JPS56109131A - Cold forging method of ball stud - Google Patents

Cold forging method of ball stud

Info

Publication number
JPS56109131A
JPS56109131A JP1027580A JP1027580A JPS56109131A JP S56109131 A JPS56109131 A JP S56109131A JP 1027580 A JP1027580 A JP 1027580A JP 1027580 A JP1027580 A JP 1027580A JP S56109131 A JPS56109131 A JP S56109131A
Authority
JP
Japan
Prior art keywords
blank material
ball stud
roughly
forward extrusion
diameter
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
JP1027580A
Other languages
Japanese (ja)
Other versions
JPS632697B2 (en
Inventor
Koichi Fujimaki
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.)
RIZUMU JIDOSHA BUHIN SEIZO KK
Rhythm Motor Parts Manufacturing Co Ltd
Original Assignee
RIZUMU JIDOSHA BUHIN SEIZO KK
Rhythm Motor Parts Manufacturing Co Ltd
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 RIZUMU JIDOSHA BUHIN SEIZO KK, Rhythm Motor Parts Manufacturing Co Ltd filed Critical RIZUMU JIDOSHA BUHIN SEIZO KK
Priority to JP1027580A priority Critical patent/JPS56109131A/en
Publication of JPS56109131A publication Critical patent/JPS56109131A/en
Publication of JPS632697B2 publication Critical patent/JPS632697B2/ja
Granted legal-status Critical Current

Links

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  • Forging (AREA)

Abstract

PURPOSE: To simplify process and improve molding efficiency by forming a screw part, a tapered part and a semispherical part by forward extrusion.
CONSTITUTION: A blank material A having roughly the same volume as that of a finished ball stud and roughly the same outside diameter as the stem diameter of the ball stud is cut and a screw part diameter part 1, a tapered part 2, and a semisphercial part 3 to roughly a semispherical shape 3' are formed to the blank material A by forward extrusion. Hence, the blank material errors at the working are absorbed in a recess 4 and spherical surface area is made small, whereby the deformation resistance in the process is made uniform, pressing force is optimized and accuracy is accurately assured. Thereby, the blank material is upset by the forward extrusion operation alone without requiring preliminary machining, and the process is simplified.
COPYRIGHT: (C)1981,JPO&Japio
JP1027580A 1980-01-31 1980-01-31 Cold forging method of ball stud Granted JPS56109131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1027580A JPS56109131A (en) 1980-01-31 1980-01-31 Cold forging method of ball stud

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1027580A JPS56109131A (en) 1980-01-31 1980-01-31 Cold forging method of ball stud

Publications (2)

Publication Number Publication Date
JPS56109131A true JPS56109131A (en) 1981-08-29
JPS632697B2 JPS632697B2 (en) 1988-01-20

Family

ID=11745755

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1027580A Granted JPS56109131A (en) 1980-01-31 1980-01-31 Cold forging method of ball stud

Country Status (1)

Country Link
JP (1) JPS56109131A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092034A (en) * 1983-10-24 1985-05-23 Toyota Motor Corp Cold-warm forging of slug of engine valve
JPS62267042A (en) * 1986-05-13 1987-11-19 Okada Shokai:Kk Manufacture of anchor bolt

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210819A (en) * 1975-06-12 1977-01-27 Kiyoshi Inoue Malleable high permeability alloy for high frequency

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210819A (en) * 1975-06-12 1977-01-27 Kiyoshi Inoue Malleable high permeability alloy for high frequency

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092034A (en) * 1983-10-24 1985-05-23 Toyota Motor Corp Cold-warm forging of slug of engine valve
JPS62267042A (en) * 1986-05-13 1987-11-19 Okada Shokai:Kk Manufacture of anchor bolt

Also Published As

Publication number Publication date
JPS632697B2 (en) 1988-01-20

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