Milling cutter with stress reliefs
AssigneeKennametal Inc.
InventorsJames Michael Waggle, Ronald Louis Dudzinsky
Life of this patent
Estimating the term…
Abstract
A cutting tool, such as a milling cutter, includes a tool body and a plurality of pockets for receiving cutting inserts. Each pocket includes a bottom support surface, an radial support surface, an axial support surface, a first corner relief between the bottom support surface and the radial support surface, and a first stress relief formed in the first corner relief at one end of the pocket. The first stress relief is formed at an angle with respect to a plane parallel to the radial support surface. The first stress relief reduces a tensile stress of the cutting tool during a machining operation. A second and third stress relief may be formed in the first corner relief and/or in a second corner relief.
Claims20
A cutting tool comprising:
- a tool body including a plurality of pockets for receiving cutting inserts, each pocket comprising a bottom support surface, an radial support surface, a first corner relief between the bottom support surface and the radial support surface, and a first stress relief formed in the first corner relief at one end of the pocket, the first stress relief formed at an angle with respect to a plane parallel to the radial support surface,
- wherein the first stress relief reduces a tensile stress of the cutting tool during a machining operation.
A cutting tool comprising:
- a tool body including a plurality of pockets for receiving cutting inserts, each pocket comprising a bottom support surface, an radial support surface, an axial support surface, a first corner relief between the bottom support surface and the radial support surface, a second corner relief between the bottom support surface and the axial support surface, a first stress relief formed in the first corner relief at one end of the pocket, the first stress relief formed at an angle with respect to a plane parallel to the radial support surface, and a second stress relief formed in the second corner relief at another end of the pocket, the second stress relief formed at an angle with respect to a plane parallel to the axial support surface,
- wherein the first and second stress reliefs reduce a tensile stress of the cutting tool during a machining operation.
A cutting tool comprising:
- a tool body including a plurality of pockets for receiving cutting inserts, each pocket comprising a bottom support surface, an radial support surface, a first corner relief between the bottom support surface and the radial support surface, a first stress relief formed in the first corner relief at one end of the pocket, the first stress relief formed at an angle with respect to a plane parallel to the radial support surface, and a third stress relief formed in the first corner relief at an opposite end of the pocket, the third stress relief formed at an angle with respect to the plane parallel to the radial support surface,
- wherein the first and third stress reliefs reduce a tensile stress of the cutting tool during a machining operation.
Dependencies are inferred from the claim text.