JPS56128629A - End part working method for pipe - Google Patents
End part working method for pipeInfo
- Publication number
- JPS56128629A JPS56128629A JP3127380A JP3127380A JPS56128629A JP S56128629 A JPS56128629 A JP S56128629A JP 3127380 A JP3127380 A JP 3127380A JP 3127380 A JP3127380 A JP 3127380A JP S56128629 A JPS56128629 A JP S56128629A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- diameter part
- diameter
- wall thickness
- punch
- 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 improve workability and productively by force expanding an end part through pressing to form a large-diameter part, and crushing this large-diameter part thereby increasing its wall thickness.
CONSTITUTION: A pipe (a) is held by being projected for a predetermined length from the top surface of a stationary die 1. After a punch 2a is force-inserted into the pipe (a), the first part 2b of a moving die 2 crushes the large diameter part a1 axially. The punch 2a fits to the inside circumference of the large-diameter part a1 and the outside diameter of the large-diameter part a1 increases by accompanying the increase in the wall thickness and the length in the axial direction is reduced. The pipe (a) is thereby worked to the pipe (a') having the unworked small-diameter part a2' of the blank material as it is and the large-diameter part a1' of a diameter and thickness larger than those of said part. Next, the pipe (a') is finished in the 2nd process, by which the large-diameter part a1' is further crushed and is increased up to predetermined wall thickness. In this way, the pipe (a') is worked to the pipe (a") provided with the thin-walled small-diameter part (a2") and the large-diameter part (a1") having desired wall thickness in the 2nd process.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3127380A JPS56128629A (en) | 1980-03-12 | 1980-03-12 | End part working method for pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3127380A JPS56128629A (en) | 1980-03-12 | 1980-03-12 | End part working method for pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56128629A true JPS56128629A (en) | 1981-10-08 |
Family
ID=12326717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3127380A Pending JPS56128629A (en) | 1980-03-12 | 1980-03-12 | End part working method for pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56128629A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0280077U (en) * | 1988-12-08 | 1990-06-20 | ||
| EP1995001A1 (en) * | 2007-05-24 | 2008-11-26 | Witzig & Frank GmbH | Method and device for producing pipe connections |
| EP2018915A1 (en) * | 2006-05-15 | 2009-01-28 | Komatsu Ltd | Expansion-molding method and expansion-molding device for steel pipe |
| KR101160075B1 (en) | 2010-08-11 | 2012-06-26 | 윤한경 | Non-Welding pipe connection manufacturing method and manufacturing mold thereof |
| KR101275299B1 (en) * | 2009-06-01 | 2013-06-14 | 일진제강(주) | Manufacturing method of rack gear housing cylinder tube for automotive steering system |
| EP3743638B1 (en) * | 2018-01-24 | 2023-02-01 | Ktm Ag | Telescopic suspension fork leg and telescopic suspension fork provided with same |
-
1980
- 1980-03-12 JP JP3127380A patent/JPS56128629A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0280077U (en) * | 1988-12-08 | 1990-06-20 | ||
| EP2018915A1 (en) * | 2006-05-15 | 2009-01-28 | Komatsu Ltd | Expansion-molding method and expansion-molding device for steel pipe |
| EP2018915A4 (en) * | 2006-05-15 | 2013-03-13 | Komatsu Mfg Co Ltd | Expansion-molding method and expansion-molding device for steel pipe |
| EP1995001A1 (en) * | 2007-05-24 | 2008-11-26 | Witzig & Frank GmbH | Method and device for producing pipe connections |
| US8356507B2 (en) | 2007-05-24 | 2013-01-22 | Witzig & Frank Gmbh | Method and device for manufacturing pipe connectors |
| KR101275299B1 (en) * | 2009-06-01 | 2013-06-14 | 일진제강(주) | Manufacturing method of rack gear housing cylinder tube for automotive steering system |
| KR101160075B1 (en) | 2010-08-11 | 2012-06-26 | 윤한경 | Non-Welding pipe connection manufacturing method and manufacturing mold thereof |
| EP3743638B1 (en) * | 2018-01-24 | 2023-02-01 | Ktm Ag | Telescopic suspension fork leg and telescopic suspension fork provided with same |
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