Helical broach

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United States of America Patent

PATENT NO 9902004
SERIAL NO

14651395

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The finishing part (4) of this helical broach (1) is formed by a first shell (20) and a second shell (30) which are divided in the axial direction, and is obtained by forming a first finishing blade (50), which comprises a prescribed gear tooth helix angle (α) end a first blade groove helix angle (β1), on the aforementioned first shell (20) and forming a second finishing blade (60), which comprises the aforementioned prescribed gear tooth helix angle (α) and a second blade groove helix angle (β2) which differs from the aforementioned first blade groove helix angle (β1), on the aforementioned second shell (30).

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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
Katsuki, Yasuhito Tokyo, JP 3 14

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