JPH0370240U

JPH0370240U -

Info

Publication number: JPH0370240U
Application number: JP13187589U
Authority: JP
Priority date: 1989-11-13
Filing date: 1989-11-13
Publication date: 1991-07-15
Anticipated expiration: 2003-06-16
Also published as: JPH0523544Y2

Description

[Brief explanation of the drawing]

第１図は一実施例のホールソーの分解斜視図、
第２図は同正面図、第３図は第２図の中央縦断面
図、第４図は同拡大底面図、第５図は切刃の拡大
斜視図、第６図Ａは切刃の径外方向からの斜視図
、第６図Ｂは切刃の径内方向からの斜視図、第７
図は他の実施例のホールソー底面図、第８図は第
８図の−線断面図、第９図は第７図の−
線断面図、第１０図は従来の切刃の断面図である
。１，１ａ，１ｂ……切刃、２……ボデイ、３…
…回転伝達軸、１１……先端面、１２……内周面
、１３……外周面、１４……前端面、１５……後
端面、１６，１７，４１，４２……傾斜面、２１
……縦切り込み、２２……横切り込み、２３……
溝部、３１……円柱体、３３……係止軸、ａ……
内周辺、ｂ……外周辺、ｃ……前先端面縁、ｄ…
…前内周面縁、ｅ……前外周面縁、ｆ……後先端
面縁、ｇ……後内周面縁、ｈ……後外周面縁、１
６ｂ……前傾斜縁、１７ｂ……後傾斜縁。 FIG. 1 is an exploded perspective view of a hole saw according to an embodiment;
Figure 2 is a front view of the same, Figure 3 is a central vertical sectional view of Figure 2, Figure 4 is an enlarged bottom view of the same, Figure 5 is an enlarged perspective view of the cutting blade, and Figure 6 A is the diameter of the cutting blade. Figure 6B is a perspective view from the outside, and Figure 7B is a perspective view from the inside of the cutting blade.
The figure is a bottom view of a hole saw of another embodiment, FIG. 8 is a sectional view taken along the line - - of FIG. 8, and FIG. 9 is a - line sectional view of FIG. 7.
A line sectional view, FIG. 10 is a sectional view of a conventional cutting blade. 1, 1a, 1b...cutting blade, 2...body, 3...
... Rotation transmission shaft, 11 ... Tip surface, 12 ... Inner peripheral surface, 13 ... Outer peripheral surface, 14 ... Front end surface, 15 ... Rear end surface, 16, 17, 41, 42 ... Inclined surface, 21
...Vertical cut, 22...Horizontal cut, 23...
Groove portion, 31... Cylindrical body, 33... Locking shaft, a...
Inner periphery, b...outer periphery, c...front tip surface edge, d...
...Front inner circumference edge, e...Front outer circumference edge, f...Rear tip edge, g...Rear inner circumference edge, h...Rear outer circumference edge, 1
6b...front inclined edge, 17b...rear inclined edge.

Claims

[Claims for Utility Model Registration] 1. A cylindrical body having a cutting edge at its tip;
A hole cutter for glass, which is equipped with a rotation transmission shaft provided on the proximal end side of the body, and whose cutting edge is composed of a plurality of cutting edges and a groove formed between each cutting edge, has a constant diameter. The standard shape of the cutting blade is defined by the arc-shaped distal end surface having a width in the direction, and the inner circumferential surface and outer circumferential surface extending from the inner and outer peripheries of the distal end surface toward the proximal end in parallel with the axis. and at least one of the cutting edges has an inclined surface in which the radial width of the cutting edge decreases toward the tip by cutting the inner circumferential surface at an angle with respect to the reference shape, a tip end surface edge whose front end surface on the advancing side with respect to the rotational direction has a radial width shorter than the reference shape; and the inclined surface edge formed on the inner peripheral surface side;
A hole cutter for glass, characterized in that it is defined by an outer circumferential edge that follows a standard shape. 2. The rotation transmission shaft has a cylindrical part on its distal end side, the proximal end of the body is removably fitted into the cylindrical part, and the cylindrical part and the body are connected via a rotation prevention mechanism. The hole cutter for glass according to claim 1, characterized by: