JPS57134232A - Method and apparatus for manufacturing bolt having bulge at tip - Google Patents

Method and apparatus for manufacturing bolt having bulge at tip

Info

Publication number
JPS57134232A
JPS57134232A JP1997981A JP1997981A JPS57134232A JP S57134232 A JPS57134232 A JP S57134232A JP 1997981 A JP1997981 A JP 1997981A JP 1997981 A JP1997981 A JP 1997981A JP S57134232 A JPS57134232 A JP S57134232A
Authority
JP
Japan
Prior art keywords
shank
head
tip
bulge
upsetting
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
JP1997981A
Other languages
English (en)
Other versions
JPS58934B2 (ja
Inventor
Kenji Deki
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 JP1997981A priority Critical patent/JPS58934B2/ja
Publication of JPS57134232A publication Critical patent/JPS57134232A/ja
Publication of JPS58934B2 publication Critical patent/JPS58934B2/ja
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
JP1997981A 1981-02-12 1981-02-12 先端に膨らみをもったボルトの製造方法及び装置 Expired JPS58934B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1997981A JPS58934B2 (ja) 1981-02-12 1981-02-12 先端に膨らみをもったボルトの製造方法及び装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1997981A JPS58934B2 (ja) 1981-02-12 1981-02-12 先端に膨らみをもったボルトの製造方法及び装置

Publications (2)

Publication Number Publication Date
JPS57134232A true JPS57134232A (en) 1982-08-19
JPS58934B2 JPS58934B2 (ja) 1983-01-08

Family

ID=12014296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1997981A Expired JPS58934B2 (ja) 1981-02-12 1981-02-12 先端に膨らみをもったボルトの製造方法及び装置

Country Status (1)

Country Link
JP (1) JPS58934B2 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005023456A1 (en) * 2003-09-09 2005-03-17 Amafa Service Srl Method for the cold extrusion of bolts, in particular for fastening the cutting blades of mowers or the like
CN103909202A (zh) * 2012-12-29 2014-07-09 宾科汽车紧固件（昆山）有限公司 一种螺钉冷镦装置及其冷镦工艺
CN109590381A (zh) * 2018-10-12 2019-04-09 江西昌河航空工业有限公司 一种特形螺钉内六角挤压装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110102699A (zh) * 2019-04-30 2019-08-09 山东九佳紧固件股份有限公司 机头加注口螺钉冷镦成型加工模具及其加工工艺

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005023456A1 (en) * 2003-09-09 2005-03-17 Amafa Service Srl Method for the cold extrusion of bolts, in particular for fastening the cutting blades of mowers or the like
CN103909202A (zh) * 2012-12-29 2014-07-09 宾科汽车紧固件（昆山）有限公司 一种螺钉冷镦装置及其冷镦工艺
CN109590381A (zh) * 2018-10-12 2019-04-09 江西昌河航空工业有限公司 一种特形螺钉内六角挤压装置

Also Published As

Publication number Publication date
JPS58934B2 (ja) 1983-01-08

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