JPS63113502U - - Google Patents

Description

【図面の簡単な説明】[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 (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] コーナ部にネジ山形状に対応して斜交する２切
刃を備えたネジ切り用スローアウエイチツプにお
いて、前記切刃近傍のすくい面上に、楕円球の一
部の面を複数組合せて構成される凹部を設け、さ
らに、その凹部の後方に楕円球の一部の面で構成
されるブレーカ壁を設けたことを特徴とするネジ
切り用スローアウエイチツプ。 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.