Cutting insert, cutting tool, and method for manufacturing machined product
AssigneeKYOCERA Corporation
InventorYousuke FUKUHARA
Life of this patent
Estimating the term…
Abstract
A cutting insert according to an aspect includes a base portion and a cutting portion. The cutting portion includes an upper surface, a side surface, a ridge line including a first ridge line and a second ridge line, and an intersection point. The upper surface includes a top surface region and a rising surface region located between the top surface and the ridge line, and having a shape protruding toward the intersection point. In a top view, a first distance from the first ridge line to the rising surface increases as close to the intersection point, and a second distance from the second ridge line to the rising surface increases as close to the intersection point.
Claims11
A cutting insert extending from a first end toward a second end, and comprising:
- a base portion;
- and
- a cutting portion projecting from the base portion toward the first end, wherein
- the cutting portion comprises:
- an upper surface extending from the base portion toward the first end;
- a side surface connected to the upper surface and comprising:
- a first side surface positioned on a side of the first end;
- and
- a second side surface adjacent to the first side surface;
- a ridge line positioned at an intersection of the upper surface and the side surface, and comprising:
- a first ridge line positioned at an intersection of the upper surface and the first side surface;
- and
- a second ridge line positioned at an intersection of the upper surface and the second side surface;
- a first cutting edge positioned at the first ridge line;
- and
- a second cutting edge positioned at the second ridge line;
- and
- an intersection point positioned at an intersection of the first ridge line and the second ridge line,
- the upper surface comprises:
- a top surface region;
- and
- a rising surface region located between the top surface and the ridge line, inclined toward the top surface region as proceeding away from the ridge line and having a shape protruding toward the intersection point,
- a first distance from the first ridge line to the rising surface increases as close to the intersection point in a top view, and
- a second distance from the second ridge line to the rising surface increases as closer to the intersection point in the top view.
Dependencies are inferred from the claim text.