JPH0164321U

JPH0164321U -

Info

Publication number: JPH0164321U
Application number: JP1987158600U
Authority: JP
Priority date: 1987-10-16
Filing date: 1987-10-16
Publication date: 1989-04-25
Anticipated expiration: 2002-10-16
Also published as: JPH0737774Y2

Description

[Brief explanation of drawings]

第１図〜第５図はこの考案のチツプの第一実施
例を示すもので、第１図は正面図、第２図は第１
図の―線視図、第３図は側面図、第４図は第
１図の―線視断面図、第５図は基準線ｌ方向
視した斜視図、第６図〜第８図は上記チツプをボ
ールエンドミルに装着した例を示すもので、第６
図は正面図、第７図は側面図、第８図は底面図、
第９図〜第１１図はこの考案の第二実施例を示す
もので、第９図は正面図、第１０図は側面図、第
１１図は第９図の―線視断面図、第１２
図は第９図の―線視断面図、第１３図〜
第１５図は従来のチツプを示すもので、第１３図
は正面図、第１４図は側面図、第１５図はボール
エンドミルに装着した例を示す正面図である。１０，３１……チツプ（スローアウエイチツプ
）、１１……上面（すくい面）、１２……下面（
着座面）、１３，１４……側面、１５ａ，１５ｂ
……円弧状の切刃、１６……小切刃、１７，３１
……凸曲面、ｌ……基準線。 Figures 1 to 5 show the first embodiment of the chip of this invention, with Figure 1 being a front view and Figure 2 being a first embodiment of the chip.
Figure 3 is a side view, Figure 4 is a sectional view of Figure 1, Figure 5 is a perspective view taken in the direction of reference line l, Figures 6 to 8 are This shows an example of attaching the tip to a ball end mill.
The figure is a front view, Figure 7 is a side view, Figure 8 is a bottom view,
9 to 11 show a second embodiment of this invention, in which FIG. 9 is a front view, FIG. 10 is a side view, FIG. 11 is a sectional view taken along the - line of FIG.
The figure is a cross-sectional view of Figure 9, and Figure 13~
Fig. 15 shows a conventional tip, Fig. 13 is a front view, Fig. 14 is a side view, and Fig. 15 is a front view showing an example of the chip being attached to a ball end mill. 10, 31...Tip (throwaway tip), 11...Top surface (rake surface), 12...Bottom surface (
seating surface), 13, 14... side, 15a, 15b
...Arc-shaped cutting edge, 16...Small cutting edge, 17, 31
...Convex curved surface, l...Reference line.

Claims

[Scope of utility model registration request]

It has a generally elliptical plate shape in appearance, and has an arc-shaped cutting edge on the ridgeline portion of the upper surface serving as the rake surface, and a linear small cutting edge that intersects the end of this cutting edge at an obtuse angle. The entire rake face along the small cutting edge and the edge of the cutting blade gradually approaches the lower surface side from the center side of the throwaway tip toward the small cutting edge side,
A throw-away tip characterized in that it is formed by a convex curved surface that gradually approaches the lower surface side from between the ends of the cutting blades toward at least one of the cutting blades.