JPS55100816A - Forming method for taper pipe by u-o forming - Google Patents
Forming method for taper pipe by u-o formingInfo
- Publication number
- JPS55100816A JPS55100816A JP795179A JP795179A JPS55100816A JP S55100816 A JPS55100816 A JP S55100816A JP 795179 A JP795179 A JP 795179A JP 795179 A JP795179 A JP 795179A JP S55100816 A JPS55100816 A JP S55100816A
- Authority
- JP
- Japan
- Prior art keywords
- type
- dies
- mandrel
- forming
- press
- 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.)
- Granted
Links
- 230000015572 biosynthetic process Effects 0.000 abstract 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
PURPOSE: To make possible the edge parts of the pipe blank to be roughly formed into circular arc, without necessity of the exclusive edge forming press, by inserting a specially shaped mandrel, at carrying out the O-forming press after forming the trapezoid cut plate into U-type.
CONSTITUTION: The material plate P, cut into a trapezoid shape whose logitudinal length is equal to length of the taper pipe like as the pole to be manufactured, and the breadth of both ends are respectively equal to circumferential lengths of small diameter end and large diameter end of the taper pipe, is bent into U-type. This U-type material is set between the press dies 1, 2, in which the truncated cone type halved cavities of the O-forming press are arranged facing each other from upside and downside, on purpose to form this material into the ellipse type. The mandrel 3 is inserted into this U-type material P; this mandrel 3 has two longitudinal flat planes on both sides obtained by cutting above truncated cone, and also has a part of conical plane on upside and downside. Then by pressing the dies 1, 2, the straight zone of both edges of the material P is bent inward, and is formed into almost perfect curvature. After that, the dies 1, 2, are released from the press, the mandrel 3 is moved to the side of large diameter, and then, the material P is again pressed by the dies 1, 2, finishing the formation.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP795179A JPS6018502B2 (en) | 1979-01-24 | 1979-01-24 | Forming method by U-O homing of tapered pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP795179A JPS6018502B2 (en) | 1979-01-24 | 1979-01-24 | Forming method by U-O homing of tapered pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55100816A true JPS55100816A (en) | 1980-08-01 |
| JPS6018502B2 JPS6018502B2 (en) | 1985-05-10 |
Family
ID=11679792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP795179A Expired JPS6018502B2 (en) | 1979-01-24 | 1979-01-24 | Forming method by U-O homing of tapered pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6018502B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009166133A (en) * | 2009-05-08 | 2009-07-30 | Seiko Epson Corp | Manufacturing method of cylindrical shaft |
| CN104492845A (en) * | 2014-12-12 | 2015-04-08 | 威海克莱特菲尔风机股份有限公司 | Cone cylinder fabricating and forming mould and fabricating process |
| JP2016074009A (en) * | 2014-10-08 | 2016-05-12 | 株式会社フタバ | Bending roll device |
-
1979
- 1979-01-24 JP JP795179A patent/JPS6018502B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009166133A (en) * | 2009-05-08 | 2009-07-30 | Seiko Epson Corp | Manufacturing method of cylindrical shaft |
| JP2016074009A (en) * | 2014-10-08 | 2016-05-12 | 株式会社フタバ | Bending roll device |
| CN104492845A (en) * | 2014-12-12 | 2015-04-08 | 威海克莱特菲尔风机股份有限公司 | Cone cylinder fabricating and forming mould and fabricating process |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6018502B2 (en) | 1985-05-10 |
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