JPS5623338A - Formation of female screw - Google Patents
Formation of female screwInfo
- Publication number
- JPS5623338A JPS5623338A JP9812179A JP9812179A JPS5623338A JP S5623338 A JPS5623338 A JP S5623338A JP 9812179 A JP9812179 A JP 9812179A JP 9812179 A JP9812179 A JP 9812179A JP S5623338 A JPS5623338 A JP S5623338A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- male screw
- female screw
- die
- screw bar
- 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
Landscapes
- Forging (AREA)
Abstract
PURPOSE: To form a female screw superior in accuracy and strength by penetrating to a male screw of a male screw bar, after inserting a male screw bar which is a pattern of a female screw into a cylindrical body, and making plastic deformation of a cylindrical body moving a die from one end of a cylindrical body along its outer circumference in the axis direction.
CONSTITUTION: The male screw bar 4 which is a pattern of a female screw is inserted into the cylindrical body 3 having a bit bigger inner diameter than the bottom diameter of thread of female screw to be formed. By moving the die 5 from one end of the cylindrical body along its outer circumference in the axis direction, the cylindrical body is ironed by the working surface of die making plastic deformation, and a female screw is formed penetrating to the male screw 4a of male screw bar. Then, the die is pulled out, and the cylindrical body is set between the hydraulic cylinders 7. By supplying super high pressure oil, the cylindrical body is expanded receiving a pressing load from the piston rod 10. As a result, clearance is caused between the cylindrical body and the male screw bar, and the male screw bar can be taken out easily.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9812179A JPS5623338A (en) | 1979-08-02 | 1979-08-02 | Formation of female screw |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9812179A JPS5623338A (en) | 1979-08-02 | 1979-08-02 | Formation of female screw |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5623338A true JPS5623338A (en) | 1981-03-05 |
Family
ID=14211453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9812179A Pending JPS5623338A (en) | 1979-08-02 | 1979-08-02 | Formation of female screw |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5623338A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008290146A (en) * | 2007-05-24 | 2008-12-04 | Toshiji Ito | Female screw forming method |
-
1979
- 1979-08-02 JP JP9812179A patent/JPS5623338A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008290146A (en) * | 2007-05-24 | 2008-12-04 | Toshiji Ito | Female screw forming method |
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