Cutting tool assembly
AssigneeKennametal Inc.
InventorWilliam D. Armbrust
Life of this patent
Estimating the term…
Abstract
Disclosed is a cutting tool assembly having a hard, wear resistant insert, a shim and a blade body. The shim has a rearwardly extending recess for receiving the insert. The insert abuts against a top, bottom and rear portion of the shim recess. The shim recess tapers toward the open end of the shim recess to springingly hold the insert. The blade body has a downwardly and rearwardly extending recess on a first end for receiving the shim and insert. The blade body recess is also inclined to the longitudinal axis of the blade body. The blade body recess tapers toward the blade body so as to wedgingly hold the shim and insert.
Claims26
A cutting tool assembly comprising:
- a hard wear resistant insert having a forward cutting portion, a shim and a blade body having a longitudinal axis, said shim having a rearwardly extending recess for receiving said insert, said insert resting against the rear portion of said shim recess, said shim recess tapering toward the open end of said shim recess to springingly hold said insert, said blade body having a downwardly and rearwardly extending recess on a first end for receiving said shim and insert, said blade body recess also being inclined to said longitudinal axis of said blade body, said blade body recess tapering toward said blade body to wedgingly hold said shim and insert.
A shim and insert for use in a cutting tool assembly comprising:
- a hard wear resistant insert and a shim, said insert having a forward cutting portion, a seating portion directly opposed to said cutting portion, an upper peripheral edge and a lower peripheral edge;
- said shim having an upper arm of substantially uniform cross section and a rearwardly extending recess for receiving said insert, said recess having an upper portion, a lower portion and a rear portion;
- the upper and lower portions of said shim recess engaging the upper and lower peripheral edges, respectively, of said insert, said recess tapering the open end of said recess to springingly hold said insert, said shim having a longitudinal slot extending rearward of said recess, and when said shim and insert are fully engaged, the seating portion of said insert rests against the rear portion of said shim recess, said shim having a land portion of reduced cross sectional thickness rearward of said rear portion of said shim recess, said land being the bottom of a notch formed between said shim and said seating portion of said insert when said shim recess receives said insert.
Dependencies are inferred from the claim text.