JPS62200788U - - Google Patents
Info
- Publication number
- JPS62200788U JPS62200788U JP8776186U JP8776186U JPS62200788U JP S62200788 U JPS62200788 U JP S62200788U JP 8776186 U JP8776186 U JP 8776186U JP 8776186 U JP8776186 U JP 8776186U JP S62200788 U JPS62200788 U JP S62200788U
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- excavation tool
- inclined surface
- tip
- attached
- 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 4
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims 1
Landscapes
- Earth Drilling (AREA)
Description
第１図はこの考案を適用すべき掘削用回転工具
の正面図、第２図はこの考案の削孔用ビツトの拡
大斜視図、第３図は従来のこの種ビツトの斜視図
で、第４図はその使用による磨耗の状態を示す斜
視図である。
なお図において、１…掘削用回転工具、２…ア
ーム、３…刃先本体、４…先端部、５…傾斜面、
６…後面側の面、７…超硬チツプ、８…上刃、９
…下刃、である。
Fig. 1 is a front view of a rotary drilling tool to which this invention is applied, Fig. 2 is an enlarged perspective view of a drilling bit of this invention, Fig. 3 is a perspective view of a conventional bit of this kind, and Fig. 4 is a perspective view of a conventional drilling bit of this kind. The figure is a perspective view showing the state of wear due to its use. In the figure, 1... rotary tool for excavation, 2... arm, 3... cutting edge body, 4... tip, 5... inclined surface,
6... Rear surface, 7... Carbide tip, 8... Upper blade, 9
...It is the lower blade.
Claims (1)
に形成されたアームに取り付けられる刃先本体の
うち特に最外周の刃先本体の先端部において前記
掘削工具の回転方向の前面側を傾斜面とし、かつ
後面側の面を平面状とすると共に、前記傾斜面の
外側隅角部に三角形状の超硬チツプを貼り付けも
しくは耐磨耗肉盛りを施こして成る削孔用ビツト
。 Among the cutting edge bodies attached to the radial or screw-shaped arm of a rotary excavation tool, the front side in the rotational direction of the excavation tool is an inclined surface, and the rear surface side is a sloped surface, especially at the tip of the cutting edge body on the outermost periphery. A drilling bit made of a flat surface and having a triangular carbide tip attached or abrasion-resistant padding applied to the outer corner of the inclined surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8776186U JPS62200788U (en) | 1986-06-11 | 1986-06-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8776186U JPS62200788U (en) | 1986-06-11 | 1986-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62200788U true JPS62200788U (en) | 1987-12-21 |
Family
ID=30945260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8776186U Pending JPS62200788U (en) | 1986-06-11 | 1986-06-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62200788U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS502103B1 (en) * | 1970-10-13 | 1975-01-23 | ||
| JPS615194A (en) * | 1984-02-09 | 1986-01-10 | 日本タングステン株式会社 | Earth auger bit |
-
1986
- 1986-06-11 JP JP8776186U patent/JPS62200788U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS502103B1 (en) * | 1970-10-13 | 1975-01-23 | ||
| JPS615194A (en) * | 1984-02-09 | 1986-01-10 | 日本タングステン株式会社 | Earth auger bit |