JPS5728635A - Method of boring tapered hole in metallic plate - Google Patents
Method of boring tapered hole in metallic plateInfo
- 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
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
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)
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)
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 |
-
1980
- 1980-07-26 JP JP10297780A patent/JPS5728635A/en active Pending
Patent Citations (2)
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)
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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