Cutting tool, manufacturing method for cutting tool, and method for manufacturing cut product using cutting tool
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United States of America Patent
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Aug 21, 2018
Grant Date -
Jun 16, 2016
app pub date -
Jul 16, 2014
filing date -
Jul 22, 2013
priority date (Note) -
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Abstract
A cutting tool based on an embodiment of the present invention is provided with a cylindrical main body section which is made of a cobalt-containing cemented carbide alloy and is rotatable about the central axis thereof, a cutting edge which is provided at at least one of the tip and the periphery of the main body section, a chip discharge groove which extends from the cutting edge toward the rear end of the main body section, and a coating layer which is made of diamond and covers the cutting edge, wherein the cobalt content of the surface of the main body section at the part coated with the coating layer is less than the cobalt content of the surface of the main body section at parts other than the part coated with the coating layer.
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