JPS63113502U

JPS63113502U -

Info

Publication number: JPS63113502U
Application number: JP504787U
Authority: JP
Priority date: 1987-01-16
Filing date: 1987-01-16
Publication date: 1988-07-21

Description

[Brief explanation of the drawing]

第１図は、この考案に係るスローアウエイチツ
プの一例を使用状態にして示す平面図、第２図は
その―線に、第３図は―線に、第４図は
―線に沿つた拡大断面図、第５図はチツプの
コーナ部を詳細に表わした拡大斜視図、第６図は
切屑の排出状態を示す拡大斜視図、第７図、第８
図、第９図はいずれも従来のネジ切りチツプで、
いずれもイは平面を、ロは各々のイ図の―線
に沿つた拡大断面を表わす図である。１０……スローアウエイチツプ、１１……すく
い面、１２……切刃、１３……凹部、１３ａ，１
３ｂ……楕円球の一部から成る面、１３ｂ……最
深部、１４……ブレーカ壁、１４ａ，１４ｃ……
急傾斜部、１４ｂ……緩傾斜部、Ｆ……切屑の流
出方向。 Fig. 1 is a plan view showing an example of the throw-away tip according to this invention in a used state, Fig. 2 is an enlarged view along the - line, Fig. 3 is an enlarged view along the - line, and Fig. 4 is an enlarged view along the - line. 5 is an enlarged perspective view showing the corner portion of the chip in detail; FIG. 6 is an enlarged perspective view showing the chip discharge state; FIGS. 7 and 8 are
Both Fig. 9 and Fig. 9 are conventional thread cutting tips.
In each figure, A shows a plane, and B shows an enlarged cross section along the line - of each A figure. 10... Throwaway tip, 11... Rake face, 12... Cutting edge, 13... Recess, 13a, 1
3b... Surface consisting of part of an elliptical sphere, 13b... Deepest part, 14... Breaker wall, 14a, 14c...
Steep slope part, 14b... gentle slope part, F... direction of outflow of chips.

Claims

[Scope of utility model registration request]

A throw-away tip for thread cutting is equipped with two cutting edges diagonally intersecting in accordance with the thread shape at the corner, and is constructed by combining a plurality of partial surfaces of elliptical spheres on the rake face near the cutting edges. 1. A throw-away tip for thread cutting, characterized in that a recess is provided, and a breaker wall formed of a part of an elliptical sphere is provided behind the recess.