2. CAUTIONS FOR USING
VARIOUS FUNCTIONS AND
PRECAUTIONS OF Symbolic FAPT
Let’s confirm, referring to the following examples, that the major
cutting edge direction angle and minor cutting edge direction angle are
obtained as desired, irrespective of the drawing format.
(Example 1) When drawing format is 1 or 2;
Input data; AC = 30, AN = 45, AS = –90
Internal processing; A = AS–AC = –120 ...
Major cutting edge direction angle. . . . . .
A’ = AS–AC’ = AS–(AC+AN) = –165
Minor cutting edge direction angle. . . . . .