Face Milling: 3-D Compensation With And Without Tool Orientation - HEIDENHAIN ITNC 530 User Manual

Face Milling: 3-D compensation with and
without tool orientation
The TNC displaces the tool in the direction of the surface-normal
vectors by the sum of the delta values (tool table and TOOL CALL).
If M128 (see "Maintaining the position of the tool tip when positioning
with tilted axes (TCPM): M128 (software option 2)" on page 284) is
active, the TNC maintains the tool perpendicular to the workpiece
contour if no tool orientation is programmed in the LN block.
If there is a tool orientation defined in the LN block, then the TNC will
position the rotary axes automatically so that the tool can reach the
defined orientation.
This function is possible only on machines for which you
can define spatial angles for the tilting axis configuration.
Refer to your machine manual.
The TNC is not able to automatically position the rotary
axes on all machines. Refer to your machine manual.
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.
Example: Block format with surface-normal vectors without tool
orientation
LN X+31.737 Y+21.954 Z+33.165
NX+0.2637581 NY+0.0078922 NZ–0.8764339 F1000 M128
186 5 Programming: Tools