JPH01170511U

JPH01170511U -

Info

Publication number: JPH01170511U
Application number: JP6570288U
Authority: JP
Priority date: 1988-05-18
Filing date: 1988-05-18
Publication date: 1989-12-01
Anticipated expiration: 2003-05-18
Also published as: JPH0613773Y2

Description

[Brief explanation of the drawing]

第１図ないし第１０図は本考案の一実施例を示
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、第２のスローアウ
エイチツプの回転軌跡を説明する説明図、第５図
と第６図は第１のスローアウエイチツプを示すも
ので、第５図は正面図、第６図は側面図、第７図
と第８図は第２のスローアウエイチツプを示すも
ので、第７図は正面図、第８図は側面図、第９図
と第１０図はチツプに振れが生じた場合について
示すもので、第９図は第１、第２のスローアウエ
イチツプの回転軌跡のずれを説明する説明図、第
１０図は被削材の仕上面の断面図、第１１図ない
し第１７図は従来のボールエンドミルを示すもの
で、第１１図は正面図、第１２図と第１３図は主
チツプを示すもので、第１２図は正面図、第１３
図は側面図、第１４図と第１５図は補助チツプを
示すもので、第１４図は正面図、第１５図は側面
図、第１６図と第１７図はチツプに振れが生じた
場合について示すもので、第１６図は主チツプと
補助チツプの回転軌跡のずれを説明する説明図、
第１７図は被削材の仕上面の断面図である。１０……エンドミル本体、１３……第１のスロ
ーアウエイチツプ、１４……第２のスローアウエ
イチツプ、１７……切刃、１８……小切刃、２２
……切刃、２３……小切刃、ｌ……軸線。 Figures 1 to 10 show one embodiment of the present invention, where Figure 1 is a front view, Figure 2 is a side view, Figure 3 is a bottom view, and Figure 4 is a first and second embodiment. Figures 5 and 6 are explanatory diagrams for explaining the rotation locus of the throw-away chip. Figures 5 and 6 show the first throw-away chip, with Figure 5 being a front view, Figure 6 being a side view, and Figures 7 and 6 showing Figure 8 shows the second throw-away tip, Figure 7 is a front view, Figure 8 is a side view, Figures 9 and 10 show the case where the tip is shaken. The figure is an explanatory diagram illustrating the deviation in the rotation loci of the first and second throw-away tips, Figure 10 is a sectional view of the finished surface of the workpiece, and Figures 11 to 17 show a conventional ball end mill. Figure 11 is a front view, Figures 12 and 13 are the main chips, Figure 12 is a front view, and Figure 13 is a front view.
The figure is a side view, Figures 14 and 15 show the auxiliary tip, Figure 14 is a front view, Figure 15 is a side view, and Figures 16 and 17 are for when the tip shakes. FIG. 16 is an explanatory diagram illustrating the deviation of the rotation loci of the main chip and the auxiliary chip;
FIG. 17 is a sectional view of the finished surface of the workpiece. DESCRIPTION OF SYMBOLS 10... End mill body, 13... First throw-away tip, 14... Second throw-away tip, 17... Cutting blade, 18... Small cutting blade, 22
...Cutting blade, 23...Small cutting blade, l...Axis line.

Claims

[Scope of utility model registration request]

Two throw-away tips are attached to the outer periphery of the tip of the end mill body with their respective arc-shaped cutting blades positioned from the outer periphery of the end mill body to the tip side, and the first throw-away tip of these throw-away tips The tip has its cutting edge located near the axis of the end mill body, and the second
The throw-away tip is a ball end mill that is installed with the tip of its cutting blade spaced apart from the axis to the outer periphery, and the rotation locus of the second throw-away tip makes an angle of 45 degrees with the axis of the end mill body. coincides with the rotation locus of the first throw-away tip only in the vicinity of the angle formed, and is included within the rotation locus of the first throw-away tip on the distal and proximal sides thereof. , a ball end mill characterized in that each of the above-mentioned throw-away tips is arranged on the above-mentioned end mill body.