JPS5739054A - Forging method for forming tooth form on outer circumference of ring-shaped blank - Google Patents
Forging method for forming tooth form on outer circumference of ring-shaped blankInfo
- Publication number
- JPS5739054A JPS5739054A JP11494380A JP11494380A JPS5739054A JP S5739054 A JPS5739054 A JP S5739054A JP 11494380 A JP11494380 A JP 11494380A JP 11494380 A JP11494380 A JP 11494380A JP S5739054 A JPS5739054 A JP S5739054A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- tooth form
- blank
- outer circumference
- shaped blank
- 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
Links
Landscapes
- Forging (AREA)
Abstract
PURPOSE: To manufacture a ring gear of high accuracy by restraining upper and lower sides of a ring-shaped blank inserted into inside of tooth form of a die and forming a complete tooth by expanding with a punch that has a gentle cylindrical tapered face on the outer circumference using wedging action.
CONSTITUTION: A ring-shaped blank 30 having a faced part 32 is inserted into inner circumference of a tooth form 19 of a die 18. An upper mold ring 38 is lowered to bring the end of the shoulder terminal part 28 into contact with the upper surface of the blank 30. Then, a punch 26 is lowered and a guide part 27 is advanced to the inner circumference of the blank 30. A conical surface of the guide part 27 having a truncated circular form works as a wedge and expands the diameter of the ring-shaped blank 30 from inner circumference side to radial direction, and the outer circumference of the blank 30 is thrusted against the tooth form 19 of the die 18. The outer circumference side is pushed into a space in the tooth form upper side and lower side of which are closed by the end of shoulder terminal part 28 and the surface of mold bottom 16. By this way, the shape of ring gear is nearly completed. The upper mold ring 38 and the punch 26 are raised and the formed ring gear is pushed up by raising a knock out ring 15.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11494380A JPS5739054A (en) | 1980-08-20 | 1980-08-20 | Forging method for forming tooth form on outer circumference of ring-shaped blank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11494380A JPS5739054A (en) | 1980-08-20 | 1980-08-20 | Forging method for forming tooth form on outer circumference of ring-shaped blank |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5739054A true JPS5739054A (en) | 1982-03-04 |
JPS6153142B2 JPS6153142B2 (en) | 1986-11-17 |
Family
ID=14650485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11494380A Granted JPS5739054A (en) | 1980-08-20 | 1980-08-20 | Forging method for forming tooth form on outer circumference of ring-shaped blank |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5739054A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5018272A (en) * | 1988-04-05 | 1991-05-28 | Roth Technik Gmbh | Method of making an exhaust catalyst by securing wire mesh onto an arbor |
JP2007203376A (en) * | 2007-05-15 | 2007-08-16 | Kondoo Seikoo Kk | Die for forming tooth form |
-
1980
- 1980-08-20 JP JP11494380A patent/JPS5739054A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5018272A (en) * | 1988-04-05 | 1991-05-28 | Roth Technik Gmbh | Method of making an exhaust catalyst by securing wire mesh onto an arbor |
JP2007203376A (en) * | 2007-05-15 | 2007-08-16 | Kondoo Seikoo Kk | Die for forming tooth form |
Also Published As
Publication number | Publication date |
---|---|
JPS6153142B2 (en) | 1986-11-17 |
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