US 11,504,784 B2Granted

Cutting tool with interconnected arms for increased stiffness to weight ratio

AssigneeKennametal Inc.

InventorsLogan M. Semnisky, Alan J. Bookheimer

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Abstract

A cutting tool with interconnected arms that increases the stiffness to weight ratio of the cutting tool is described. The principles of the invention can be applied to any cutting tool, such as a reamer, a milling cutter, a slotting cutter, and the like. In one example, a cutting ring includes a cutting head assembly with a leading arm, a trailing arm, and a cutting head supported by the leading arm and the trailing arm. The trailing arm interconnects with the leading arm of an adjacent cutting head assembly, and the leading arm interconnects with a trailing arm of another adjacent cutting head assembly. As a result of this interconnection of arms, the axial, radial and tangential stiffness to weight ratio of the cutting tool is increased. A support member may be included to further increase the stiffness to weight ratio.

Claims18

Dependent claims

A cutting tool having a rotational axis, RA, the cutting tool comprising:

a cutting ring comprising a cutting head assembly including a leading arm formed with a helical arc extending radially outwardly from the rotational axis, RA, a trailing arm formed with a helical arc extending radially outwardly from the rotational axis, RA, and a cutting head supported by the leading arm and the trailing arm, the cutting ring further comprising a plurality of guide pad assemblies, each guide pad assembly including a leading arm extending radially outwardly from the rotational axis, RA, a trailing arm extending radially outwardly from the rotational axis, RA, and a guide pad head supported by the leading arm and the trailing arm,
wherein the trailing arm of a cutting head assembly interconnects with the leading arm of a first, adjacent guide pad assembly, and wherein the leading arm of the cutting head assembly interconnects with a trailing arm of a second, adjacent guide pad assembly to increase an axial, radial and tangential stiffness of the cutting tool, thereby increasing a stiffness to weight ratio of the cutting tool.

Dependencies are inferred from the claim text.