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6.5.6 Automatic Compensation of Offset for Tilting Axes
Miscellaneous
function M114
December 2001
Unlike the "tilted working plane," here the coordinate system is not tilted.
With M114 or M128, the TNC compensates the offset of the tool that results
from tilting the axes. The tool tip is always located on the programmed
nominal- coordinates.
Z
The TNC can perform a 3-D length compensation; the radius compensation
must be performed by the CAD system or the postprocessor. If the TNC
compensates the tool length, then the programmed feed rate refers to the tool
point. Otherwise it refers to the tool datum.
Automatic compensation with M114:
n
Linear and rotational movements are superimposed. The resulting contour
deviations depend on the length of the linear interpolation.
n
When the table is rotated, the coordinate system is rotated against the
machine coordinate system. The TNC does not take this into account.
n
As of NC software 280-472-xx: M114 can be used with non-controlled tilting
axes or PLC tilting axes. In this case, the current tilting angle and the tilting
axis are entered in the NC block behind M114.
Tilting Axes
B
B
dz
dx
dB
X
6 – 83
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