JPS6386193U - - Google Patents
Info
- Publication number
- JPS6386193U JPS6386193U JP17768786U JP17768786U JPS6386193U JP S6386193 U JPS6386193 U JP S6386193U JP 17768786 U JP17768786 U JP 17768786U JP 17768786 U JP17768786 U JP 17768786U JP S6386193 U JPS6386193 U JP S6386193U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- bit body
- thickness
- lock bit
- portion located
- 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.)
- Granted
Links
Landscapes
- Earth Drilling (AREA)
Description
第１図および第２図はこの考案の実施例を示す
もので、第１図は第１実施例のロツクビツトを先
端側から見た正面図、第２図は第２実施例のロツ
クビツトを先端側から見た正面図である。第３図
および第４図は従来のロツクビツトを示すもので
、第３図は従来のロツクビツトを先端側から見た
正面図、第４図は一部を破断して示した側面図で
ある。
Ａ，Ｂ……ロツクビツト、１……ビツト本体、
１０……超硬チツプ、１０ａ……内側チツプ部、
１０ｂ……外側チツプ部、２０……超硬チツプ、
２０ａ……内側チツプ部、２０ｂ……外側チツプ
部。
Figures 1 and 2 show embodiments of this invention. Figure 1 is a front view of the lock bit of the first embodiment seen from the tip side, and Figure 2 is a front view of the lock bit of the second embodiment seen from the tip side. FIG. 3 and 4 show a conventional lock bit. FIG. 3 is a front view of the conventional lock bit as seen from the tip side, and FIG. 4 is a partially cutaway side view. A, B...Lock bit, 1...Bit body,
10... Carbide tip, 10a... Inner tip part,
10b...outer tip portion, 20...carbide tip,
20a...inner tip portion, 20b...outer tip portion.
Claims (1)
状に取り付けてなるロツクビツトにおいて、前記
超硬チツプはそれぞれ前記ビツト本体の中心側に
位置する内側チツプ部と、その外周側に位置する
外側チツプ部とに分割されており、かつ前記外側
チツプ部の厚み寸法は前記内側チツプ部の厚み寸
法より大きくされていることを特徴とするロツク
ビツト。 In a lock bit in which a plurality of carbide tips are radially attached to the tip of the bit body, each of the carbide tips has an inner tip portion located at the center of the bit body and an outer tip portion located at the outer periphery of the bit body. A lock bit characterized in that the lock bit is divided into two parts, and the thickness of the outer tip part is larger than the thickness of the inner tip part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17768786U JPH04149Y2 (en) | 1986-11-19 | 1986-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17768786U JPH04149Y2 (en) | 1986-11-19 | 1986-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6386193U true JPS6386193U (en) | 1988-06-06 |
| JPH04149Y2 JPH04149Y2 (en) | 1992-01-06 |
Family
ID=31119124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17768786U Expired JPH04149Y2 (en) | 1986-11-19 | 1986-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04149Y2 (en) |
-
1986
- 1986-11-19 JP JP17768786U patent/JPH04149Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04149Y2 (en) | 1992-01-06 |