Cutting insert for machining a workpiece
AssigneeKennametal Widia Produktions GmbH & Co. KG
InventorJürgen Zastrozynski
Life of this patent
Estimating the term…
Abstract
A cutting insert for machining a workpiece. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
Claims14
A cutting insert comprising:
- a bearing surface and a rake surface being disposed opposite to and spaced apart from said bearing surface;
- at least one flank surface being disposed between and connecting said bearing surface and said rake surface;
- said at least one flank surface being disposed at an acute angle to said rake surface to form a positive clearance angle and at an obtuse angle to said bearing surface;
- a round or circular cutting edge disposed about a perimeter of said rake surface;
- said cutting edge including a first cutting edge point and a second cutting edge point;
- said first cutting edge point located at a maximum distance from a plane parallel to said bearing surface and perpendicular to a central axis of said cutting insert;
- said second cutting edge point located at a minimum distance from the plane parallel to the bearing surface,
- wherein the minimum distance is less than the maximum distance;
- and
- wherein each of said first and second cutting edge points are disposed at a radial distance from a central axis of the said cutting insert in such a way that each of said first and second cutting edge points are located in a cylindrical plane disposed about and parallel to the central axis of the cutting insert.
A cutting insert comprising:
- a bearing surface and a rake surface being disposed opposite to and spaced apart from said bearing surface;
- a plurality of flank surfaces being disposed between and connecting said bearing surface and said rake surface;
- said plurality of flank surfaces being disposed at an acute angle to said rake surface to form a positive clearance angle and at an obtuse angle to said bearing surface;
- a polygonal cutting edge disposed about the perimeter of said rake surface;
- each side of said polygonal cutting edge including a first cutting edge point, a second cutting edge point, and a third cutting edge point located between the first and second cutting edge point;
- said first cutting edge point located at a maximum distance from a plane parallel to said bearing surface and perpendicular to a central axis of said cutting insert;
- said second cutting edge point located at a minimum distance from the plane parallel to said bearing surface,
- said third cutting edge point located at a distance from a plane parallel to said bearing surface,
- wherein the minimum distance is less than the maximum distance, and
- wherein the distance of said third cutting edge point is less than the maximum distance and greater than the minimum distance, and
- wherein the first, second and third cutting edge points all lie in a plane that is parallel to a central axis of said cutting insert.
Dependencies are inferred from the claim text.