JPS56163050A - Pressing method of shaft having undercut - Google Patents
Pressing method of shaft having undercutInfo
- Publication number
- JPS56163050A JPS56163050A JP6708880A JP6708880A JPS56163050A JP S56163050 A JPS56163050 A JP S56163050A JP 6708880 A JP6708880 A JP 6708880A JP 6708880 A JP6708880 A JP 6708880A JP S56163050 A JPS56163050 A JP S56163050A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- undercut
- collarlike
- split rings
- shaft part
- 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
Links
Abstract
PURPOSE: To work a shaft having an undercut easily with good accuracy without using any special device by punching a blank material, which has been formed with a shaft part and a collarlike part with a press, in the state that split rings are mounted to the shaft part right under the collarlike part.
CONSTITUTION: A collarlike part 5 is formed to a shaft part 4 by pressing a barlike blank material 3. Next, split rings 6 of which the bottom end face is put in contact with the part 5 are placed along the shaft part 4 of the material 3, and in this state, the material 3 is inserted into the die hole 8 of a die 7. Thence, a punch 9 is pushed in to form the material. Upon completion of the forming, the work A is removed from the die hole 8, and the split rings 6 are removed, whereby the shaft 1 having an undercut part 2 is obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6708880A JPS56163050A (en) | 1980-05-22 | 1980-05-22 | Pressing method of shaft having undercut |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6708880A JPS56163050A (en) | 1980-05-22 | 1980-05-22 | Pressing method of shaft having undercut |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56163050A true JPS56163050A (en) | 1981-12-15 |
Family
ID=13334770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6708880A Pending JPS56163050A (en) | 1980-05-22 | 1980-05-22 | Pressing method of shaft having undercut |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56163050A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007232064A (en) * | 2006-02-28 | 2007-09-13 | Akebono Brake Ind Co Ltd | Groove forming method for dustproof boot of bottomed cylinder piston and piston made with the forming method |
-
1980
- 1980-05-22 JP JP6708880A patent/JPS56163050A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007232064A (en) * | 2006-02-28 | 2007-09-13 | Akebono Brake Ind Co Ltd | Groove forming method for dustproof boot of bottomed cylinder piston and piston made with the forming method |
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