JPS62184904U

JPS62184904U -

Info

Publication number: JPS62184904U
Application number: JP7241186U
Authority: JP
Priority date: 1986-05-12
Filing date: 1986-05-12
Publication date: 1987-11-25

Description

[Brief explanation of the drawing]

第１図はこの考案の第１実施例を示す平面図、
第２図は第１図の―線に沿つた断面図、第３
図は第１図の―線に沿つた断面図、第４図は
第２実施例の要部を示す平面図、第５図は従来例
を示す平面図、第６図は第５図の―線に沿つ
た断面図である。１……チツプ、２……すくい面、３……陸部、
４……切刃、５……傾斜面、６……ランド部、７
……凹所、８……交差稜、９……コーナー部切刃
。 FIG. 1 is a plan view showing the first embodiment of this invention;
Figure 2 is a sectional view taken along the - line in Figure 1;
The figure is a sectional view taken along the line - in Fig. 1, Fig. 4 is a plan view showing the main parts of the second embodiment, Fig. 5 is a plan view showing the conventional example, and Fig. 6 is a sectional view taken along the - line in Fig. 5. It is a sectional view along a line. 1... Chip, 2... Rake face, 3... Land section,
4... Cutting edge, 5... Inclined surface, 6... Land portion, 7
...Recess, 8...Cross ridge, 9...Corner cutting edge.

Claims

[Scope of utility model registration request]

At the center of the rake face, there is a land part that protrudes in the direction where the chip thickness becomes thicker than the cutting edge, and the land part rises from a predetermined distance from the cutting edge on the rake face. In a negative or positive type polygonal throw-away chip surrounded by an inclined surface that intersects with the upper surface at an obtuse angle, a land portion of a very small width is placed on the rake face near the corner portion with a land portion between it and the cutting edge of the corner portion. 1. A throw-away chip characterized in that a spherical recess is provided, and one end of the intersecting edge of the inclined surfaces extends almost to the center of the recess.