JPS56111540A - Production of bolt of long free upseeting length - Google Patents

Production of bolt of long free upseeting length

Info

Publication number
JPS56111540A
JPS56111540A JP1488680A JP1488680A JPS56111540A JP S56111540 A JPS56111540 A JP S56111540A JP 1488680 A JP1488680 A JP 1488680A JP 1488680 A JP1488680 A JP 1488680A JP S56111540 A JPS56111540 A JP S56111540A
Authority
JP
Japan
Prior art keywords
length
bolt
work
diameter
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
JP1488680A
Other languages
Japanese (ja)
Inventor
Yoshio Imai
Katsumi Koizumi
Hidetoshi Imanaga
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.)
Sannohashi Seisakusho KK
Original Assignee
Sannohashi Seisakusho KK
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 Sannohashi Seisakusho KK filed Critical Sannohashi Seisakusho KK
Priority to JP1488680A priority Critical patent/JPS56111540A/en
Publication of JPS56111540A publication Critical patent/JPS56111540A/en
Pending legal-status Critical Current

Links

Landscapes

  • Forging (AREA)

Abstract

PURPOSE: To produce the titled bolt by specifying the ratio of the free upsetting length and diameter of a barlike body thereby preventing the folding and crazing of the material owing to buckling.
CONSTITUTION: The 1st work 15 which is formed by a primary working is positioned toward the hole 17 of a secondary die 16, and a punch 21 is approached to the die 16. The small-duameter part 14 of the work 15 is drawn in a working hole 17, whereby the screw stem 30 of the bolt is formed. The length L from the end (n) on the tapered cylinder 25 side of a cylindrical part 26 up to the end face of the die 16 is a section where the work does not contact the peripheral wall surface, that is, a free upsetting length. The ratio L/d1 between this length L and the diameter d1 is regulated to ≤4.8. When the punch 21 is moved, a collar 32 is formed in the part in contact with the screw stem 30 by a large-diameter part 22, a conical stem 34 in the position corresponding to the tapered cylinder 25, and a cylinder 35 in the position corresponding to the cylindrical part 26, respectively. Thereby, the work is formed in ordery flow without causing folding in any part.
COPYRIGHT: (C)1981,JPO&Japio
JP1488680A 1980-02-12 1980-02-12 Production of bolt of long free upseeting length Pending JPS56111540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1488680A JPS56111540A (en) 1980-02-12 1980-02-12 Production of bolt of long free upseeting length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1488680A JPS56111540A (en) 1980-02-12 1980-02-12 Production of bolt of long free upseeting length

Publications (1)

Publication Number Publication Date
JPS56111540A true JPS56111540A (en) 1981-09-03

Family

ID=11873490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1488680A Pending JPS56111540A (en) 1980-02-12 1980-02-12 Production of bolt of long free upseeting length

Country Status (1)

Country Link
JP (1) JPS56111540A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009120821A2 (en) * 2008-03-27 2009-10-01 National Machinery Llc Method and tooling for headed pilot pointed bolts
CN107552700A (en) * 2017-09-13 2018-01-09 中北大学 An a kind of upsetting formation method of the big specification strand of larger ratio of height to diameter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009120821A2 (en) * 2008-03-27 2009-10-01 National Machinery Llc Method and tooling for headed pilot pointed bolts
WO2009120821A3 (en) * 2008-03-27 2010-01-07 National Machinery Llc Method and tooling for headed pilot pointed bolts
US8485013B2 (en) 2008-03-27 2013-07-16 National Machinery Llc Method and tooling for headed pilot pointed bolts
CN107552700A (en) * 2017-09-13 2018-01-09 中北大学 An a kind of upsetting formation method of the big specification strand of larger ratio of height to diameter

Similar Documents

Publication Publication Date Title
GB941127A (en) Improved method and device for producing hollow bodies from thermoplastic synthetic material
JPS56111540A (en) Production of bolt of long free upseeting length
JPS57177843A (en) Manufacture of tire of equal speed universal joint
ES483211A1 (en) Metal tube and apparatus and method for manufacturing the same
ES295913U (en) Screw with flow passage
GB1337195A (en) Method of tube drawing and die arrangement for application of this method
JPS5623324A (en) Preparation of roller
GB1052722A (en)
US3380285A (en) Swedging tool
US2376072A (en) Rivet operable by means of hammer blows
ES2090882T3 (en) METHOD FOR BUILDING A TUBULAR BODY WITH A DEFORMABLE INTERNAL SKIRT.
JPS56128629A (en) End part working method for pipe
US3895757A (en) Safety tip air nozzle
JPS57177844A (en) Manufacture of tire of equal speed universal joint
JPS54123560A (en) Dies for extrusion working
JPS55141348A (en) Production of product having tooth profile and its apparatus
BG50381A3 (en) Tool for shaping the upper part of a plastic vessel
JPS55128315A (en) Cold and warm pressure welding and extruding method
JPS5639131A (en) Manufacture of coaxial reducing pipe
JPS5537344A (en) Method of working pipe end
JPS561241A (en) Production of screw-connected pipe
JPS57103741A (en) Method for stepping constriction work of pipe material
JPS57134231A (en) Formation for conical part
JPS5797834A (en) Manufacture of nozzle body
JPS5540374A (en) Oil hydraulic cylinder device