JPH0184915U

JPH0184915U -

Info

Publication number: JPH0184915U
Application number: JP1987179344U
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: JPH0742566Y2

Description

[Brief explanation of the drawing]

第１図〜第５図はこの考案のボールエンドミル
の第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〜第８図この考案の第二実施例を示
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
三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図は底面図、第１２〜第１４
図は従来のボールエンドミルを示すもので、第１
２図は装着されているチツプの正面図、第１３図
は同側面図、第１４図は全体の正面図である。１１……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）、２３，２４，２５
……側面、２６……切刃、２７……小切刃、２８
……凸曲面。 Figures 1 to 5 show the first embodiment of the ball end mill of this invention. Figure 1 is a front view, Figure 2 is a side view, Figure 3 is a bottom view, and Figure 4 is a first embodiment of the ball end mill. Figure 5 is an enlarged view of part "B" in Figure 3, Figures 6 to 8 show a second embodiment of this invention, Figure 6 is a front view, Figure 7 is a side view, Figure 8 is a bottom view, Figures 9 to 11 show a third embodiment of this invention, Figure 9 is a front view, and Figure 10 is a front view.
The figure is a side view, Figure 11 is a bottom view, and Figures 12 to 14.
The figure shows a conventional ball end mill.
FIG. 2 is a front view of the installed chip, FIG. 13 is a side view of the same, and FIG. 14 is a front view of the entire chip. 11...End mill body, 20...Tip (throwaway tip), 21...Top surface (rake surface), 22...Bottom surface (seating surface), 23, 24, 25
... Side surface, 26 ... Cutting blade, 27 ... Small cutting blade, 28
...Convex curved surface.

Claims

[Scope of utility model registration request]

The tip mounting seat formed on the outer periphery of the tip of the end mill body has a generally fan-shaped plate shape in appearance, and two side surfaces adjacent to the convex side intersect with each other at an angle of 90 degrees or less and serve as a rake surface. An arcuate cutting edge is formed on the ridgeline between the upper surface and the convex side surface, and a small cutting edge is formed at the tip of the cutting edge to intersect with the small cutting edge at an obtuse angle. The entire upper surface along the tip of the cutting blade is formed by a convex surface that gradually approaches the lower surface side toward the small cutting edge side, and the arc-shaped cutting blade is connected to the end mill body. The small cutting edge located at the tip of the cutting blade is positioned so as to cross the axis and retreat toward the proximal end of the end mill main body, and the two side surfaces are A ball end mill characterized by being mounted in contact with the chip mounting seat.