JPS5522439A - Blanking method for hole in square pipe - Google Patents
Blanking method for hole in square pipeInfo
- Publication number
- JPS5522439A JPS5522439A JP9471578A JP9471578A JPS5522439A JP S5522439 A JPS5522439 A JP S5522439A JP 9471578 A JP9471578 A JP 9471578A JP 9471578 A JP9471578 A JP 9471578A JP S5522439 A JPS5522439 A JP S5522439A
- Authority
- JP
- Japan
- Prior art keywords
- square pipe
- blade
- plate
- fixed
- press
- 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
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Punching Or Piercing (AREA)
Abstract
PURPOSE: To blank various holes on one side plate without using female dies and considerably improve workability by inserting a blade made of thin steel plate given with a shear angle on the bottom face into a square pipe from its one side.
CONSTITUTION: A flat plate form blade 1 given with a shear angle α at the bottom face of a thin steel plate of a square shape of a suitable size is prepared. This blade 1 is fixed by means of a keep plate 4 and set rivets 5 to the flat square form block 3 fixed to the die plate 2 of a press to form a blanking die. Next, the square pipe 6 to be blanked is fixed on the press table and the press is lowered, whereby the blade 1 is contacted and lowered to the square pipe 6, thus a desired hole 7 may be blanked in one process. Since no female dies are used, there is no need for removing the female dies after blanking, thus workability may be considerably improved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9471578A JPS5522439A (en) | 1978-07-31 | 1978-07-31 | Blanking method for hole in square pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9471578A JPS5522439A (en) | 1978-07-31 | 1978-07-31 | Blanking method for hole in square pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5522439A true JPS5522439A (en) | 1980-02-18 |
Family
ID=14117826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9471578A Pending JPS5522439A (en) | 1978-07-31 | 1978-07-31 | Blanking method for hole in square pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5522439A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5189A (en) * | 1974-06-20 | 1976-01-05 | Sakuhei Fujita | Magaripaipuniokeru anaakehoho |
JPS5246385B2 (en) * | 1972-04-15 | 1977-11-24 |
-
1978
- 1978-07-31 JP JP9471578A patent/JPS5522439A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5246385B2 (en) * | 1972-04-15 | 1977-11-24 | ||
JPS5189A (en) * | 1974-06-20 | 1976-01-05 | Sakuhei Fujita | Magaripaipuniokeru anaakehoho |
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