GB1373547A - Methods of manufacturing helical gear blanks by cold extrusion process - Google Patents
Methods of manufacturing helical gear blanks by cold extrusion processInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Extrusion Of Metal (AREA)
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.
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)
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)
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 |
-
1971
- 1971-11-18 GB GB5366071A patent/GB1373547A/en not_active Expired
- 1971-11-22 DE DE19712157874 patent/DE2157874B2/en not_active Ceased
- 1971-11-23 IT IT3148271A patent/IT940787B/en active
-
1977
- 1977-06-14 JP JP7678877U patent/JPS544505Y2/ja not_active Expired
Cited By (2)
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 |
JPS544505Y2 (en) | 1979-02-27 |
DE2157874B2 (en) | 1975-04-24 |
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 |