JPH0412583U - - Google Patents
Info
- Publication number
- JPH0412583U JPH0412583U JP5110490U JP5110490U JPH0412583U JP H0412583 U JPH0412583 U JP H0412583U JP 5110490 U JP5110490 U JP 5110490U JP 5110490 U JP5110490 U JP 5110490U JP H0412583 U JPH0412583 U JP H0412583U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- cutting
- cutting edge
- annular head
- 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 claims description 2
Landscapes
- Earth Drilling (AREA)
Description
第１図は、本考案リングビツトの一実施例を示
す一部を切欠した正面図、第２図は、その平面図
である。
１……ビツト本体、３……環状頭部、４……掘
削チツプ、６……切刃稜。
FIG. 1 is a partially cutaway front view showing an embodiment of the ring bit of the present invention, and FIG. 2 is a plan view thereof. 1... Bit body, 3... Annular head, 4... Drilling tip, 6... Cutting edge ridge.
Claims (1)
楔状の切刃稜６を有する掘削チツプ４が取付けら
れるようにしたリングビツトにおいて、 前記掘削チツプ４の切刃稜６は、回転方向を基
準にしたときに、その掘削作用角θが環状頭部３
の内端側で進む方向に向つていることを特徴とす
るリングビツト。[Claims for Utility Model Registration] The annular head 3 of the cylindrical bit body 1 includes:
In a ring bit to which a cutting tip 4 having a wedge-shaped cutting edge 6 is attached, the cutting edge 6 of the drilling tip 4 has a cutting operating angle θ equal to the annular head 3 when the rotation direction is taken as a reference.
A ring bit characterized in that the inner end of the bit faces in the forward direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5110490U JPH0412583U (en) | 1990-05-16 | 1990-05-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5110490U JPH0412583U (en) | 1990-05-16 | 1990-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0412583U true JPH0412583U (en) | 1992-01-31 |
Family
ID=31570240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5110490U Pending JPH0412583U (en) | 1990-05-16 | 1990-05-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0412583U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5130572A (en) * | 1974-09-07 | 1976-03-15 | Tone Boring Co | CHOKOGOKINSUIKANNOSEIZOHOHO OYOBI SONOSOCHI |
-
1990
- 1990-05-16 JP JP5110490U patent/JPH0412583U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5130572A (en) * | 1974-09-07 | 1976-03-15 | Tone Boring Co | CHOKOGOKINSUIKANNOSEIZOHOHO OYOBI SONOSOCHI |