Cutting insert
AssigneeKYOCERA Corporation
InventorsKenji Uchijo, Yoshihiro Inoue
Life of this patent
Estimating the term…
Abstract
A cutting insert includes a rake face region located on an upper surface, a flank located on a front surface, and a cutting edge located at an intersection between the rake face region and the flank. At least three types of projections having different distances from the cutting edge are on the rake face region. When these three types of projections are arranged in the order of increasing distance from the cutting edge, namely, a first projection, a second projection and a third projection, the top of the second projection is lower than an imaginary straight line connecting the top of the first projection and the top of the third projection in the side view.
Claims23
A cutting insert comprising a rake face region located on an upper surface, a flank located on a front surface, and a cutting edge located at an intersection between the rake face region and the flank, wherein
- at least three types of projections having different distances from the cutting edge are located on the rake face region, and when the three types of projections are represented by a first projection, a second projection and a third projection in the order of their increasing distance from the cutting edge, the top portion of the second projection is located lower than an imaginary straight line connecting the top portion of the first projection and the top portion of the third projection in the side view, and wherein
- a clamp face region clamped by a holder is further located on the upper surface, and in the plane view, the rake face region and the clamp face region are arranged in this order from the cutting edge, and
- the rake face region comprises a edge closer to the clamp face region, and the edge of the rake face region inclines so as to have an increasing distance from the cutting edge, from one end of the cutting edge toward the other end of the cutting edge, in the plane view.
A cutting insert comprising a rake face region located on an upper surface, a flank located on a front surface, and a cutting edge located at an intersection between the rake face region and the flank, wherein
- at least three types of projections having different distances from the cutting edge are located on the rake face region, and when the three types of projections are represented by a first projection, a second projection and a third projection in the order of their increasing distance from the cutting edge, the top portion of the second projection is located lower than an imaginary straight line connecting the top portion of the first projection and the top portion of the third projection in the side view,
- wherein the rake face region has a rake face and an ascending portion inclines upward in the direction away from the cutting edge, and at least the third projection is located at the ascending portion, and
- wherein the third projection comprises a projection located at substantially the central position of the ascending portion.
A cutting insert comprising a rake face region located on an upper surface, a flank located on a front surface, and a cutting edge located at an intersection between the rake face region and the flank, wherein
- at least three types of projections having different distances from the cutting edge are located on the rake face region, and when the three types of projections are represented by a first projection, a second projection and a third projection in the order of their increasing distance from the cutting edge, the top portion of the second projection is located lower than an imaginary straight line connecting the top portion of the first projection and the top portion of the third projection in the side view, and
- wherein a concave portion is located at a region between the cutting edge and the third projection.
Dependencies are inferred from the claim text.