Cutting tool
OwnerWilliam R. Veghinventor
Life of this patent
Estimating the term…
Abstract
An improved cutting tool 10 for rotary cutting is described, The tool has a holder 12, a seat 26 and a cutting insert 32. The seat 26 is provided with a wear indicator 30 which creates sparks when the wear indicator comes in contact with the workpiece. The wear indicator 31 is also able to be located in the cutting insert 33. The sparks alert the user of potential future damage to the holder due to contact with the workpiece.
Claims28
In a cutting tool for rotary machining of a workpiece including a cutting insert and a holder for mounting the cutting insert, wherein the cutting insert has a cutting edge which projects from the holder such that the holder is spaced apart from the cutting of the workpiece, the improvement which comprises:
- a spark generator means mounted on the cutting tool by a securing means adjacent the cutting edge of the insert, wherein sparks are continuously generated by the spark generator means contacting the workpiece when the cutting insert is worn such that the holder will not be damaged by the workpiece being cut and wherein the sparks can be viewed by an operator at a safe distance from the workpiece which is being cut.
A method for rotary machining without damaging a holder for a cutting insert in a cutting tool which comprises:
- (a) providing the cutting tool for rotary machining of a workpiece including the cutting insert and a holder for mounting the cutting insert, wherein the cutting insert has a cutting edge which projects from the holder such that the holder is spaced from the cutting insert, and a spark generator means provided adjacent the cutting edge-of the insert, wherein sparks are continuously generated by the spark generator means contacting the workpiece when the cutting insert is worn such that the holder will not be damaged by the workpiece being cut and wherein the sparks can be viewed by an operator at a safe distance from the workpiece which is being cut;
- (b) cutting the workpiece with the tool until the spark generator means engages the workpiece to produce the sparks;
- and
- (c) mounting a second cutting edge on the tool.
Dependencies are inferred from the claim text.