532 Programming: Execution of CAM Programs, Multi-axis Machining
12.7 Three-dimensional tool compensation (software option 2)
3-D compensation 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).
Example: Block format with surface-normal vectors
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)", page 524) is
active, the TNC maintains the tool perpendicular to the workpiece
contour if no tool orientation is programmed in the LN block.
If a tool orientation T is defined in the LN block and M128 (or TCPM
FUNCTION) is active at the same time, the TNC will position the rotary
axes automatically so that the tool can reach the defined orientation.
If you have not activated M128 (or TCPM FUNCTION), then the TNC
ignores the direction vector T, even if it is defined in the LN block.
1 LN X+31.737 Y+21.954 Z+33.165
NX+0.2637581 NY+0.0078922 NZ-0.8764339 F1000 M3
LN: Straight line with 3-D compensation
X, Y, Z: Compensated coordinates of the straight-line end point
NX, NY, NZ: Components of the surface-normal vector
F: Feed rate
M: Miscellaneous function
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.
To Next Page
Loading...
