02-10-2012, 04:14 PM
Basic Nomenclature and Definitions for Single - Point Cutting Tools
Basic Nomenclature.pdf (Size: 2.64 MB / Downloads: 251)
Tool-in-Hand System
Tool Reference Plane (P,). A plane through
the selected point on the cutting edge, so chosen as
to be either parallel or perpendicular to a plane or
axis of the tool convenient for locating or orienting
the tool for its manufacture, sharpening or measurement.
Working Angles
The working angles are defined with the aid of the
tool-in-use reference system of planes specified in
Section 5.3.
The sum of the working normal clearance (6.3.2),
the normal wedge angle (6.3.7) and the working normal
rake (6.3.1) is equal to 90".
In practice, the working normal rake, working normal
clearance and working cutting edge inclination
(6.3.6) are usually acute angles.