JPS6235746Y2 - - Google Patents
Info
- Publication number
- JPS6235746Y2 JPS6235746Y2 JP7289682U JP7289682U JPS6235746Y2 JP S6235746 Y2 JPS6235746 Y2 JP S6235746Y2 JP 7289682 U JP7289682 U JP 7289682U JP 7289682 U JP7289682 U JP 7289682U JP S6235746 Y2 JPS6235746 Y2 JP S6235746Y2
- Authority
- JP
- Japan
- Prior art keywords
- circumferential groove
- base metal
- drill bit
- groove
- auxiliary discharge
- 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.)
- Expired
Links
- 239000010953 base metal Substances 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005255 carburizing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7289682U JPS58176189U (ja) | 1982-05-17 | 1982-05-17 | 衝撃式ドリル用ビツト |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7289682U JPS58176189U (ja) | 1982-05-17 | 1982-05-17 | 衝撃式ドリル用ビツト |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58176189U JPS58176189U (ja) | 1983-11-25 |
| JPS6235746Y2 true JPS6235746Y2 (ru) | 1987-09-10 |
Family
ID=30082434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7289682U Granted JPS58176189U (ja) | 1982-05-17 | 1982-05-17 | 衝撃式ドリル用ビツト |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58176189U (ru) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100312094B1 (ko) * | 1999-04-17 | 2001-11-03 | 김동남 | 굴착기 비트 |
-
1982
- 1982-05-17 JP JP7289682U patent/JPS58176189U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58176189U (ja) | 1983-11-25 |
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