JPS55158834A - Bending method of steel material - Google Patents
Bending method of steel materialInfo
- Publication number
- JPS55158834A JPS55158834A JP6688679A JP6688679A JPS55158834A JP S55158834 A JPS55158834 A JP S55158834A JP 6688679 A JP6688679 A JP 6688679A JP 6688679 A JP6688679 A JP 6688679A JP S55158834 A JPS55158834 A JP S55158834A
- Authority
- JP
- Japan
- Prior art keywords
- steel material
- straightening
- support piece
- production
- straightening plate
- 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
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
PURPOSE: To prevent the production of creases, the collapsion of end faces, etc. by straightening a steel material from above and below by the elasticity of straightening rolls.
CONSTITUTION: When the drive motor of a spindle 1 is run to revolve a spindle die 3a, a steel material 12 turns around the circumferential edge of the spindle die 3a integrally with a straightening plate 13 end support piece 8. At the time when the steel material 12 passes passages 11, 11, both sides of the steel material 12 are straightened by 7a, 7b and the top and bottom sides are straightened by the elasticity of straightening rolls 15... by way of the straightening plate 13 and the support piece 8, whereby bending is done. Hence, the production of creases and the occurrence of the collapsion of the end faces, the reduction of width and the change of thickness are obviated. In addition, the steel material 12 does not contact the bottom face of the straightening plate 13 and the top surface of the support piece 8 until it is inserted into the passages 11, 11 and nevertheless its leading end is fixed to the straightening plate 13 and support piece 8 by means of pins 14 and the material turns integrally with these, whereby the production of sliding flows is prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6688679A JPS55158834A (en) | 1979-05-31 | 1979-05-31 | Bending method of steel material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6688679A JPS55158834A (en) | 1979-05-31 | 1979-05-31 | Bending method of steel material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55158834A true JPS55158834A (en) | 1980-12-10 |
JPS5727775B2 JPS5727775B2 (en) | 1982-06-12 |
Family
ID=13328821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6688679A Granted JPS55158834A (en) | 1979-05-31 | 1979-05-31 | Bending method of steel material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55158834A (en) |
-
1979
- 1979-05-31 JP JP6688679A patent/JPS55158834A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5727775B2 (en) | 1982-06-12 |
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