JPS5564940A - Production of bolt blank with claw by hot heading method - Google Patents

Production of bolt blank with claw by hot heading method

Info

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
Application number
JP13638178A
Other languages
Japanese (ja)
Inventor
Sadao Imanishi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP13638178A priority Critical patent/JPS5564940A/en
Publication of JPS5564940A publication Critical patent/JPS5564940A/en
Pending legal-status Critical Current

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  • 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
JP13638178A 1978-11-02 1978-11-02 Production of bolt blank with claw by hot heading method Pending JPS5564940A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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