Explain the Tool Signature
The tool angles have been standardized by the American standards association. The seven important elements comprise the signature of the cutting tool and are stated in the following order. Back rake angle, side rake angle, end relief angle, side relief angle, end cutting edge angle, side cutting end angle nose radius. It is usual to omit the symbols for degrees and mm, simply having tool signature as 10,10,6,6,8,2 will have the following angles:
Back rake angle = 10°
Side rake angle = 10°
End relief angle = 6°
Side relief angle = 6°
End cutting edge angle = 8°
Side cutting edge angle = 8°
Nose radius = 2 mm