JPS5564940A - Production of bolt blank with claw by hot heading method - Google Patents
Production of bolt blank with claw by hot heading methodInfo
- Publication number
- JPS5564940A JPS5564940A JP13638178A JP13638178A JPS5564940A JP S5564940 A JPS5564940 A JP S5564940A JP 13638178 A JP13638178 A JP 13638178A JP 13638178 A JP13638178 A JP 13638178A JP S5564940 A JPS5564940 A JP S5564940A
- Authority
- JP
- Japan
- Prior art keywords
- claw
- head
- blank
- burrs
- die
- 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.)
- Pending
Links
Landscapes
- Forging (AREA)
Abstract
PURPOSE: To let material make face contact to the flat face of a lower die, eliminate burrs at the claw part and eliminate the waste of material by communicating burr- and claw-forming space in the lower part of the head forming space of an upper die.
CONSTITUTION: With the red hot end part of a blank 11 being positioned to the upper side, it is inserted into the insertion hole 39 of a lower die 31 and is moved to the side of an upper die 30 and is then die forged. Then, a head 12 is formed in the blank 11 and the flat perpendicular face formed with the claw-forming space 36 of a bulge part 35 makes face contact to the flat perpendicular face of a lower die step part 38. At this time, part of the blank 11 cannot escape into the portion between this butt part. Hence, the claw 13 extending from part of the outside circumference of the head 12 to the axial direction is formed and at the same time the burrs 14 protruding laterally are formed around the head 12. When the burrs 14 are removed in the trimming process after this, the bolt bland is obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13638178A JPS5564940A (en) | 1978-11-02 | 1978-11-02 | Production of bolt blank with claw by hot heading method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13638178A JPS5564940A (en) | 1978-11-02 | 1978-11-02 | Production of bolt blank with claw by hot heading method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5564940A true JPS5564940A (en) | 1980-05-16 |
Family
ID=15173815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13638178A Pending JPS5564940A (en) | 1978-11-02 | 1978-11-02 | Production of bolt blank with claw by hot heading method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5564940A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103009011A (en) * | 2012-12-28 | 2013-04-03 | 贵州精立航太科技有限公司 | Processing method for stainless steel high-strength bolt |
CN104454870A (en) * | 2014-12-22 | 2015-03-25 | 贵州精立航太科技有限公司 | High-strength rivet and manufacturing method thereof |
-
1978
- 1978-11-02 JP JP13638178A patent/JPS5564940A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103009011A (en) * | 2012-12-28 | 2013-04-03 | 贵州精立航太科技有限公司 | Processing method for stainless steel high-strength bolt |
CN104454870A (en) * | 2014-12-22 | 2015-03-25 | 贵州精立航太科技有限公司 | High-strength rivet and manufacturing method thereof |
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