Ceramic cutting insert and a method of manufacturing a ceramic cutting insert
AssigneeSandvik Intellectual Property AB
InventorPer Blomstedt
Life of this patent
Estimating the term…
Abstract
A ceramic cutting insert, including a face ground top surface, and at least one peripheral clearance surface adjacent to an edge, from which a reinforcing chamfer surface extends inward. The chamfer surface forms a first acute angle with a reference plane that is parallel to the top surface. A generally concave unground intermediate surface is formed between the top surface and the chamfer surface, the intermediate surface at the transition to the top surface forming a second angle with the top surface that is greater than the first angle, and the width of the chamfer surface being greater than the width of the intermediate surface.
Claims9
A ceramic cutting insert, comprising:
- a face ground top surface, and at least one peripheral clearance surface adjacent to an edge, from which a reinforcing chamfer surface extends inward, the chamfer surface forming a first acute angle with a reference plane that is parallel to the top surface, wherein a generally concave unground intermediate surface is formed between the top surface and the chamfer surface, the intermediate surface at the transition to the top surface forming a second angle with the top surface that is greater than the first angle, and the width of the chamfer surface being greater than the width of the intermediate surface.
A ceramic cutting insert, comprising:
- a face ground top surface;
- a cutting edge;
- a peripheral clearance surface adjacent to the cutting edge;
- a reinforcing chamfer surface extending from the clearance surface and forming a first acute angle with a reference plane that is parallel to the top surface;
- and
- a generally concave unground intermediate surface extending between the chamfer surface and the top surface, the intermediate surface forming a second angle with the top surface at a transition to the top surface, the second angle being greater than the first angle, the chamfer surface having a radial width that is greater than a radial width of the intermediate surface.
Dependencies are inferred from the claim text.