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JPS5752525A - Method for press forming - Google Patents

Method for press forming

Info

Publication number
JPS5752525A
JPS5752525A JP55127874A JP12787480A JPS5752525A JP S5752525 A JPS5752525 A JP S5752525A JP 55127874 A JP55127874 A JP 55127874A JP 12787480 A JP12787480 A JP 12787480A JP S5752525 A JPS5752525 A JP S5752525A
Authority
JP
Japan
Prior art keywords
press forming
punch
restrained
worked
early stage
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
JP55127874A
Other languages
Japanese (ja)
Other versions
JPS6358652B2 (en
Inventor
Isamu Katsumata
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Toyota Jidosha Kogyo KK
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 Toyota Motor Corp, Toyota Jidosha Kogyo KK filed Critical Toyota Motor Corp
Priority to JP55127874A priority Critical patent/JPS5752525A/en
Publication of JPS5752525A publication Critical patent/JPS5752525A/en
Publication of JPS6358652B2 publication Critical patent/JPS6358652B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE: To prevent linear discrepancies produced during the course of swaging and bulging, by increasing deformation resistances by performing the primary working at the early stage of press forming process, and then, by performed the press forming while parts to be worked are restrained.
CONSTITUTION: A crude material to be worked 5 is placed on a lower blank holder holder 3, and the crude material 5 is grasped by lowering an upper blank holder 4. Then, the material 5 is bent to a condition 6 at the early stage with a punch 1 and a cushion pad 7. After the deformation resistance of the material 5 is increased by this working, the punch 1 is lowered further while the material 5 is restrained with the punch 1 and the pad 7, and the press forming is completed so that the angular part 8 of the punch 1 will not slip out of the place where the angular part 8 initially contacted the material 5. When this method is applied, the bent angle 18 of the material 5 becomes smaller and the material will hardly move in the next press forming process, and, therefore, no linear discrepancy will occur.
COPYRIGHT: (C)1982,JPO&Japio
JP55127874A 1980-09-17 1980-09-17 Method for press forming Granted JPS5752525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55127874A JPS5752525A (en) 1980-09-17 1980-09-17 Method for press forming

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55127874A JPS5752525A (en) 1980-09-17 1980-09-17 Method for press forming

Publications (2)

Publication Number Publication Date
JPS5752525A true JPS5752525A (en) 1982-03-29
JPS6358652B2 JPS6358652B2 (en) 1988-11-16

Family

ID=14970771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55127874A Granted JPS5752525A (en) 1980-09-17 1980-09-17 Method for press forming

Country Status (1)

Country Link
JP (1) JPS5752525A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59104222A (en) * 1982-12-06 1984-06-16 Toyota Motor Corp Formation of inversely cambered blank material by drawing
JPS60190822A (en) * 1983-12-19 1985-09-28 グレタ−ク　アクチエンゲゼルシヤフト Method and device for evaluating quality of printing and color measuring strip
JPH03181827A (en) * 1989-12-12 1991-08-07 Nkk Corp Apparatus for measuring hue
JP2008100240A (en) * 2006-10-17 2008-05-01 Honda Motor Co Ltd Method and apparatus for press work
JP2010167480A (en) * 2009-01-26 2010-08-05 Honda Motor Co Ltd Press-forming die and press-forming method
US8429946B2 (en) 2006-10-17 2013-04-30 Honda Motor Co., Ltd. Press-working method, and press-working apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5959702B1 (en) * 2015-08-05 2016-08-02 株式会社Uacj Manufacturing method of press-molded product and press-molding die
JP6753502B1 (en) * 2019-09-30 2020-09-09 Ｊｆｅスチール株式会社 Press forming method and press forming equipment for automobile outer panel
CN114502296B (en) 2019-10-02 2025-03-11 杰富意钢铁株式会社 Stamping method and device for forming outer panel of automobile
JP6996605B1 (en) 2020-10-26 2022-02-04 Ｊｆｅスチール株式会社 Press forming method and press forming equipment for automobile outer panel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59104222A (en) * 1982-12-06 1984-06-16 Toyota Motor Corp Formation of inversely cambered blank material by drawing
JPS60190822A (en) * 1983-12-19 1985-09-28 グレタ−ク　アクチエンゲゼルシヤフト Method and device for evaluating quality of printing and color measuring strip
JPH0513245B2 (en) * 1983-12-19 1993-02-22 Gretag Ag
JPH03181827A (en) * 1989-12-12 1991-08-07 Nkk Corp Apparatus for measuring hue
JP2008100240A (en) * 2006-10-17 2008-05-01 Honda Motor Co Ltd Method and apparatus for press work
US8429946B2 (en) 2006-10-17 2013-04-30 Honda Motor Co., Ltd. Press-working method, and press-working apparatus
JP2010167480A (en) * 2009-01-26 2010-08-05 Honda Motor Co Ltd Press-forming die and press-forming method

Also Published As

Publication number Publication date
JPS6358652B2 (en) 1988-11-16

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