JPS5844135U

JPS5844135U - Gun reamer

Info

Publication number: JPS5844135U
Application number: JP13881781U
Authority: JP
Inventors: 大川　正利
Original assignee: 東芝タンガロイ株式会社
Priority date: 1981-09-18
Filing date: 1981-09-18
Publication date: 1983-03-24

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 the drawing]

第１図は、本考案ガンリーマの一実施例を示す正面図、
第２図は、その側面図、第３図は、第１図中の■−■線
に沿って得られる部分的な拡大断面図、第４図および第
５図は、それぞれ第３図に相当する変形例を示す部分的
な拡大断面図である。１・・・本体、２・・・切刃チップ、９・・・すくい面
、１０・・・外周切刃稜、１１・・・チップブレーカ−
１１２・・・ランド。FIG. 1 is a front view showing an embodiment of the gun reamer of the present invention;
Figure 2 is a side view, Figure 3 is a partially enlarged sectional view taken along the line ■-■ in Figure 1, and Figures 4 and 5 correspond to Figure 3. FIG. 7 is a partially enlarged cross-sectional view showing a modification example. DESCRIPTION OF SYMBOLS 1... Main body, 2... Cutting edge tip, 9... Rake face, 10... Outer circumference cutting edge ridge, 11... Chip breaker
112...Rand.

Claims

[Claims for Utility Model Registration] A gun reamer in which a cutting tip 2 having a flute groove 4 is provided at the tip of a pipe-shaped main body 1, and a shank 3 is attached to the rear end thereof, The rake face 9 of the cutting edge tip 2 has a cutting edge 1 on its outer periphery.
A chip breaker 11 having a concave shape is provided along 0, and between its depth t and width W, tIw=0.1 to 0.5.
A gun reamer that forcibly curls chips generated during cutting so that the following relationship holds true.