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 blank

Info

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
Application number
JP11494380A
Other languages
Japanese (ja)
Other versions
JPS6153142B2 (en
Inventor
Nagao Suzuki
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.)
Musashi Seimitsu Industry Co Ltd
Original Assignee
Musashi Seimitsu Industry Co Ltd
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
Application filed by Musashi Seimitsu Industry Co Ltd filed Critical Musashi Seimitsu Industry Co Ltd
Priority to JP11494380A priority Critical patent/JPS5739054A/en
Publication of JPS5739054A publication Critical patent/JPS5739054A/en
Publication of JPS6153142B2 publication Critical patent/JPS6153142B2/ja
Granted legal-status Critical Current

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
JP11494380A 1980-08-20 1980-08-20 Forging method for forming tooth form on outer circumference of ring-shaped blank Granted JPS5739054A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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