JPS5530317A - Bending method and its device - Google Patents

Bending method and its device

Info

Publication number
JPS5530317A
JPS5530317A JP10212678A JP10212678A JPS5530317A JP S5530317 A JPS5530317 A JP S5530317A JP 10212678 A JP10212678 A JP 10212678A JP 10212678 A JP10212678 A JP 10212678A JP S5530317 A JPS5530317 A JP S5530317A
Authority
JP
Japan
Prior art keywords
punch
flange
worked
plate
pad
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
Application number
JP10212678A
Other languages
Japanese (ja)
Inventor
Yasutomo Nagai
Kenji Takahashi
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.)
Press Kogyo Co Ltd
Original Assignee
Press Kogyo Co Ltd
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 Press Kogyo Co Ltd filed Critical Press Kogyo Co Ltd
Priority to JP10212678A priority Critical patent/JPS5530317A/en
Publication of JPS5530317A publication Critical patent/JPS5530317A/en
Pending legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To raise work efficiency, reduce spring back, better the roundness of circular section and improve accuracy of products by blanking, punching, and bending the material to be worked, such as steel plate etc., and, at the same time, pressing the edge of the flange with the restrike punch.
CONSTITUTION: The material A to be worked which is placed on the cushion pad 2 is clamped with the pad 2 and punch 5, and bent by ordinary pressing. The punch 5 forms the material A to be worked through descent of the punch plate 7 and the flange which is formed at this time is not interfered by the restrike punch 6. When the pad 2 is compressed and lowered to the bottom of the die 1 and stopped, and the plate 7 is lowered, oil pressure in the cylinder 3 increases to exceed the setting of sequence valve. Then, the oil escapes to the accumulator through the valve. The punch 6 descends with the plate 7 and strikes the upper end of the flange a and reworks the flange a until it attiains to the specified height.
COPYRIGHT: (C)1980,JPO&Japio
JP10212678A 1978-08-22 1978-08-22 Bending method and its device Pending JPS5530317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10212678A JPS5530317A (en) 1978-08-22 1978-08-22 Bending method and its device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10212678A JPS5530317A (en) 1978-08-22 1978-08-22 Bending method and its device

Publications (1)

Publication Number Publication Date
JPS5530317A true JPS5530317A (en) 1980-03-04

Family

ID=14319086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10212678A Pending JPS5530317A (en) 1978-08-22 1978-08-22 Bending method and its device

Country Status (1)

Country Link
JP (1) JPS5530317A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62120188U (en) * 1986-01-24 1987-07-30
KR20030025774A (en) * 2002-01-30 2003-03-29 김상수 Mothod for manufacturing kick down drum for automatic transmission of automobile
JP2010519048A (en) * 2007-02-19 2010-06-03 フェストアルピネ・アンアルバイトゥング・ゲー・エム・ベー・ハー Method and apparatus for temperature controlled forming of hot rolled steel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53134762A (en) * 1977-04-28 1978-11-24 Sanei Kinzoku Kogyo Kk Method and device for forming acute bend angle and drawing edge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53134762A (en) * 1977-04-28 1978-11-24 Sanei Kinzoku Kogyo Kk Method and device for forming acute bend angle and drawing edge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62120188U (en) * 1986-01-24 1987-07-30
KR20030025774A (en) * 2002-01-30 2003-03-29 김상수 Mothod for manufacturing kick down drum for automatic transmission of automobile
JP2010519048A (en) * 2007-02-19 2010-06-03 フェストアルピネ・アンアルバイトゥング・ゲー・エム・ベー・ハー Method and apparatus for temperature controlled forming of hot rolled steel

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