Cutting insert, cutting tool, and method of manufacturing machined product
AssigneeKYOCERA Corporation
InventorYoshihito Ikeda
Life of this patent
Estimating the term…
Abstract
A cutting insert based on a non-limiting aspect has a first member and a second member joined to the first member. The second member has an upper surface and a side surface adjacent to the upper surface. The upper surface includes a first side, a second side and a corner. The upper surface has a first convex portion extending toward the corner, and a second convex portion extending from the first convex portion toward the first side. The second convex portion has a first end portion and a second end portion located closer to the corner than the first end portion. A first length from the first end to the first side is less than a second length from the second end portion to the first side in a top view.
Claims18
A cutting insert comprising:
- a first member;
- and
- a second member joined to the first member, wherein
- the second member comprising
- an upper surface including a first side, a second side, and a corner positioned between the first side and the second side, and
- a side surface adjacent to the upper surface,
- the upper surface comprising
- a first convex portion extending toward the corner, and
- a second convex portion extending from the first convex portion toward the first side,
- the first convex portion comprises:
- a first portion facing to the corner;
- a second portion facing to the first side;
- and
- a third portion positioned between the first portion and the second portion,
- the second convex portion comprising
- a first end portion, and
- a second end portion located closer to the corner than the first end portion,
- a first length from the first end portion to the first side is less than a second length from the second end portion to the first side in a top view,
- a first straight line is an imaginary straight line that passes through a center point of the corner and is orthogonal to a bisecting line of the corner, and
- a third length from the first straight line to the third portion is less than a fourth length from the first straight line to the second end portion in the top view.
A cutting insert comprising:
- a first member;
- and
- a second member joined to the first member, wherein
- the second member comprising
- an upper surface including a first side, a second side, and a corner positioned between the first side and the second side, and
- a side surface adjacent to the upper surface,
- the upper surface comprising
- a first convex portion extending toward the corner, and
- a second convex portion extending from the first convex portion toward the first side,
- the second convex portion comprising
- a first end portion, and
- a second end portion located closer to the corner than the first end portion,
- a first length from the first end portion to the first side is less than a second length from the second end portion to the first side in a top view,
- the second member further comprises a lower surface positioned opposite to the upper surface,
- the first convex portion comprises an end surface having a flat surface and positioned furthest from the lower surface
- the upper surface further comprises:
- an edge located along the first side, the second side and the corner and
- a second inclined surface positioned between the end surface and the edge and inclined with respect to the end surface, and
- the second inclined surface comprises grooves each extending in a direction inclined with respect to the first side in the top view.
Dependencies are inferred from the claim text.