GB1373547A - Methods of manufacturing helical gear blanks by cold extrusion process - Google Patents

Methods of manufacturing helical gear blanks by cold extrusion process

Info

Publication number
GB1373547A
GB1373547A GB5366071A GB5366071A GB1373547A GB 1373547 A GB1373547 A GB 1373547A GB 5366071 A GB5366071 A GB 5366071A GB 5366071 A GB5366071 A GB 5366071A GB 1373547 A GB1373547 A GB 1373547A
Authority
GB
United Kingdom
Prior art keywords
die
billet
teeth
stage
punch
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
GB5366071A
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.)
Automobiles Peugeot SA
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Automobiles Peugeot SA
Renault SAS
Regie Nationale des Usines Renault
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
Priority claimed from FR7042073A external-priority patent/FR2115533A5/fr
Priority claimed from FR7139420A external-priority patent/FR2159569A6/fr
Application filed by Automobiles Peugeot SA, Renault SAS, Regie Nationale des Usines Renault filed Critical Automobiles Peugeot SA
Publication of GB1373547A publication Critical patent/GB1373547A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B21K1/305—Making machine elements wheels; discs with gear-teeth helical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/10—Making finned tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding
    • B21C25/10—Making tools by operations not covered by a single other subclass
    • 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
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/20—Making working faces of dies, either recessed or outstanding

Abstract

1373547 Extruding; making gears; making dies REGIE RATIONALE DES USINES RENAULT and AUTOMOBILES PEUGEOT 18 Nov 1971 [24 Nov 1970 3 Nov 1971] 53660/71 Headings B3P and B3A A helical gear blank is produced by cold extruding a billet 1 through a die 2 using a punch 11 which is mounted for free rotation, the die being formed with a set of helically toothed stages in which the tooth depth increases from stage to stage. Thus the billet is free to rotate to follow the teeth of the die stages. The die teeth taper in depth towards the inlet and outlet of each stage so that the extruded billet is released by each stage before entering the next stage. The billets are extruded successively and each billet pushes the preceding billet through the die. The punch is mounted by roller bearings 19-21 on a plate 15 connected to a movable crosshead 16. The die is arranged to contact the billet surface at the portion which forms the top of the gear teeth as the billet enter the die, Fig. 3 (not shown). The die, which is preferably made of tungsten carbide, may comprise three die elements 29, 30, 33, Fig. 4, clamped between rings 3, 3<SP>1</SP> and each having double tapered teeth with a neck 31. The extruded billet may have its teeth finished by rolling and be centrally bored or alternatively hollow billets may be used and the punch 11 then has a central stem. The helix pitch of the teeth can be checked by measuring the rotation of the punch for a given axial movement. The teeth are formed in the die by electroerosion followed by grinding.
GB5366071A 1970-11-24 1971-11-18 Methods of manufacturing helical gear blanks by cold extrusion process Expired GB1373547A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7042073A FR2115533A5 (en) 1970-11-24 1970-11-24
FR7139420A FR2159569A6 (en) 1971-11-03 1971-11-03

Publications (1)

Publication Number Publication Date
GB1373547A true GB1373547A (en) 1974-11-13

Family

ID=26216068

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5366071A Expired GB1373547A (en) 1970-11-24 1971-11-18 Methods of manufacturing helical gear blanks by cold extrusion process

Country Status (4)

Country Link
JP (1) JPS544505Y2 (en)
DE (1) DE2157874B2 (en)
GB (1) GB1373547A (en)
IT (1) IT940787B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3718884A1 (en) * 1987-06-05 1988-12-29 K Lange Forschungsgesellschaft Method and tools for the cold, warm and hot transversal extrusion of workpieces with accurate teeth from metal, preferably steel
US7231799B2 (en) * 2000-11-02 2007-06-19 Forschungsgesellschaft Umformtechnik Mbh Method and device for the production of a workpiece with internal toothing, in particular a hollow wheel

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58157521A (en) * 1982-03-16 1983-09-19 Nissan Motor Co Ltd Method and apparatus for manufacturing gear
JP7099253B2 (en) * 2018-10-31 2022-07-12 トヨタ自動車株式会社 Gear forging method and forging equipment
CN114798782B (en) * 2022-05-25 2023-10-20 中北大学 Rotary extrusion forming method for magnesium alloy sheet with weak anisotropy and high strength and toughness

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3718884A1 (en) * 1987-06-05 1988-12-29 K Lange Forschungsgesellschaft Method and tools for the cold, warm and hot transversal extrusion of workpieces with accurate teeth from metal, preferably steel
US7231799B2 (en) * 2000-11-02 2007-06-19 Forschungsgesellschaft Umformtechnik Mbh Method and device for the production of a workpiece with internal toothing, in particular a hollow wheel

Also Published As

Publication number Publication date
JPS52170834U (en) 1977-12-26
DE2157874B2 (en) 1975-04-24
JPS544505Y2 (en) 1979-02-27
IT940787B (en) 1973-02-20
DE2157874A1 (en) 1972-07-13

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee