Gear cutting method and apparatus

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United States of America Patent

PATENT NO 6116828
SERIAL NO

09058363

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Abstract

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Gear cutting is to be effected in high efficiency and at low cost. To this end, using a hob 16 coated with at least one layer of a film of a composition comprising: (Ti.sub.(1-x) Al.sub.x)(N.sub.y C.sub.(1-y)) 0.2.ltoreq.x.ltoreq.0.85 0.25.ltoreq.y.ltoreq.1.0, dry cutting is performed at a cutting speed in the range of 80 to 400 m/min without using a cutting oil. Teeth can be generated at a greatly improved cutting speed without using any expensive tool such as a tool made of cemented carbide.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI HEAVY INDUSTRIES MACHINE TOOL CO LTD130 ROKUJIZO RITTO-SHI SHIGA 520-3080

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Egawa, Tsuneo Kyoto, JP 7 46
Kage, Hirofumi Kyoto, JP 1 6
Morimoto, Satoshi Kyoto, JP 28 103
Nakamura, Yozo Kyoto, JP 39 772
Nishimura, Yukihisa Kyoto, JP 1 6

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