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US 6,231,274 B1Granted
End mill
AssigneeToshiba Kikai Kabushiki Kaisha
InventorsMasayoshi Yoneyama, Husao Sakai, Michio Mori
Life of this patent
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Abstract
An end mill comprises an arbor, a tool body attached to an end of the arbor, and throw-away chips detachably attached to an end face of the tool body. Each throw-away chip has a cutting edge having a peripheral circular cutting edge section for shaping, and an end straight cutting edge section for end milling.
Claims9
An end mill for slot milling comprising:
- an arbor having a cylindrical body with a front end part and a rear end part, a tapered shank attached to the rear end part thereof;
- a tool body having a front end face, said tool body being attached to the front end part of the arbor;
- and
- a plurality of throw-away tips detachably attached by fasteners in the front end face of the tool body;
- wherein each of the throw-away tips has a cutting part having a partly circular cutting edge section serving as a peripheral cutting edge, wherein all of the partly circular cutting edge section extending beyond a peripheral face of the tool body is curved, and a straight cutting edge section serving as an end cutting edge, the circular cutting edge section continuous with the straight cutting edge section.
2 more elements
Dependencies are inferred from the claim text.