JPS54132458A - Method and apparatus for u-forming work in manufacturing process for u-o steel pipe - Google Patents
Method and apparatus for u-forming work in manufacturing process for u-o steel pipeInfo
- Publication number
- JPS54132458A JPS54132458A JP3998478A JP3998478A JPS54132458A JP S54132458 A JPS54132458 A JP S54132458A JP 3998478 A JP3998478 A JP 3998478A JP 3998478 A JP3998478 A JP 3998478A JP S54132458 A JPS54132458 A JP S54132458A
- Authority
- JP
- Japan
- Prior art keywords
- locker
- die
- cylinder
- forming
- 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
Abstract
PURPOSE: To greatly reduce the vertical forming load, and to improve the forming efficiency, by carrying out the forming work while actuating the lowding mechanism for loading an external force in the direction for facilitating the rotation of the locker die while the punch is going down.
CONSTITUTION: The steel plate 6, being laid on the locker dies 3', 3', is bent by moving down the punch 1 according to the drive of the cylinder 17. In early stage of this bending pass, the cylinder 12 and the locker die 3' are both standing still. when the punch 1 further goes down and steel plate 6 contacts with the lower shoe 6, the locker die 3' begins rotation centering at the shaft 18, and actuates the direction control valve 14 for driving the cylinder 12, and the loading force of the cylinder gives the turing force to the looker die 3' whose rotation is then made easy; hereby, the forming load in the vertical direction is greatly reduced. After the U- forming work is finished, the direction control valve 14 is operated so as to impress the reverse pressre on the cylinder 12, and to return the locker die 3' to the initial position.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3998478A JPS54132458A (en) | 1978-04-05 | 1978-04-05 | Method and apparatus for u-forming work in manufacturing process for u-o steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3998478A JPS54132458A (en) | 1978-04-05 | 1978-04-05 | Method and apparatus for u-forming work in manufacturing process for u-o steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54132458A true JPS54132458A (en) | 1979-10-15 |
Family
ID=12568200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3998478A Pending JPS54132458A (en) | 1978-04-05 | 1978-04-05 | Method and apparatus for u-forming work in manufacturing process for u-o steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54132458A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464542A (en) * | 2013-08-30 | 2013-12-25 | 辽宁华原重型装备有限公司 | Plate forming machine and processing method thereof |
| CN108213126A (en) * | 2018-03-21 | 2018-06-29 | 岳德全 | A kind of high stability workpiece bows device |
| JP2020078820A (en) * | 2018-11-14 | 2020-05-28 | 株式会社富士機械工作所 | Roll forming method and roll forming apparatus |
-
1978
- 1978-04-05 JP JP3998478A patent/JPS54132458A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464542A (en) * | 2013-08-30 | 2013-12-25 | 辽宁华原重型装备有限公司 | Plate forming machine and processing method thereof |
| CN108213126A (en) * | 2018-03-21 | 2018-06-29 | 岳德全 | A kind of high stability workpiece bows device |
| JP2020078820A (en) * | 2018-11-14 | 2020-05-28 | 株式会社富士機械工作所 | Roll forming method and roll forming apparatus |
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