JPH0362708U

JPH0362708U -

Info

Publication number: JPH0362708U
Application number: JP12381089U
Authority: JP
Priority date: 1989-10-23
Filing date: 1989-10-23
Publication date: 1991-06-19
Anticipated expiration: 2004-10-23
Also published as: JP2554861Y2

Description

[Brief explanation of the drawing]

第１図は、本考案スローアウエイチツプの一実
施例を示す正面図、第２図は、一部拡大正面図、
第３図は、第２図の一部側面図、第４図〜第６図
は、それぞれ第２図中の−線、−線およ
び−線に沿つて得られる断面図、第７図ａ，
ｂは、それぞれ切削状態を概念的に示す説明図、
第８図は、本考案スローアウエイチツプによつて
切りくず処理範囲を得たｄ−ｆ線図である。１……スローアウエイチツプ、２……第１のチ
ツプブレーカ溝、３……第２のチツプブレーカ溝
、４……中央ボス面、５……堤防部分、６……切
刃稜、７……第１のブレーカ突起、８……第２の
ブレーカ突起。 FIG. 1 is a front view showing an embodiment of the throw-away tip of the present invention, FIG. 2 is a partially enlarged front view,
FIG. 3 is a partial side view of FIG. 2, FIGS. 4 to 6 are cross-sectional views taken along lines -, -, and - in FIG. 2, respectively, and FIGS.
b is an explanatory diagram conceptually showing the cutting state, respectively;
FIG. 8 is a d-f diagram showing the chip processing range obtained by the throw-away tip of the present invention. DESCRIPTION OF SYMBOLS 1...Throwaway tip, 2...First chip breaker groove, 3...Second chip breaker groove, 4...Central boss surface, 5...Dike portion, 6...Cutting edge ridge, 7... First breaker protrusion, 8... second breaker protrusion.

Claims

[Claims for Utility Model Registration] It has a polygonal surface, and the polygonal surface has a first chip breaker groove 2, a second chip breaker groove 3, and a central boss surface in the direction of the bisector of the corner radius portion. In the indexable chip, a dike portion 5 is formed projecting from the dyke portion 4, and a cutting edge 6 is formed on the outer edge of the dike portion 5, and the first chip breaker groove 2 is cut at a corner radius portion. A first breaker protrusion 7 is recessed in a position close to the cutting edge 6 and is lower than the cutting edge 6 at the upward cutting portion thereof, and the second chip breaker groove 3 is formed at a corner. It is formed over the radius part and the side part, and is recessed in the corner radius part from the part where the first chip breaker groove 2 cuts up to between the protruding ends of the embankment part 5, and in the side part. , the embankment part 5 is recessed so as to become narrow at a certain starting end, the embankment part 5 has a second breaker protrusion 8 formed at its convex end, and the cutting edge 6 is a throw-away chip characterized by having a center drop amount δ with respect to the central boss surface 4.