JPS5452664A - Forming method for pipe at pipe joint portion - Google Patents
Forming method for pipe at pipe joint portionInfo
- Publication number
- JPS5452664A JPS5452664A JP12062977A JP12062977A JPS5452664A JP S5452664 A JPS5452664 A JP S5452664A JP 12062977 A JP12062977 A JP 12062977A JP 12062977 A JP12062977 A JP 12062977A JP S5452664 A JPS5452664 A JP S5452664A
- Authority
- JP
- Japan
- Prior art keywords
- expanded
- pipe
- end edge
- jig
- piping
- 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
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
PURPOSE: To simply give sufficient strength to the pipe joint portion, and to make possible the expanding ratio to be greatly increased, by giving the longitudinal compressive deformation to the end edge of the expanded whose wall is thinned through the expansion process, on purpose to form the thick wall.
CONSTITUTION: The guide part of the insertion jig 7 is press fitted into the opening 16 of the piping 1 rigidly held by the fixing jig 6. The piping 1 is expanded into trumpet-shape along the slant face 13 and is expanded into thin wall pipe successively in the insertion part 9. With further progress of the press fitting, the large diameter end edge 10 of the insertion part 11 hits the pipe end edge of the exoanded part 2; hereby, the pipe end edge successively receives longitudinal compressive deformation. When the insertion of the insertion jig 7 is finished, the expanded part is compressively deformed, in the gap between the jig 7 and the fixing jig 6, so as to form thick walled condition; hereby, the wall thickness of the expanded part becomes equal to the wall thickness of the raw material 1, so that the piping of obtained. As a result, the expansion ratio can be greatly increased as compared with the conventional method
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12062977A JPS5452664A (en) | 1977-10-04 | 1977-10-04 | Forming method for pipe at pipe joint portion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12062977A JPS5452664A (en) | 1977-10-04 | 1977-10-04 | Forming method for pipe at pipe joint portion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5452664A true JPS5452664A (en) | 1979-04-25 |
Family
ID=14790944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12062977A Pending JPS5452664A (en) | 1977-10-04 | 1977-10-04 | Forming method for pipe at pipe joint portion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5452664A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01263747A (en) * | 1988-04-15 | 1989-10-20 | Hitachi Ltd | Memory control system |
| JPH0216229U (en) * | 1988-07-08 | 1990-02-01 | ||
| WO1999030852A1 (en) * | 1997-12-15 | 1999-06-24 | Bestex Kyoei Co., Ltd. | Method of molding high expansion pipe, and the high expansion pipe |
| EP1121998A1 (en) * | 1999-06-21 | 2001-08-08 | Sango Co., Ltd. | Method and device for expanding tube material |
| JP2002346664A (en) * | 2001-05-29 | 2002-12-03 | Nisshin Steel Co Ltd | Method for flaring edge of metal tube |
| WO2006135266A1 (en) * | 2005-06-15 | 2006-12-21 | Elektromontaz-Rzeszow S.A. | Method and apparatus for shaping various cross-sections on metal pipes |
| US7431317B2 (en) | 2002-08-05 | 2008-10-07 | Giant Manufacturing Co., Ltd. | Bicycle frame part having a disproportionally enlarged end section and process for making the same |
| JP4906849B2 (en) * | 2006-05-15 | 2012-03-28 | 株式会社小松製作所 | Steel pipe expansion forming method and steel pipe expansion forming apparatus |
| CN103157726A (en) * | 2013-04-12 | 2013-06-19 | 柳州力通车用空调有限公司 | Pipe joint expanded connection expanded sleeve mould |
| JP2015066552A (en) * | 2013-09-26 | 2015-04-13 | 日新製鋼株式会社 | Method of manufacturing metallic double pipe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS549152A (en) * | 1977-06-23 | 1979-01-23 | Mitsuboshi Seisakusho | Method of making stairinggheaddpipe |
-
1977
- 1977-10-04 JP JP12062977A patent/JPS5452664A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS549152A (en) * | 1977-06-23 | 1979-01-23 | Mitsuboshi Seisakusho | Method of making stairinggheaddpipe |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01263747A (en) * | 1988-04-15 | 1989-10-20 | Hitachi Ltd | Memory control system |
| JPH0216229U (en) * | 1988-07-08 | 1990-02-01 | ||
| WO1999030852A1 (en) * | 1997-12-15 | 1999-06-24 | Bestex Kyoei Co., Ltd. | Method of molding high expansion pipe, and the high expansion pipe |
| EP1121998A1 (en) * | 1999-06-21 | 2001-08-08 | Sango Co., Ltd. | Method and device for expanding tube material |
| EP1121998A4 (en) * | 1999-06-21 | 2003-04-23 | Sango Co Ltd | Method and device for expanding tube material |
| JP2002346664A (en) * | 2001-05-29 | 2002-12-03 | Nisshin Steel Co Ltd | Method for flaring edge of metal tube |
| US7431317B2 (en) | 2002-08-05 | 2008-10-07 | Giant Manufacturing Co., Ltd. | Bicycle frame part having a disproportionally enlarged end section and process for making the same |
| WO2006135266A1 (en) * | 2005-06-15 | 2006-12-21 | Elektromontaz-Rzeszow S.A. | Method and apparatus for shaping various cross-sections on metal pipes |
| JP4906849B2 (en) * | 2006-05-15 | 2012-03-28 | 株式会社小松製作所 | Steel pipe expansion forming method and steel pipe expansion forming apparatus |
| US8365571B2 (en) | 2006-05-15 | 2013-02-05 | Komatsu Ltd. | Pipe expanding method and pipe expanding device for steel pipe |
| CN103157726A (en) * | 2013-04-12 | 2013-06-19 | 柳州力通车用空调有限公司 | Pipe joint expanded connection expanded sleeve mould |
| JP2015066552A (en) * | 2013-09-26 | 2015-04-13 | 日新製鋼株式会社 | Method of manufacturing metallic double pipe |
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