12-27
GB2106435B (en) 1985-08-14
GB2106435A (en) 1983-04-13
ATE11647T1 (de) 1985-02-15
US5870923A (en) 1999-02-16
EP0073985A3 (en) 1983-08-24

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