JPS5741823A - Recess part forming method on peripheral surface of metallic pipe - Google Patents
Recess part forming method on peripheral surface of metallic pipeInfo
- Publication number
- JPS5741823A JPS5741823A JP11671980A JP11671980A JPS5741823A JP S5741823 A JPS5741823 A JP S5741823A JP 11671980 A JP11671980 A JP 11671980A JP 11671980 A JP11671980 A JP 11671980A JP S5741823 A JPS5741823 A JP S5741823A
- Authority
- JP
- Japan
- Prior art keywords
- peripheral surface
- metallic pipe
- pipe
- outer peripheral
- forming method
- 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 form recessed parts on a metallic pipe surface avoiding the generation of waves on recessed bottom surfaces and a buckling on the peripheral surface of said pipe, by pressing the outer peripheral surface of the metallic pipe with the aid of plunger punches by simultaneously adding the hydraulic pressure to the inner surface of the pipe.
CONSTITUTION: Plunger punches 5, having horizontal bottom-end surfaces 5' and moving vertically along upper and lower guide holes 4 provided to a upper die 2, are allowed to press-contact on the outer peripheral surface of a horizontally placed metallic pipe 1 held by the upper die 2 and a lower die 3. Recessed parts 6, having flat bottom surfaces 8 approximately vertical side-wall surfaces 9, 9, are formed by pressing the outer peripheral surface of the metallic pipe 1 with the aid of plunger punches 5 and by simultaneously adding the hydraulic pressure 7 to the inner peripheral surface of the pipe 1. The metallic pipe 1 has said recessed parts 6 capable of hanging other parts and has a beautiful appearance because of no buckling.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11671980A JPS5741823A (en) | 1980-08-25 | 1980-08-25 | Recess part forming method on peripheral surface of metallic pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11671980A JPS5741823A (en) | 1980-08-25 | 1980-08-25 | Recess part forming method on peripheral surface of metallic pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5741823A true JPS5741823A (en) | 1982-03-09 |
Family
ID=14694107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11671980A Pending JPS5741823A (en) | 1980-08-25 | 1980-08-25 | Recess part forming method on peripheral surface of metallic pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5741823A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4885472A (en) * | 1972-02-18 | 1973-11-13 |
-
1980
- 1980-08-25 JP JP11671980A patent/JPS5741823A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4885472A (en) * | 1972-02-18 | 1973-11-13 |
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