JPS56109131A - Cold forging method of ball stud - Google Patents
Cold forging method of ball studInfo
- 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
Links
Landscapes
- 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
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)
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)
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 |
-
1980
- 1980-01-31 JP JP1027580A patent/JPS56109131A/en active Granted
Patent Citations (1)
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)
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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