JPS5548433A - Lubricating method in plastic working - Google Patents
Lubricating method in plastic workingInfo
- Publication number
- JPS5548433A JPS5548433A JP12062478A JP12062478A JPS5548433A JP S5548433 A JPS5548433 A JP S5548433A JP 12062478 A JP12062478 A JP 12062478A JP 12062478 A JP12062478 A JP 12062478A JP S5548433 A JPS5548433 A JP S5548433A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- pipe
- dies
- diameter
- lubricating
- 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
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
PURPOSE: To produce a true circular diameter contraction pipe by performing uniform plastic deformation, and to extend a life of the dies, by wrapping the outside surface of the circular original pipe which has been elliptical by plastic deformation, with a lubricating sheet, and pressing it and contracting the diamter in the long diameter direction through the half split dies which makes a circle by congruence.
CONSTITUTION: The outside surface of the original pipe 1 which has been made elliptical is wrapped with the lubricating sheet 4 made of synthetic resin sheet such as PVC, PE, Polyester, etc., and it is fixed by use of a string, an adhesive tape etc. In case the original pipe 1 is pressed in order to compress the diameter through the half split dies 2, 2 in the aforesaid state, the dies 2, 2 and the original pipe 1 are not made to contact directly owing to the exsistence of the sheet 4, and satisfactory lubricating action can be obtained on account of the sheet 4, therefore the aimed diameter compression pipe 3 of a true circle, whose A, C part and B, D part are equal in thickness, can be worked exactly. After working the sheet 4 can be easily peeled off from the pipe 3.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12062478A JPS5548433A (en) | 1978-09-30 | 1978-09-30 | Lubricating method in plastic working |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12062478A JPS5548433A (en) | 1978-09-30 | 1978-09-30 | Lubricating method in plastic working |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5548433A true JPS5548433A (en) | 1980-04-07 |
Family
ID=14790825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12062478A Pending JPS5548433A (en) | 1978-09-30 | 1978-09-30 | Lubricating method in plastic working |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5548433A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002160021A (en) * | 2000-09-13 | 2002-06-04 | Asmo Co Ltd | Method for manufacturing yoke |
-
1978
- 1978-09-30 JP JP12062478A patent/JPS5548433A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002160021A (en) * | 2000-09-13 | 2002-06-04 | Asmo Co Ltd | Method for manufacturing yoke |
| JP4602603B2 (en) * | 2000-09-13 | 2010-12-22 | アスモ株式会社 | Yoke manufacturing method |
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