JPH0270820U - - Google Patents
Info
- Publication number
- JPH0270820U JPH0270820U JP14647188U JP14647188U JPH0270820U JP H0270820 U JPH0270820 U JP H0270820U JP 14647188 U JP14647188 U JP 14647188U JP 14647188 U JP14647188 U JP 14647188U JP H0270820 U JPH0270820 U JP H0270820U
- Authority
- JP
- Japan
- Prior art keywords
- blade part
- circumferential
- central
- tip surface
- tip
- 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
- 238000005553 drilling Methods 0.000 description 1
Landscapes
- Punching Or Piercing (AREA)
Description
第１図は本考案による穴明け用ポンチの一実施
例を示す部分断面を含む側面図、第２図は穴明け
用ポンチの先端面を示す正面図、第３図は本考案
による穴明け用ポンチの作用を説明するための説
明断面図である。
２０…ポンチ部、２１…中央刃部、２３…円周
刃部、２５…円周溝。
FIG. 1 is a side view including a partial cross section showing an embodiment of the punch for drilling according to the present invention, FIG. It is an explanatory sectional view for explaining the action of a punch. 20... Punch part, 21... Central blade part, 23... Circumferential blade part, 25... Circumferential groove.
Claims (1)
央刃部と、前記先端面の外周縁に沿つて形成され
た円周刃部と、前記中央刃部と円周刃部との間に
形成された円周溝と、からなり、前記中央刃部の
先端は円周刃部より突出して形成されている穴明
け用ポンチ。 A triangular pyramidal central blade part provided at the center of the tip surface of the cylindrical body, a circumferential blade part formed along the outer periphery of the tip surface, and between the central blade part and the circumferential blade part. a circumferential groove formed therein; and a tip of the central blade part is formed to protrude from the circumferential blade part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14647188U JPH0270820U (en) | 1988-11-09 | 1988-11-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14647188U JPH0270820U (en) | 1988-11-09 | 1988-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0270820U true JPH0270820U (en) | 1990-05-30 |
Family
ID=31415992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14647188U Pending JPH0270820U (en) | 1988-11-09 | 1988-11-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0270820U (en) |
-
1988
- 1988-11-09 JP JP14647188U patent/JPH0270820U/ja active Pending