JPS55158834A - Bending method of steel material - Google Patents

Bending method of steel material

Info

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
Application number
JP6688679A
Other languages
Japanese (ja)
Other versions
JPS5727775B2 (en
Inventor
Hiroshi Nakama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP6688679A priority Critical patent/JPS55158834A/en
Publication of JPS55158834A publication Critical patent/JPS55158834A/en
Publication of JPS5727775B2 publication Critical patent/JPS5727775B2/ja
Granted legal-status Critical Current

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
JP6688679A 1979-05-31 1979-05-31 Bending method of steel material Granted JPS55158834A (en)

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)

Also Published As

Publication number Publication date
JPS5727775B2 (en) 1982-06-12

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