Title:
DRILL WITH COOLANT HOLES
Document Type and Number:
WIPO Patent Application WO/2010/146839
Kind Code:
A1
Abstract:
A drill provided with coolant holes, comprising: a drill body rotating about the axis thereof; cutting edge sections having top clearance surfaces; cutting debris discharge grooves each having a front groove-wall surface facing forward in the rotational direction of the drill body and also each having a rear groove-wall surface facing rearward in the rotational direction; cutting edges each formed at the ridge at which a front groove-wall surface and a top clearance surface intersect each other; land sections each formed between the cutting debris discharge grooves adjacent to each other in the rotational direction; and coolant holes formed by boring in the land sections and open in the top clearance surfaces. The coolant holes each include: a front hole-wall surface located ahead in the rotational direction and having a constant distance to the front groove-wall surface of a cutting debris discharge groove; a rear hole-wall surface located behind the rotational direction and having a constant distance to the rear groove-wall surface of a cutting debris discharge groove; and an outer peripheral hole-wall surface located on the outer peripheral side of the drill body and having a constant distance to the outer peripheral wall surface of a land section.
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Inventors:
MATSUDA, Nobuyuki (Gifu Plant 1528, Aza Nakashinden, Oaza Yokoi, Goudo-cho, Anpachi-gu, Gifu 01, 〒5032301, JP)
松田信行 (〒01 岐阜県安八郡神戸町大字横井字中新田１５２８番地 三菱マテリアル株式会社 岐阜製作所内 Gifu, 〒5032301, JP)
HIGASHI, Hiroyuki (Gifu Plant 1528, Aza Nakashinden, Oaza Yokoi, Goudo-cho, Anpachi-gu, Gifu 01, 〒5032301, JP)
東裕之 (〒01 岐阜県安八郡神戸町大字横井字中新田１５２８番地 三菱マテリアル株式会社 岐阜製作所内 Gifu, 〒5032301, JP)
NARUKE, Koichiro (Gifu Plant 1528, Aza Nakashinden, Oaza Yokoi, Goudo-cho, Anpachi-gu, Gifu 01, 〒5032301, JP)
松田信行 (〒01 岐阜県安八郡神戸町大字横井字中新田１５２８番地 三菱マテリアル株式会社 岐阜製作所内 Gifu, 〒5032301, JP)
HIGASHI, Hiroyuki (Gifu Plant 1528, Aza Nakashinden, Oaza Yokoi, Goudo-cho, Anpachi-gu, Gifu 01, 〒5032301, JP)
東裕之 (〒01 岐阜県安八郡神戸町大字横井字中新田１５２８番地 三菱マテリアル株式会社 岐阜製作所内 Gifu, 〒5032301, JP)
NARUKE, Koichiro (Gifu Plant 1528, Aza Nakashinden, Oaza Yokoi, Goudo-cho, Anpachi-gu, Gifu 01, 〒5032301, JP)
Application Number:
JP2010/003976
Publication Date:
December 23, 2010
Filing Date:
June 15, 2010
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)
MATSUDA, Nobuyuki (Gifu Plant 1528, Aza Nakashinden, Oaza Yokoi, Goudo-cho, Anpachi-gu, Gifu 01, 〒5032301, JP)
松田信行 (〒01 岐阜県安八郡神戸町大字横井字中新田１５２８番地 三菱マテリアル株式会社 岐阜製作所内 Gifu, 〒5032301, JP)
HIGASHI, Hiroyuki (Gifu Plant 1528, Aza Nakashinden, Oaza Yokoi, Goudo-cho, Anpachi-gu, Gifu 01, 〒5032301, JP)
東裕之 (〒01 岐阜県安八郡神戸町大字横井字中新田１５２８番地 三菱マテリアル株式会社 岐阜製作所内 Gifu, 〒5032301, 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)
MATSUDA, Nobuyuki (Gifu Plant 1528, Aza Nakashinden, Oaza Yokoi, Goudo-cho, Anpachi-gu, Gifu 01, 〒5032301, JP)
松田信行 (〒01 岐阜県安八郡神戸町大字横井字中新田１５２８番地 三菱マテリアル株式会社 岐阜製作所内 Gifu, 〒5032301, JP)
HIGASHI, Hiroyuki (Gifu Plant 1528, Aza Nakashinden, Oaza Yokoi, Goudo-cho, Anpachi-gu, Gifu 01, 〒5032301, JP)
東裕之 (〒01 岐阜県安八郡神戸町大字横井字中新田１５２８番地 三菱マテリアル株式会社 岐阜製作所内 Gifu, 〒5032301, JP)
International Classes:
B23B51/06; B23B51/00
Attorney, Agent or Firm:
SHIGA, Masatake et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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