Cutting insert, cutting tool, and method for manufacturing machined product
AssigneeKYOCERA Corporation
InventorMitsuru Hasegawa
Life of this patent
Estimating the term…
Abstract
In an embodiment, a cutting insert including a base member, a first face, a second face, a cutting edge, and a nose portion. The base member includes a coating layer on at least a part thereof. The first face has corner portions. The second face is adjacent to the first face. The cutting edge is on at least a part of the ridgeline portion of the first face and the second face, and includes first and second cutting edges. The first cutting edge is on the coating layer and has a C chamfered surface with a first width of 5 μm to 30 μm in the front view of the first face and a chamfer angle of 35° to 50°. The nose portion is at the corner portions between the first cutting edge and the second cutting edge.
Claims18
A cutting insert, comprising:
- a base member including a coating layer on at least a part thereof;
- a first face comprising a plurality of corner portions;
- a second face adjacent to the first face;
- a cutting edge located on at least a part of a ridgeline portion between the first face and the second face, and comprising:
- a first cutting edge on the coating layer, having a C chamfered surface with a first width of 5 μm to 30 μm in the front view of the first face and a chamfer angle of 35° to 50°;
- and
- a second cutting edge;
- and
- a nose portion located at the corner portions of the first face between the first cutting edge and the second cutting edge,
- wherein the second cutting edge has a second width narrower than the first width in the front view of the first face.
A cutting insert, comprising:
- a base member including a coating layer on at least a part thereof;
- a first face comprising a plurality of corner portions;
- a second face adjacent to the first face;
- a cutting edge located on at least a part of a ridgeline portion between the first face and the second face, and comprising:
- a first cutting edge on the coating layer, having a C chamfered surface with a first width of 5 μm to 30 μm in the front view of the first face and a chamfer angle of 35° to 50°;
- and
- a second cutting edge;
- and
- a nose portion located at the corner portions of the first face between the first cutting edge and the second cutting edge,
- wherein a width of the cutting edge in a front view of the first face gradually narrows from the first cutting edge toward the second cutting edge.
A cutting insert, comprising:
- a base member including a coating layer on at least a part thereof;
- a first face comprising a plurality of corner portions;
- a second face adjacent to the first face;
- a cutting edge located on at least a part of a ridgeline portion between the first face and the second face, and comprising:
- a first cutting edge on the coating layer, having a C chamfered surface with a first width of 5 μm to 30 μm in the front view of the first face and a chamfer angle of 35° to 50°;
- and
- a second cutting edge;
- and
- a nose portion located at the corner portions of the first face between the first cutting edge and the second cutting edge,
- wherein an arithmetic average roughness on the second face is smaller than an arithmetic average roughness on the first face.
Dependencies are inferred from the claim text.