JPS62188319U

JPS62188319U -

Info

Publication number: JPS62188319U
Application number: JP7642986U
Authority: JP
Priority date: 1986-05-21
Filing date: 1986-05-21
Publication date: 1987-11-30

Description

[Brief explanation of the drawing]

第１図は本考案にかかるボールエンドミルの第
１実施例を概略的に示す正面図、第２図は第１図
のＡ方向に沿つた矢視図、第３図はチツプの概略
構成を示す正面図、第４図は同じくその側面図、
第５図は本考案の第２実施例にかかるチツプの概
略構成を示す側面図、第６図は従来のボールエン
ドミルの構造を概略的に示す正面図、第７図は第
６図のＢ方向に沿つた矢視図、第８図は従来のチ
ツプの概略構成を示す正面図、第９図は同じくそ
の側面図である。１……ボールエンドミル、２……ホルダ本体、
４……チツプ、６，７……凹溝、４２……弧状切
刃、４５……すくい面。 FIG. 1 is a front view schematically showing a first embodiment of the ball end mill according to the present invention, FIG. 2 is a view taken along the direction A in FIG. 1, and FIG. 3 is a schematic diagram of the structure of the tip. The front view, Figure 4 is the side view,
Fig. 5 is a side view schematically showing the structure of a chip according to a second embodiment of the present invention, Fig. 6 is a front view schematically showing the structure of a conventional ball end mill, and Fig. 7 is a direction B in Fig. 6. FIG. 8 is a front view showing a schematic structure of a conventional chip, and FIG. 9 is a side view thereof. 1...Ball end mill, 2...Holder body,
4... Chip, 6, 7... Concave groove, 42... Arc cutting edge, 45... Rake face.

Claims

[Scope of utility model registration request]

In the ball end mill, a plurality of chips having three arcuate cutting edges and having a flank surrounded by the cutting edges as a relief surface are attached to the hemispherical tip of the holder body, arranged in a radial direction of the holder body. A ball end mill characterized by a concave groove formed on the rake face along the arcuate cutting edge of the chip.