JPS54157390A - Method and device for drilling holes whose openings are not circular - Google Patents
Method and device for drilling holes whose openings are not circularInfo
- Publication number
- JPS54157390A JPS54157390A JP6565278A JP6565278A JPS54157390A JP S54157390 A JPS54157390 A JP S54157390A JP 6565278 A JP6565278 A JP 6565278A JP 6565278 A JP6565278 A JP 6565278A JP S54157390 A JPS54157390 A JP S54157390A
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- circular
- holes whose
- whose openings
- drilling holes
- 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 drill highly accurate holes whose openings are not circular by moving a conical cutter up and down or swinging it right to left and so forth while the cutter rotates.
CONSTITUTION: A cutter 1 which has conical cutting edge 1a rotates and moves up and down, and right and left to drill a wole shose opening is not circular on a work 2 such as a steel sheet. If the cutter 1 moves along a V-shaped locus 4, then a hole 3 having a semi-rhombic contour is drilled; while the cutter 1 moves along a half circle trajectory, a hole having an oval shaped contour is drilled in the work 2.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6565278A JPS54157390A (en) | 1978-06-02 | 1978-06-02 | Method and device for drilling holes whose openings are not circular |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6565278A JPS54157390A (en) | 1978-06-02 | 1978-06-02 | Method and device for drilling holes whose openings are not circular |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54157390A true JPS54157390A (en) | 1979-12-12 |
Family
ID=13293142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6565278A Pending JPS54157390A (en) | 1978-06-02 | 1978-06-02 | Method and device for drilling holes whose openings are not circular |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54157390A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4443920A (en) * | 1981-09-08 | 1984-04-24 | Oliver John P | Method of manufacturing a gate valve body |
JPH01222810A (en) * | 1988-01-27 | 1989-09-06 | Iseki Tory Tech Inc | Method and device for machining pipe |
-
1978
- 1978-06-02 JP JP6565278A patent/JPS54157390A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4443920A (en) * | 1981-09-08 | 1984-04-24 | Oliver John P | Method of manufacturing a gate valve body |
JPH01222810A (en) * | 1988-01-27 | 1989-09-06 | Iseki Tory Tech Inc | Method and device for machining pipe |
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