Title:
ENDMILL
Document Type and Number:
WIPO Patent Application WO/2011/122457
Kind Code:
A1
Abstract:
Provided is an endmill which can suppress the generation of burring for various types of cutting states and various workpiece thicknesses, and in addition can perform smooth cutting without any problems in terms of the discharge of chips or the characteristics of finished surfaces. A first outer peripheral blade (4A) formed in a helical shape twisting about an axis (O) and a second outer peripheral blade (4B) formed in a straight line extending parallel to the axis (O) are provided in a cutting blade section (3) of an endmill main body (1) which is rotated about the axis (O). Furthermore, the first outer peripheral blade (4A) is formed in a helical shape twisting from the rear end side toward the tip end side in the endmill rotation direction (T).
Inventors:
AZEGAMI Takayuki (179-1 Nishioike, Kanagasaki, Uozumicho, Akashi-sh, Hyogo 71, 〒6740071, JP)
Application Number:
JP2011/057280
Publication Date:
October 06, 2011
Filing Date:
March 25, 2011
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORPORATION (3-2 Otemachi 1-chome, Chiyoda-ku Tokyo, 17, 〒1008117, JP)
三菱マテリアル株式会社 (〒17 東京都千代田区大手町一丁目３番２号 Tokyo, 〒1008117, JP)
三菱マテリアル株式会社 (〒17 東京都千代田区大手町一丁目３番２号 Tokyo, 〒1008117, JP)
International Classes:
B23C5/10
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