JPS63169209U

JPS63169209U -

Info

Publication number: JPS63169209U
Application number: JP6236787U
Authority: JP
Priority date: 1987-04-23
Filing date: 1987-04-23
Publication date: 1988-11-04

Description

[Brief explanation of the drawing]

第１図は従来技術に係るエンドミルの概略斜視
図、第２図は本考案に係るエンドミルの分解斜視
図、第３図は本考案に係るエンドミルの側面図、
第４図は本考案に係るエンドミルで切削作業を行
う際の説明を示す斜視図である。２０…エンドミル、２２…ミル本体、２４…チ
ツプ、２８…先端部、３０…凹部、３２ａ，３２
ｂ，３４ａ，３４ｂ，３６ａ，３６ｂ…逃げ面、
３８…ＣＢＮ材、４０ａ，４０ｂ…超硬材、４６
ａ，４６ｂ…切刃。 FIG. 1 is a schematic perspective view of an end mill according to the prior art, FIG. 2 is an exploded perspective view of the end mill according to the present invention, and FIG. 3 is a side view of the end mill according to the present invention.
FIG. 4 is a perspective view illustrating a cutting operation performed using the end mill according to the present invention. 20... End mill, 22... Mill body, 24... Chip, 28... Tip, 30... Recess, 32a, 32
b, 34a, 34b, 36a, 36b... flank surface,
38... CBN material, 40a, 40b... Carbide material, 46
a, 46b...cutting blade.

Claims

[Claims for Utility Model Registration] (1) A mill body that is connected to a main shaft and driven to rotate, and a cutting tip that is fixed to the mill body, and a cutting tip that passes through the center at the end of the mill body and has a diameter The chip is notched in the direction to form a recess for attaching the chip, and the chip has at least a semicircular outer circumference larger than the diameter of the mill body, and the center of rotation of the mill body is formed at both outer peripheral edges of the chip. An end mill characterized in that at least a pair of cutting blades are formed at positions that are point symmetrical with respect to each other, and each of the cutting blades is formed integrally and continuously. (2) Utility Model Registration In the end mill described in claim 1, the cutting tip includes a substantially semi-ring-shaped CBN material and a cutting tip fixed to both sides of the CBN material to hold the CBN material. consisting of first and second carbide materials each having a semicircular outer periphery;
forming grooves on the outer peripheries of the first and second cemented carbide materials oriented in directions away from each other from the center of rotation;
An end mill in which first and second cutting blades are integrally and continuously configured by exposing the outer circumferential ridgeline of a CBN material to the outside from each groove. (3) In the end mill according to claim 2 of the utility model registration, first and second slopes are formed on the outer circumferential portion of the CBN material and are inclined in different directions with the top thereof as a boundary, so that the CBN An end mill comprising first and second cutting blades oriented in different directions on the outer periphery of a material. (4) Utility Model Registration The end mill according to claim 1, wherein the end of the mill body in which the tip mounting recess is provided has a hemispherical shape, and a relief surface is formed at the end.