Toolholder and cutting insert for a toolholder assembly
AssigneeKennametal Inc.
InventorsTed Massa, David Siddle
Life of this patent
Estimating the term…
Abstract
A toolholder and cutting insert for a toolholder assembly wherein the cutting insert has a tapered shank which provides a resilient interference fit with a tapered section of a bore extending within the toolholder. Additionally, a rearwardly facing face on the cutting insert abuts with a forwardly facing surface on the toolholder to properly locate the cutting insert within the toolholder.
Claims30
A toolholder adapted to accept a cutting insert having a tapered shank and a rearwardly facing face thereon, wherein the toolholder comprises:
- a) a toolholder body;
- b) a bore extending rearwardly therein and having a central axis extending therethrough;
- c) a forwardly facing surface extending about the bore for abutment with the rearwardly facing face of the insert;
- d) wherein the bore has a tapered section dimensioned to provide a resilient interference fit with the shank when the forwardly facing surface is in abutment with the rearwardly facing face and wherein the tapered section narrows as the bore extends rearwardly.
A toolholder adapted to accept a cutting insert having a tapered shank and a rearwardly facing face thereon, wherein the toolholder comprises:
- a) a toolholder body;
- b) a bore extending rearwardly therein, having a central axis extending therethrough, and wherein the bore has a section that is tapered and narrows as the bore extends rearwardly;
- and
- c) a forwardly facing surface extending about the bore and generally perpendicular to the central axis.
A cutting insert adapted to be mounted within a toolholder having a bore extending rearwardly therein and a forwardly facing surface thereon, wherein the insert comprises:
- a) a cutting insert body having a forward end with a cutting edge thereupon;
- b) a shank receivable in the bore, extending rearwardly from the forward end, and having a central axis extending therethrough;
- c) a rearwardly facing face between the forward end of the insert body and the shank of the insert body for abutment with the forwardly facing surface of the toolholder;
- and
- d) wherein the shank has a tapered section dimensioned to provide a resilient interference fit with the bore when the rearwardly facing face of the insert body is in abutment with the forwardly facing surface of the toolholder, and wherein the tapered shank narrows as it extends rearwardly.
A cutting insert adapted to be mounted within a toolholder having a bore extending rearwardly therein and a forwardly facing surface extending about the bore, wherein the insert comprises:
- a) a cutting insert body;
- b) a shank receivable in the bore, extending rearwardly from a forward end of the insert body, and having a central axis extending therethrough, wherein the shank has a section that is tapered and narrows as the shank extends rearwardly;
- and
- c) a rearwardly facing face generally perpendicular to the central axis and located between the forward end of the insert body and the shank of the insert body.
A toolholder system comprising:
- a) a toolholder body having:
- 1) a toolholder bore extending rearwardly therein and having a central axis extending therethrough;
- 2) a forwardly facing surface extending about the bore;
- b) a cutting insert body having:
- 1) a forward end with a cutting edge thereupon;
- 2) an insert shank extending rearwardly from the forward end and having a central axis extending therethrough;
- and
- 3) a rearwardly facing face between the forward end of the insert and the shank of the insert;
- c) wherein the forwardly facing surface of the toolholder is in contact with the rearwardly facing face of the insert;
- and
- d) wherein the toolholder bore has a tapered section and the shank has a slightly mismatched taper, wherein each is dimensioned to provide a resilient interference fit with each other when the forwardly facing surface of the toolholder is in abutment with the rearwardly facing face of the insert.
A method of releasably mounting a cutting insert onto a toolholder having a bore extending rearwardly therein and a forwardly facing surface extending about the bore, wherein the insert has a forward end, a shank extending rearwardly therefrom, and a rearwardly facing face, and wherein the shank has a taper narrowing away from the forward end, the method comprising the steps of:
- a) inserting the insert into the toolholder bore;
- b) resiliently interference fitting the tapered shank into the toolholder bore;
- and
- c) abutting the rearwardly facing face of the insert against the forwardly facing surface of the toolholder.
Dependencies are inferred from the claim text.