Cutting tool and method for manufacturing cut product using same
AssigneeKYOCERA Corporation
InventorsMasahiro Waki, Mari Imazato, Tan Ka
Life of this patent
Estimating the term…
Abstract
A cutting tool such as a drill (1) in which a coating layer (6) is provided to the surface of a base body (5) having a rod shape, which is equipped with a cutting edge (2) provided to at least the tip portion (A) of the base body (5) having a rod shape and a chip discharge section (4) provided adjacent to the cutting edge (2) so as to extend rearwards (i.e., towards the rear end) from the tip portion (A), the coating layer (6) comprising a mixture phase of diamond and graphite and having a diamond content ratio which is lower in a rear end located 10 mm rearward from the tip than in the tip portion (A).
Claims5
A cutting tool with a rod shape and cutting edge, comprising:
- a base body elongated in a direction with the cutting edge at an end, having a central rotation axis along the direction, rotatable along the central rotation axis, and comprising a tip portion at the cutting edge, the tip portion comprising:
- a center portion including the central rotation axis in a tip side view;
- and
- a peripheral portion outside of the center portion, including an outermost part of the tip portion in the tip side view;
- and
- a coating layer disposed on the base body at the tip portion, and containing diamond,
- wherein a first ratio is less than a second ratio, where the first ratio is a ratio of an SP3 peak intensity of a surface of the coating layer at the center portion to a total of SP2 and SP3 peak intensities in a Raman spectroscopy analysis, and the second ratio is a ratio of the SP3 peak intensity of the surface at the peripheral portion to the total.
Dependencies are inferred from the claim text.