JPH0184914U

JPH0184914U -

Info

Publication number: JPH0184914U
Application number: JP1987179343U
Authority: JP
Priority date: 1987-11-25
Filing date: 1987-11-25
Publication date: 1989-06-06
Anticipated expiration: 2002-11-25
Also published as: JPH0744409Y2

Description

[Brief explanation of the drawing]

第１図〜第１１図はこの考案のボールエンドミ
ルの一実施例を示すもので、第１図は正面図、第
２図は側面図、第３図は底面図、第４図は第１図
の“Ａ”部拡大図、第５図は第３図の“Ｂ”部拡
大図、第６図は装着されているチツプを示す正面
図、第７図は第６図の−線視側面図、第８図
は第６図の−線視図、第９図は第６図の−
線視断面図、第１０図はチツプの装着状態を示
す斜視図、第１１図はチツプ装着部の断面図、第
１２図〜第１４図は従来のボールエンドミルを示
すもので、第１２図は正面図、第１３図は先端部
の側断面図、第１４図は底面図である。１０……エンドミル本体、２０……チップ（ス
ローアウエイチツプ）、２１……上面（すくい面
）、２２……下面（着座面）、２３，２４……側
面、２６……切刃、２７……小切刃、２８……凸
曲面。 Figures 1 to 11 show an embodiment of the ball end mill of this invention, with Figure 1 being a front view, Figure 2 being a side view, Figure 3 being a bottom view, and Figure 4 being the same as Figure 1. 5 is an enlarged view of the "B" part of FIG. 3, FIG. 6 is a front view showing the installed chip, and FIG. 7 is a side view of FIG. , FIG. 8 is a - line view of FIG. 6, and FIG. 9 is a - line view of FIG. 6.
10 is a perspective view showing the state in which the tip is attached, FIG. 11 is a sectional view of the tip attachment part, FIGS. 12 to 14 show a conventional ball end mill, and FIG. FIG. 13 is a front view, FIG. 13 is a side sectional view of the tip, and FIG. 14 is a bottom view. 10... End mill body, 20... Tip (throwaway tip), 21... Top surface (rake surface), 22... Bottom surface (seating surface), 23, 24... Side surface, 26... Cutting blade, 27... Small cutting blade, 28...Convex curved surface.

Claims

[Scope of utility model registration request]

In a ball end mill in which a throw-away tip is attached to the outer periphery of the tip of the end mill body with its arc-shaped cutting edge positioned from the outer periphery of the end mill body to the tip side, the throw-away tip has the arc-shaped The tip of the cutting edge is formed with a small cutting edge that intersects with the small cutting edge at an obtuse angle, and the entire rake face along the small cutting edge and the tip of the cutting edge extends from the center side of this indexable tip to the small cutting edge side. The tip of the cutting edge is located near the axis of the end mill body, and the small cutting edge is made to cross the axis of the end mill body. A ball end mill characterized in that the ball end mill is mounted so as to be retracted toward the proximal end of the ball end mill.