JPH0393013U

JPH0393013U -

Info

Publication number: JPH0393013U
Application number: JP92790U
Authority: JP
Priority date: 1990-01-11
Filing date: 1990-01-11
Publication date: 1991-09-24

Description

[Brief explanation of drawings]

第１乃至９図はこの考案の実施例の態様図であ
り、第１図は１実施例のボールエンドミルの側面
図、第２図は同先部分拡大側面図、第３図は同正
面視図、第４図は切刃素材の正面図、第５図は同
側面図、第６図は切刃に切り出された実施例の第
４図相当正面図、第７図は同底面図、第８図は更
に別の切刃に切り出された実施例の正面図、第９
図は従来技術に基づくボールエンドミルの側面図
、第１０図は同部分拡大側面図、第１１図は同正
面視図である。５′……硬質焼結体、３′……切刃、１′……
ボールエンドミル、２……シヤンク。 Figures 1 to 9 are diagrams of embodiments of this invention, in which Figure 1 is a side view of a ball end mill according to one embodiment, Figure 2 is an enlarged side view of a portion of the ball end mill, and Figure 3 is a front view of the same. , Fig. 4 is a front view of the cutting blade material, Fig. 5 is a side view of the same, Fig. 6 is a front view corresponding to Fig. 4 of an example cut out into a cutting blade, Fig. 7 is a bottom view of the same, and Fig. 8 The figure is a front view of the embodiment cut into another cutting edge, No. 9
The figures are a side view of a ball end mill based on the prior art, FIG. 10 is an enlarged side view of the same part, and FIG. 11 is a front view of the same. 5'...Hard sintered body, 3'...Cutting blade, 1'...
Ball end mill, 2...shank.

Claims

[Scope of claim for utility model registration] (1) In a ball end mill structure in which the cutting edge is formed of a hard sintered body mainly composed of CBN or diamond, the cutting edge is concentrically arranged along the radius of the tip of the shank part. A ball end mill structure characterized by being made of only sintered bodies with layers of the same thickness. (2) The ball end mill structure according to claim 1, wherein the cutting blade is formed of a pair of semicircular hard sintered bodies. (3) The ball end mill structure according to claim 1, wherein the cutting edge is formed of a partially circular hard sintered body.