JPS53114353A - Forming work method for plate material - Google Patents

Forming work method for plate material

Info

Publication number
JPS53114353A
JPS53114353A JP526478A JP526478A JPS53114353A JP S53114353 A JPS53114353 A JP S53114353A JP 526478 A JP526478 A JP 526478A JP 526478 A JP526478 A JP 526478A JP S53114353 A JPS53114353 A JP S53114353A
Authority
JP
Japan
Prior art keywords
plate material
work method
forming work
punched part
punching
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
JP526478A
Other languages
Japanese (ja)
Other versions
JPS5733707B2 (en
Inventor
Akira Nakazawa
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 JP526478A priority Critical patent/JPS5733707B2/ja
Publication of JPS53114353A publication Critical patent/JPS53114353A/en
Publication of JPS5733707B2 publication Critical patent/JPS5733707B2/ja
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the fine cutting in a punching operation and a sag at an edge from occurring, by intentionally shifting the corresponding edges of the 1st punched part and 2nd punched part as to multi-process punching using a press pattern.
COPYRIGHT: (C)1978,JPO&Japio
JP526478A 1978-01-23 1978-01-23 Expired JPS5733707B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP526478A JPS5733707B2 (en) 1978-01-23 1978-01-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP526478A JPS5733707B2 (en) 1978-01-23 1978-01-23

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP16636884A Division JPS6235271B2 (en) 1984-08-10 1984-08-10

Publications (2)

Publication Number Publication Date
JPS53114353A true JPS53114353A (en) 1978-10-05
JPS5733707B2 JPS5733707B2 (en) 1982-07-19

Family

ID=11606361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP526478A Expired JPS5733707B2 (en) 1978-01-23 1978-01-23

Country Status (1)

Country Link
JP (1) JPS5733707B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486948A (en) * 1980-08-20 1984-12-11 Nippon Electric Co., Ltd. Method for forming lead frame for integrated circuit devices
JPH01133340A (en) * 1987-11-19 1989-05-25 Mitsui High Tec Inc Lead frame and manufacture thereof
JPH03181160A (en) * 1989-12-11 1991-08-07 Mitsui High Tec Inc Lead frame for semiconductor device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01119411U (en) * 1988-01-25 1989-08-14

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486948A (en) * 1980-08-20 1984-12-11 Nippon Electric Co., Ltd. Method for forming lead frame for integrated circuit devices
JPH01133340A (en) * 1987-11-19 1989-05-25 Mitsui High Tec Inc Lead frame and manufacture thereof
JPH03181160A (en) * 1989-12-11 1991-08-07 Mitsui High Tec Inc Lead frame for semiconductor device

Also Published As

Publication number Publication date
JPS5733707B2 (en) 1982-07-19

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