JPH0166919U - - Google Patents
Info
- Publication number
- JPH0166919U JPH0166919U JP1987162800U JP16280087U JPH0166919U JP H0166919 U JPH0166919 U JP H0166919U JP 1987162800 U JP1987162800 U JP 1987162800U JP 16280087 U JP16280087 U JP 16280087U JP H0166919 U JPH0166919 U JP H0166919U
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- circumference
- tip
- hole
- arcuate portion
- 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
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Drilling Tools (AREA)
Description
第１図は本考案の一実施例を示す筒状体ｂの略
端面図である。第２図は筒状体ｂの他の実施例を
示す略端面図であり、第３図は筒状体ｂについて
又他の実施例を示す略端面図である。第４図は更
に他の実施例を示す略端面図である。第５図Ａは
従来例を示す全体斜視図であり、第５図Ｂはその
正面図である。
ｂ……筒状体、１……第１外周部、２……第２
外周部、３，３′……第３外周部。
FIG. 1 is a schematic end view of a cylindrical body b showing an embodiment of the present invention. FIG. 2 is a schematic end view showing another embodiment of the cylindrical body b, and FIG. 3 is a schematic end view showing another embodiment of the cylindrical body b. FIG. 4 is a schematic end view showing still another embodiment. FIG. 5A is an overall perspective view showing a conventional example, and FIG. 5B is a front view thereof. b...Cylindrical body, 1...First outer peripheral part, 2...Second
Outer periphery, 3, 3'... third outer periphery.
Claims (1)
の筒状体を回転させる事により、被切削物に円形
の穴を明けるホールソーにおいて、該筒状体の少
なくとも先端側部分が、その横断面において、目
的孔径の周率とほぼ同一の周率を有する円弧部分
と、異なる周率の円弧部分とを有してなる事を特
徴とするホールソー。 In a hole saw, in which a cutting blade is provided on the tip edge of the tip of a cylindrical body, and the cylindrical body is rotated to make a circular hole in a workpiece, at least the tip side portion of the cylindrical body is 1. A hole saw comprising, in a surface thereof, an arcuate portion having a circumference approximately the same as the circumference of the target hole diameter, and an arcuate portion having a different circumference.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987162800U JPH071219Y2 (en) | 1987-10-23 | 1987-10-23 | Hallso |
| EP88900114A EP0295309B1 (en) | 1986-12-18 | 1987-12-18 | Hole saw |
| PCT/JP1987/000992 WO1988004588A1 (en) | 1986-12-18 | 1987-12-18 | Hole saw |
| US07/251,221 US5007777A (en) | 1986-12-18 | 1987-12-18 | Hole saw |
| KR1019880700991A KR950011666B1 (en) | 1986-12-18 | 1987-12-18 | Hole saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987162800U JPH071219Y2 (en) | 1987-10-23 | 1987-10-23 | Hallso |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0166919U true JPH0166919U (en) | 1989-04-28 |
| JPH071219Y2 JPH071219Y2 (en) | 1995-01-18 |
Family
ID=31446957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987162800U Expired - Lifetime JPH071219Y2 (en) | 1986-12-18 | 1987-10-23 | Hallso |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH071219Y2 (en) |
-
1987
- 1987-10-23 JP JP1987162800U patent/JPH071219Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH071219Y2 (en) | 1995-01-18 |