JPH01289520A - Method for punching metallic work sheet by press - Google Patents

Method for punching metallic work sheet by press

Info

Publication number
JPH01289520A
JPH01289520A JP11888688A JP11888688A JPH01289520A JP H01289520 A JPH01289520 A JP H01289520A JP 11888688 A JP11888688 A JP 11888688A JP 11888688 A JP11888688 A JP 11888688A JP H01289520 A JPH01289520 A JP H01289520A
Authority
JP
Japan
Prior art keywords
contraction
die
bulging
press
punch
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
JP11888688A
Other languages
Japanese (ja)
Inventor
Yoshihisa Nagamine
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.)
Shinko Electric Industries Co Ltd
Original Assignee
Shinko Electric Industries 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 Shinko Electric Industries Co Ltd filed Critical Shinko Electric Industries Co Ltd
Priority to JP11888688A priority Critical patent/JPH01289520A/en
Publication of JPH01289520A publication Critical patent/JPH01289520A/en
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To prevent scrap from jamming and rising by providing a contraction part bulging to the internal part of a small hole and using a punch having a recess part formed corresponding to the contraction part and a die having a bulging part formed on an internal wall surface corresponding to the contraction part.
CONSTITUTION: The recess part 12a corresponding to the shape of the contraction part 10 of a small hole is provided in the punch 12 while the bulging part 14a corresponding to the shape of the contraction part 10 is provided in the die 14. In a punching time by a press, a metallic work sheet is punched by a punch 12 and the scrap having the contraction part is pushed down into the punched hole of the die 14. At this time, the scraps are lowered as their contraction parts are slid along the bulging part 14a of the die 14 and the scraps are prevented from inclining and lowered as they are stacked in parallel.
COPYRIGHT: (C)1989,JPO&Japio
JP11888688A 1988-05-16 1988-05-16 Method for punching metallic work sheet by press Granted JPH01289520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11888688A JPH01289520A (en) 1988-05-16 1988-05-16 Method for punching metallic work sheet by press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11888688A JPH01289520A (en) 1988-05-16 1988-05-16 Method for punching metallic work sheet by press

Publications (1)

Publication Number Publication Date
JPH01289520A true JPH01289520A (en) 1989-11-21

Family

ID=14747577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11888688A Granted JPH01289520A (en) 1988-05-16 1988-05-16 Method for punching metallic work sheet by press

Country Status (1)

Country Link
JP (1) JPH01289520A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03184639A (en) * 1989-12-11 1991-08-12 Mitsui High Tec Inc Punch for die assembly
CN102941276A (en) * 2012-11-19 2013-02-27 华一精密机械(昆山)有限公司 Special-shaped punch type waste material jumping prevention mold
JP2016073109A (en) * 2014-09-30 2016-05-09 株式会社三井ハイテック Laminated core and manufacturing method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03184639A (en) * 1989-12-11 1991-08-12 Mitsui High Tec Inc Punch for die assembly
CN102941276A (en) * 2012-11-19 2013-02-27 华一精密机械(昆山)有限公司 Special-shaped punch type waste material jumping prevention mold
JP2016073109A (en) * 2014-09-30 2016-05-09 株式会社三井ハイテック Laminated core and manufacturing method thereof

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