JPS57103741A - Method for stepping constriction work of pipe material - Google Patents
Method for stepping constriction work of pipe materialInfo
- Publication number
- JPS57103741A JPS57103741A JP18046880A JP18046880A JPS57103741A JP S57103741 A JPS57103741 A JP S57103741A JP 18046880 A JP18046880 A JP 18046880A JP 18046880 A JP18046880 A JP 18046880A JP S57103741 A JPS57103741 A JP S57103741A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- pipe material
- small diameter
- die
- diameter 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 make a step part at right angles in the stepping constriction work of a pipe material, by forming the pipe material into a stepped pipe having a small diameter part and constricting the pipe material by a die, which has a step part perpendicular to the axial line, while applying pressure to the end face of the small diameter part in the axial direction.
CONSTITUTION: Not only the number of rotations of a pipe material 5 is controlled but also a die 6 whose sliding speed is controlled is caused to approach the pipe material 5 to form a small diameter part 7a of a prescribed length by the primary constriction work. While applying a load from the end face of the small diameter part 7a of a blank pipe 7 formed in this manner in the axial direction by a pressure applying device 9, the sliding speed of a die 8 where a step part is formed on a plane perpendicular to the axial direction of the blank pipe 7 is controlled to cause the die 8 to approach the blank pipe 7 for the secondary constriction work. In respect to a product 4 subjected to the secondary constriction work, a step part 4b has a face perpendicular to the axial direction of the pipe 4 and is connected to the small diameter part 4a.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18046880A JPS57103741A (en) | 1980-12-22 | 1980-12-22 | Method for stepping constriction work of pipe material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18046880A JPS57103741A (en) | 1980-12-22 | 1980-12-22 | Method for stepping constriction work of pipe material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57103741A true JPS57103741A (en) | 1982-06-28 |
Family
ID=16083742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18046880A Pending JPS57103741A (en) | 1980-12-22 | 1980-12-22 | Method for stepping constriction work of pipe material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57103741A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5546647A (en) * | 1993-04-06 | 1996-08-20 | Pruna; Alberto N. | Method of making an ejector tube for molds |
-
1980
- 1980-12-22 JP JP18046880A patent/JPS57103741A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5546647A (en) * | 1993-04-06 | 1996-08-20 | Pruna; Alberto N. | Method of making an ejector tube for molds |
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