NCT Group 99M, 2000M manual Tool Compensation

Fig. 14.5.7-12

14 The Tool Compensation

Fig. 14.5.7-10

A particular program detail or subprogram may be used also for machining a male or female work- piece with positive or negative radius compensation, respectively, or vice-versa.

Let us review the following small program detail:

...

N020 G42 G1 X80 D1

N030 G1 Z-5

N040 G3 I-80

N050 G1 Z2

N060 G40 G0 X0

...

Fig. 14.5.7-11

When the radius compensation is applied to a circle of a variable radius, the control will calculate the compensation vector(s) to an imaginary circle at the start point thereof, the radius of which is equal to the start-point radius

of the programmed circle, the center point coinciding with the programmed one. The

compensation vector(s) will be computed to an imaginary circle at the end point of it, the radius

of which is equal to the end-point radius of the programmed circle, the center point coinciding with that of the programmed circle.

105