Thank you for the reply, I wiil try and explain.

Lets say the XY move direction of the cutter, for example a knive blade, is in travel direction 90°, then I want to asign axis A = 90°,same goes for if the XY direction change to 180° or if the XY follows an arc I want axis A to always follow the travel direction angle in degrees, so for example if one move in a circular cut clockwise direction from 90 to 180° that A starts at 180 and follow the curve 181,182,183° etc to end up with angle A=270°?