JPS6391583U - - Google Patents
Info
- Publication number
- JPS6391583U JPS6391583U JP18307786U JP18307786U JPS6391583U JP S6391583 U JPS6391583 U JP S6391583U JP 18307786 U JP18307786 U JP 18307786U JP 18307786 U JP18307786 U JP 18307786U JP S6391583 U JPS6391583 U JP S6391583U
- Authority
- JP
- Japan
- Prior art keywords
- recess
- tip
- distal end
- periphery
- circumferential edge
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Description
第１図および第２図は、この考案の一実施例を
示す図であり、第１図は、ボタンビツトの断面図
、第２図は、ボタンビツトの要部の断面図、第３
図および第４図はボタンビツトの効果を説明する
ための図、第５図および第６図は従来のボタンビ
ツトの一例を示す図であり、第５図は、ボタンビ
ツトの平面図、第６図は、第５図中の―線に
沿う矢視断面図である。
１０……ビツト本体、１１……凹部、１２……
刃体、１２ａ……取付部、１２ｂ……穿孔部、１
２ｃ……凹湾曲面。
1 and 2 are views showing one embodiment of this invention, in which FIG. 1 is a cross-sectional view of a button bit, FIG. 2 is a cross-sectional view of the main part of the button bit, and FIG.
5 and 6 are diagrams showing an example of a conventional button bit. FIG. 5 is a plan view of the button bit, and FIG. 6 is a diagram for explaining the effect of the button bit. 5 is a sectional view taken along the line - in FIG. 5. FIG. 10...bit body, 11...recess, 12...
Blade body, 12a...Mounting part, 12b...Drilling part, 1
2c...Concave curved surface.
Claims (1)
ツト本体と、後端部に上記凹部に締まり嵌められ
るほぼ円柱状の取付部が形成され、先端部に上記
ビツト本体の凹部から突出した略半球状の穿孔部
が形成された刃体とを備えたボタンビツトにおい
て、上記取付部を上記穿孔部より大径に形成する
と共に、上記取付部の先端周縁と上記穿孔部の周
縁との間に、上記取付部の先端周縁側から上記穿
孔部の周縁側へ向かうに従つて漸次先端側へ向か
うように形成され、かつ上記穿孔部に接する凹湾
曲面を形成したことを特徴とするボタンビツト。 The bit body has a recess with a circular cross section formed at the tip, an approximately cylindrical mounting portion that tightly fits into the recess is formed at the rear end, and a roughly hemispherical part at the tip that protrudes from the recess of the bit body. In the button bit, the mounting part is formed to have a larger diameter than the perforation part, and the above-mentioned mounting part is formed between the tip periphery of the mounting part and the periphery of the perforation part. A button bit characterized in that a concave curved surface is formed so as to gradually move toward the distal end side from the circumferential edge of the distal end of the attachment part to the circumferential edge of the perforated part, and is in contact with the perforated part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986183077U JPH0423989Y2 (en) | 1986-11-28 | 1986-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986183077U JPH0423989Y2 (en) | 1986-11-28 | 1986-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6391583U true JPS6391583U (en) | 1988-06-14 |
| JPH0423989Y2 JPH0423989Y2 (en) | 1992-06-04 |
Family
ID=31129477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986183077U Expired JPH0423989Y2 (en) | 1986-11-28 | 1986-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0423989Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014196616A (en) * | 2013-03-29 | 2014-10-16 | 三菱マテリアル株式会社 | Drilling bit |
| JP2020076299A (en) * | 2018-09-28 | 2020-05-21 | 三菱マテリアル株式会社 | Drilling chip and drilling bit |
| US11821264B2 (en) | 2018-09-28 | 2023-11-21 | Mitsubishi Materials Corporation | Drilling tip and drill bit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6278394A (en) * | 1985-09-02 | 1987-04-10 | サントレ−ド リミテイド | Button insert for rock drill bite |
-
1986
- 1986-11-28 JP JP1986183077U patent/JPH0423989Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6278394A (en) * | 1985-09-02 | 1987-04-10 | サントレ−ド リミテイド | Button insert for rock drill bite |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014196616A (en) * | 2013-03-29 | 2014-10-16 | 三菱マテリアル株式会社 | Drilling bit |
| JP2020076299A (en) * | 2018-09-28 | 2020-05-21 | 三菱マテリアル株式会社 | Drilling chip and drilling bit |
| US11821264B2 (en) | 2018-09-28 | 2023-11-21 | Mitsubishi Materials Corporation | Drilling tip and drill bit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0423989Y2 (en) | 1992-06-04 |