NCT Group 2000M, 99M manual Tool Compensation

14 The Tool Compensation

Machining an inside corner with a radius smaller than the tool radius. The control returns error message 3048 INTERFERENCE ALARM or else overcutting would occure.

Fig. 14.5.8-5

Milling a step smaller than the tool radius along an arc. If parameter ANGLAL is 0, the control will delete vector PL2 and will interconnect vectors PL1 and PL3 by a straight line to avoid a cut-in. If parameter ANGLAL is 1 it returns error message 3048 INTERFERENCE ALARM and stops at the end of previous block.

Fig. 14.5.8-6

Sometimes the tool would not actually overcut the workpiece, but the interference check indicates an error.

If a recess smaller than the radius compensation is being machined, actually no overcut would occur (see the Figure), yet the control returns error message 3048 INTERFERENCE

ALARM because the direction of displacement along the compensated path in interpolation B is

opposite to the programmed one.

Fig. 14.5.8-7

110