JPS5728635A - Method of boring tapered hole in metallic plate - Google Patents

Method of boring tapered hole in metallic plate

Info

Publication number
JPS5728635A
JPS5728635A JP10297780A JP10297780A JPS5728635A JP S5728635 A JPS5728635 A JP S5728635A JP 10297780 A JP10297780 A JP 10297780A JP 10297780 A JP10297780 A JP 10297780A JP S5728635 A JPS5728635 A JP S5728635A
Authority
JP
Japan
Prior art keywords
hole
punch
metallic plate
square
tapered
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
JP10297780A
Other languages
Japanese (ja)
Inventor
Toru Sawami
Gosuke Yagishita
Fumihiko Takiguchi
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.)
TAKIGUCHI SEISAKUSHO KK
Anritsu Corp
Original Assignee
TAKIGUCHI SEISAKUSHO KK
Anritsu Corp
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 TAKIGUCHI SEISAKUSHO KK, Anritsu Corp filed Critical TAKIGUCHI SEISAKUSHO KK
Priority to JP10297780A priority Critical patent/JPS5728635A/en
Publication of JPS5728635A publication Critical patent/JPS5728635A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the working hours of piercing a square tapered hole, by pressing the punched out square hole in the metallic plate with a tapered die to expand the surplus edge of the lower inside of the hole and then by piercing that surplus edge.
CONSTITUTION: A hole 12 is blanked in a metallic plate 10 by a square sectioned punch 11. Then a punch 13 having a cut head pyramid with its tapered face 13a larger in its maximum dimension and smaller in its minimum dimensions than that of the periphery of the hole 12, presses the periphery of the hole 12 bored in a metallic plate 10. Then the periphery 14 of the hole 12 is crashed to form a tapered surface 15 expanding its surplus edge 17 downward of the hole between a die 16 and the tip 13b of the punch 13. The surplus edge 17 is cut out by a square punch 18 having smaller size than that of the punch 11 to form a square hole 12 with its tapered rim 15 around its periphery.
COPYRIGHT: (C)1982,JPO&Japio
JP10297780A 1980-07-26 1980-07-26 Method of boring tapered hole in metallic plate Pending JPS5728635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10297780A JPS5728635A (en) 1980-07-26 1980-07-26 Method of boring tapered hole in metallic plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10297780A JPS5728635A (en) 1980-07-26 1980-07-26 Method of boring tapered hole in metallic plate

Publications (1)

Publication Number Publication Date
JPS5728635A true JPS5728635A (en) 1982-02-16

Family

ID=14341794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10297780A Pending JPS5728635A (en) 1980-07-26 1980-07-26 Method of boring tapered hole in metallic plate

Country Status (1)

Country Link
JP (1) JPS5728635A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150553A (en) * 1983-02-18 1984-08-28 富士ゼロックス株式会社 Paper shredding apparatus
JPS59150552A (en) * 1983-02-18 1984-08-28 富士ゼロックス株式会社 Paper shredding apparatus
JPS6074994U (en) * 1983-10-27 1985-05-25 有限会社マル井技研工業 Slitter
JPS6277545U (en) * 1985-10-31 1987-05-18
JPH03120921U (en) * 1990-03-16 1991-12-11
US5263353A (en) * 1992-06-29 1993-11-23 The Whitaker Corporation Punch and die apparatus for producing flat stamped contact devices having improved contact edge surfaces
WO2009041217A1 (en) * 2007-09-26 2009-04-02 Aisin Aw Co., Ltd. Member having chamfered through-hole and method of producing the same
KR100903168B1 (en) 2009-02-02 2009-06-17 성기태 Manufacturing method of bearing retainer for transmission
EP3156172A1 (en) * 2015-10-12 2017-04-19 BAE Systems PLC Metal object production
US11124021B2 (en) * 2012-02-07 2021-09-21 Geo Plastics Wheel assemblies removable without tools

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5041760A (en) * 1973-08-18 1975-04-16
JPS52132490A (en) * 1976-04-30 1977-11-07 Yoshitaka Nakanishi Method of sinking counter sink in plate blank

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5041760A (en) * 1973-08-18 1975-04-16
JPS52132490A (en) * 1976-04-30 1977-11-07 Yoshitaka Nakanishi Method of sinking counter sink in plate blank

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150553A (en) * 1983-02-18 1984-08-28 富士ゼロックス株式会社 Paper shredding apparatus
JPS59150552A (en) * 1983-02-18 1984-08-28 富士ゼロックス株式会社 Paper shredding apparatus
JPS6074994U (en) * 1983-10-27 1985-05-25 有限会社マル井技研工業 Slitter
JPS6277545U (en) * 1985-10-31 1987-05-18
JPH0434677Y2 (en) * 1985-10-31 1992-08-18
JPH03120921U (en) * 1990-03-16 1991-12-11
US5263353A (en) * 1992-06-29 1993-11-23 The Whitaker Corporation Punch and die apparatus for producing flat stamped contact devices having improved contact edge surfaces
WO2009041217A1 (en) * 2007-09-26 2009-04-02 Aisin Aw Co., Ltd. Member having chamfered through-hole and method of producing the same
JP2009078286A (en) * 2007-09-26 2009-04-16 Aisin Aw Co Ltd Member having chamfered through hole, and method of manufacturing the same
KR100903168B1 (en) 2009-02-02 2009-06-17 성기태 Manufacturing method of bearing retainer for transmission
WO2010087679A2 (en) * 2009-02-02 2010-08-05 Seong Young Je Method for manufacturing transmission bearing retainer
WO2010087679A3 (en) * 2009-02-02 2010-11-25 Seong Young Je Method for manufacturing transmission bearing retainer
US11124021B2 (en) * 2012-02-07 2021-09-21 Geo Plastics Wheel assemblies removable without tools
EP3156172A1 (en) * 2015-10-12 2017-04-19 BAE Systems PLC Metal object production

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