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US 11,478,864 B2Granted
T-shaped tool and method for manufacturing T-shaped tool
AssigneeMakino Milling Machine Co., Ltd.
InventorsHiroshi Ueno, Ryoichi Miyamoto, Fukuhito Nagata
Life of this patent
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Abstract
A T-shaped tool is configured by fastening a head having cutting blades to a cylindrical shank, the shank is made of cemented carbide and has a tapered male thread formed at a tip end portion thereof, the tapered male thread becomes smaller in diameter toward the tip end, and the head is made of steel and has a tapered female thread formed therein, and the tapered female thread comes into engagement with the tapered male thread.
Claims2
A T-shaped tool in which a tool body having a cutting edge and a cylindrical shank are connected in a T-shape in a side view, wherein
- the shank is composed of cemented carbide and has a tapered external thread, the diameter of which decreases in the tip direction, formed on a tip thereof, with a maximum outer diameter of the tapered external thread being equal to an outer diameter of the shank,
- the tool body is composed of steel and has an aperture extending through the tool body at a central portion of the tool body, and a tapered internal thread, formed on the inner circumferential surface of the aperture, for engagement with the tapered external thread, and
- the shank and the tool body are connected by engaging the tapered external thread with the tapered internal thread without abutting the shank onto a proximal surface of the tool body.
Dependencies are inferred from the claim text.