JPS5540073A - Burring work method of metallic plate - Google Patents
Burring work method of metallic plateInfo
- Publication number
- JPS5540073A JPS5540073A JP11332778A JP11332778A JPS5540073A JP S5540073 A JPS5540073 A JP S5540073A JP 11332778 A JP11332778 A JP 11332778A JP 11332778 A JP11332778 A JP 11332778A JP S5540073 A JPS5540073 A JP S5540073A
- Authority
- JP
- Japan
- Prior art keywords
- diameter part
- hole
- punch
- small diameter
- metallic plate
- 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
Links
Landscapes
- Punching Or Piercing (AREA)
Abstract
PURPOSE: To make it possible to efficiently and remarkably perform the hole expansion work by utilizing the regular punch consisting of a large diameter part, a taper part and a small diameter part, and also the dies which have the hole corresponding to the foregoing.
CONSTITUTION: The punch 9 has a cylindrical large diameter part 9a, a taper part 9b following to this large diameter part, and also a small diameter part 9c following to the foregoing. In case of working, the metallic plate 1 which has the beforehand hole 2 corresponding to the small diameter part 9c of the punch 9 is held by the dies 10 and the keep plate 11 in advance. Subsequently, when the puch 9 is inserted into the beforehand hole 2 and is pushed forward in the direction as indicated with an arrow, the metallic plate 1 is burred, and the cylindrical part of the regular inside diameter is molded along the lower hole 2. In this case, since large pressure works upon the dies 10, at first the burring work is performed at the small diameter part 9c of the punch 9, and the taper part 9b, and the secondary working is made so that coiling can be performed following to the foregoing, by which efficient and large working can be carried out.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11332778A JPS5540073A (en) | 1978-09-14 | 1978-09-14 | Burring work method of metallic plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11332778A JPS5540073A (en) | 1978-09-14 | 1978-09-14 | Burring work method of metallic plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5540073A true JPS5540073A (en) | 1980-03-21 |
JPS6222694B2 JPS6222694B2 (en) | 1987-05-19 |
Family
ID=14609420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11332778A Granted JPS5540073A (en) | 1978-09-14 | 1978-09-14 | Burring work method of metallic plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5540073A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56136923A (en) * | 1980-03-28 | 1981-10-26 | Nhk Spring Co Ltd | Hardening method for plate spring |
JPS5780901A (en) * | 1980-11-07 | 1982-05-20 | Topy Ind Ltd | Manufacture of automobile wheel disc |
US5606888A (en) * | 1995-07-14 | 1997-03-04 | The Whitaker Corp. | Method of forming relatively hard materials |
-
1978
- 1978-09-14 JP JP11332778A patent/JPS5540073A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56136923A (en) * | 1980-03-28 | 1981-10-26 | Nhk Spring Co Ltd | Hardening method for plate spring |
JPS5780901A (en) * | 1980-11-07 | 1982-05-20 | Topy Ind Ltd | Manufacture of automobile wheel disc |
US5606888A (en) * | 1995-07-14 | 1997-03-04 | The Whitaker Corp. | Method of forming relatively hard materials |
Also Published As
Publication number | Publication date |
---|---|
JPS6222694B2 (en) | 1987-05-19 |
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