JPH0187819U

JPH0187819U -

Info

Publication number: JPH0187819U
Application number: JP1987182165U
Authority: JP
Priority date: 1987-11-30
Filing date: 1987-11-30
Publication date: 1989-06-09
Anticipated expiration: 2002-11-30
Also published as: JPH0742567Y2

Description

[Brief explanation of the drawing]

第１図〜第６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図はチツプの取付
状態を示す斜視図、第２図はチツプ取付部の側断
面図、第３図〜第６図は装着しているチツプの形
状を示すもので、第３図は正面図、第４図は第３
図の―線視図、第５図は第３図の―線視
図、第６図は第３図の―線断面図、第７図〜
第１２図は従来のボールエンドミルを示すもので
、第７図は正面図、第８図は先端部の側面図、第
９図は第７図の―線視図、第１０図は装着し
ているチツプの正面図、第１１図は第１０図の
―線視図、第１２図は第１０図の―
線断面図である。１……エンドミル本体、３……チツプ取付座、
４，５……チツプ（スローアウイエチツプ）、６
……上面（すくい面）、７……下面（着座面）、
８……切刃、１３……側面、２０……凹部、２１
……係止部材、２１ａ……突出部分、２２……凹
部。 Figures 1 to 6 show an embodiment of the ball end mill of this invention. Figure 1 is a perspective view showing how the tip is attached, Figure 2 is a side sectional view of the tip attachment part, and Figure 3 is a side sectional view of the tip attachment part. - Figure 6 shows the shape of the chip installed, Figure 3 is the front view, Figure 4 is the 3rd
Fig. 5 is a perspective view of Fig. 3, Fig. 6 is a sectional view of Fig. 3, Fig. 7-
Fig. 12 shows a conventional ball end mill, Fig. 7 is a front view, Fig. 8 is a side view of the tip, Fig. 9 is a perspective view of Fig. 7, and Fig. 10 is an installed one. Fig. 11 is a front view of the chip shown in Fig. 10, and Fig. 12 is a perspective view of Fig. 10.
FIG. 1... End mill body, 3... Chip mounting seat,
4, 5...chip (slower chip), 6
...Top surface (rake surface), 7...Bottom surface (seating surface),
8...Cutting blade, 13...Side surface, 20...Recess, 21
... Locking member, 21a ... Projection portion, 22 ... Recessed portion.

Claims

[Scope of utility model registration request]

A throw-away tip, which has at least two arc-shaped cutting edges formed on the ridgeline of the upper surface that becomes the rake surface, is attached to the tip mounting seat formed on the outer periphery of the tip of the end mill body. In the ball end mill, which is positioned from the outer peripheral side to the tip side of the end mill body, and is mounted with the lower surface serving as the seating surface and the side surface along the other arc-shaped cutting edge in contact with the tip mounting seat, as described above, A recess is formed in the tip mounting seat that the seating surface of the tip comes into contact with, and a locking member is fitted into the recess with its upper part protruding from the recess, and the locking member is fitted onto the seating surface of the throwaway tip. A ball end mill characterized in that a recessed portion is formed to engage with a protruding portion of a member.