JPS558355A - Press forming method - Google Patents

Press forming method

Info

Publication number
JPS558355A
JPS558355A JP8098778A JP8098778A JPS558355A JP S558355 A JPS558355 A JP S558355A JP 8098778 A JP8098778 A JP 8098778A JP 8098778 A JP8098778 A JP 8098778A JP S558355 A JPS558355 A JP S558355A
Authority
JP
Japan
Prior art keywords
blank
pressing
die
dies
bed
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
JP8098778A
Other languages
Japanese (ja)
Inventor
Takeshi Wada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8098778A priority Critical patent/JPS558355A/en
Publication of JPS558355A publication Critical patent/JPS558355A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make possible forming work above the pressing capacity for the blank by cutting press dies in parallel to the pressing direction to form a plurality of segmental dies and applying pressing force subsequently selectively to these segmental dies.
CONSTITUTION: An upper die to be mounted to a movable mounting bed 1 is segmented at the plane parallel to the pressing direction to form segmental dies 9 thru 13 which are then put in a mutually slidable state in a frame 14. On the other hand, operating plates 15, 16 are disposed in the clearances between the segmental dies 9 thru 13 and bed 1 movably in and out. A blank is placed between the stationary lower die 7 and segmental dies 9 thru 13 and first the operating plates 5, 16 are inserted between the head 1 and die 11 and the blank is pressed. Next, the operating plate 15 is inserted between the bed 1 and die 10 and the operating plate 16 between the bed 1 and die 12 and the blank is pressed. Thereafter, the abovementioned operations are done subsequently to the adjoining segmental dies to complete the pressing of the blank. Namely, the pressing which exceeds the capacity when performed once is made possible by doing this dividedly.
COPYRIGHT: (C)1980,JPO&Japio
JP8098778A 1978-07-05 1978-07-05 Press forming method Pending JPS558355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8098778A JPS558355A (en) 1978-07-05 1978-07-05 Press forming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8098778A JPS558355A (en) 1978-07-05 1978-07-05 Press forming method

Publications (1)

Publication Number Publication Date
JPS558355A true JPS558355A (en) 1980-01-21

Family

ID=13733842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8098778A Pending JPS558355A (en) 1978-07-05 1978-07-05 Press forming method

Country Status (1)

Country Link
JP (1) JPS558355A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6277628U (en) * 1985-11-06 1987-05-18
WO1999026737A1 (en) * 1997-11-26 1999-06-03 Ishikawajima-Harima Heavy Industries Co., Ltd. Apparatus and method for changing metal molds for plate thickness reducing presses, and press metal die
US6463652B1 (en) 1997-11-26 2002-10-15 Ishikawajima-Harima Heavy Industries Co., Ltd. Apparatus and methods for manufacturing hot rolled steel sheets

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6277628U (en) * 1985-11-06 1987-05-18
WO1999026737A1 (en) * 1997-11-26 1999-06-03 Ishikawajima-Harima Heavy Industries Co., Ltd. Apparatus and method for changing metal molds for plate thickness reducing presses, and press metal die
US6200245B1 (en) 1997-11-26 2001-03-13 Ishikawajima-Harima Heavy Industries Co., Ltd. Apparatus and method for changing dies
US6463652B1 (en) 1997-11-26 2002-10-15 Ishikawajima-Harima Heavy Industries Co., Ltd. Apparatus and methods for manufacturing hot rolled steel sheets

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