492 Programming: Multiple Axis Machining
12.6 Three-Dimensional Tool Compensation (Software Option 2)
Peripheral milling: 3-D radius compensation
with workpiece orientation
The TNC displaces the tool perpendicular to the direction of
movement and perpendicular to the tool direction by the sum of the
delta values DR (tool table and TOOL CALL). Determine the
compensation direction with radius compensation RL/RR (see figure,
traverse direction Y+). For the TNC to be able to reach the set tool
orientation, you need to activate the function M128 (see “Maintaining
the position of the tool tip when positioning with tilted axes (TCPM):
M128 (software option 2)” on page 482). The TNC then positions the
rotary axes automatically so that the tool can reach the defined
orientation with the active compensation.
This function is possible only on machines for which you
can define spatial angles for the tilting axis configuration.
Refer to your machine tool manual.
The TNC is not able to automatically position the rotary
axes on all machines. Refer to your machine tool manual.
Note that the TNC makes a compensating movement by
the defined delta values. The tool radius R defined in the
tool table has no effect on the compensation.
Danger of collision!
On machines whose rotary axes only allow limited
traverse, sometimes automatic positioning can require
the table to be rotated by 180°. In this case, make sure
that the tool head does not collide with the workpiece or
the clamps.
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