JPS5662640A - Production of bolt - Google Patents

Production of bolt

Info

Publication number
JPS5662640A
JPS5662640A JP13926579A JP13926579A JPS5662640A JP S5662640 A JPS5662640 A JP S5662640A JP 13926579 A JP13926579 A JP 13926579A JP 13926579 A JP13926579 A JP 13926579A JP S5662640 A JPS5662640 A JP S5662640A
Authority
JP
Japan
Prior art keywords
bolt
strength
flow lines
metal structure
molded
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
JP13926579A
Other languages
Japanese (ja)
Other versions
JPS574422B2 (en
Inventor
Hayashi Uchimura
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 JP13926579A priority Critical patent/JPS5662640A/en
Priority to EP80301287A priority patent/EP0018230B1/en
Priority to DE8080301287T priority patent/DE3066736D1/en
Publication of JPS5662640A publication Critical patent/JPS5662640A/en
Publication of JPS574422B2 publication Critical patent/JPS574422B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Forging (AREA)

Abstract

PURPOSE: To make the flow lines of metal structure continuous and increase the strength of a neck part by providing an annular bulged part to the neck part of the bolt to be compression molded.
CONSTITUTION: A bolt 1 is compression-molded by a die 8 provided with an annular recess 7 corresponding to the bulged part 5 of the root part 4 of the part connecting the head part 2 and screw stem part 3 of the bolt 1. Then, the flow lines (b) of the metal structure of the bolt 1 continue and the structure is not broken; consequently, the strength of the compressed prt is allowed to maintain.
COPYRIGHT: (C)1981,JPO&Japio
JP13926579A 1979-04-23 1979-10-30 Production of bolt Granted JPS5662640A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP13926579A JPS5662640A (en) 1979-10-30 1979-10-30 Production of bolt
EP80301287A EP0018230B1 (en) 1979-04-23 1980-04-22 Castor support shaft
DE8080301287T DE3066736D1 (en) 1979-04-23 1980-04-22 Castor support shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13926579A JPS5662640A (en) 1979-10-30 1979-10-30 Production of bolt

Publications (2)

Publication Number Publication Date
JPS5662640A true JPS5662640A (en) 1981-05-28
JPS574422B2 JPS574422B2 (en) 1982-01-26

Family

ID=15241251

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13926579A Granted JPS5662640A (en) 1979-04-23 1979-10-30 Production of bolt

Country Status (1)

Country Link
JP (1) JPS5662640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05139481A (en) * 1991-11-19 1993-06-08 Sen Kyo Cassette case

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153914A (en) * 1984-08-23 1986-03-18 Kobe Steel Ltd Improving material feed control device for ground improving machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05139481A (en) * 1991-11-19 1993-06-08 Sen Kyo Cassette case

Also Published As

Publication number Publication date
JPS574422B2 (en) 1982-01-26

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