JPS58191914U

JPS58191914U - Trap pan type cutting tool

Info

Publication number: JPS58191914U
Application number: JP9005582U
Authority: JP
Inventors: 国森　永年
Original assignee: 住友電気工業株式会社
Priority date: 1982-06-14
Filing date: 1982-06-14
Publication date: 1983-12-20
Also published as: JPS6131773Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は、この考案の切削工具の一例を示す側面図、第
２図は同上の拡大正面図、第３図は第１図の工具を９０
°回転して見た側面図、第４図は、切刃の切削負担域を
示す線図、第５図はチップの他の実施例を示す斜視図、
第６図乃至第９図はチップのさらに他の実施例を示す正
面図である。１・・・シャンク部、２・・・円筒部、３・・・切屑排
出溝、４・・・本体、５．６・・・切刃チップ、５ａ、
　　５ａ・・・切刃、７．８・・・位置調整ねじ、９．
１０・・・ホルダ、１１・・・ボルト、１２・・・回り
止めキー。FIG. 1 is a side view showing an example of the cutting tool of this invention, FIG. 2 is an enlarged front view of the same, and FIG.
4 is a diagram showing the cutting load area of the cutting edge; FIG. 5 is a perspective view showing another embodiment of the chip;
6 to 9 are front views showing still other embodiments of the chip. DESCRIPTION OF SYMBOLS 1...Shank part, 2... Cylindrical part, 3... Chip discharge groove, 4... Main body, 5.6... Cutting blade tip, 5a,
5a... Cutting blade, 7.8... Position adjustment screw, 9.
10... Holder, 11... Bolt, 12... Detent key.

Claims

[Scope of utility model registration request]

(1) A single trepan-type tool has a cylindrical tool body with two cutting blades for the inner circumference and the outer circumference of the annular groove to be cut, each offset in the radial direction, at the tip of the tool body. In this case, the radial rake angles of both cutting edges are both negative angles,
A trepan-type cutting tool characterized in that both axial rake angles are square.

(2) Set the radial rake angle of the cutting edge responsible for cutting the inner circumference from 0 to
-10°, while that of the cutting edge responsible for cutting the outer periphery is 0 to -15°.
The trepan type cutting tool according to claim (1) of the utility model registration, characterized in that the cutting tool is set in the range of .

(3) Practical use characterized in that an outer cutting edge angle and an inner cutting edge angle are attached to the above-mentioned both cutting edges, and the cutting area of each inner cutting edge portion and outer cutting edge portion is approximately divided into two in the radial direction. A trepan type cutting tool according to claim 1 or 2 of the patent registration claim.

(4) The utility model according to any one of claims (1) to (3), characterized in that both cutting edges have a convex or concave shape with respect to the rotational direction of the tool. Trap pan type cutting tool.