Siemens sinumerik 840D sl Function Manual page 73

Contour accuracy
The maximum deviations are not defined separately for each axis, instead the maximum
geometric deviation of the contour (geometry axes) and of the tool orientation are checked.
This is performed using the following setting data:
1. SD42475 $SC_COMPRESS_CONTUR_TOL
2. SD42476 $SC_COMPRESS_ORI_TOL
3. SD42477 $SC_COMPRESS_ORI_ROT_TOL
Using setting data
The following machine data can be used to set a particular type of tolerance specification:
MD20482 $MC_COMPRESSOR_MODE (mode of compression)
Value 0:
Value 1:
Value 2:
Value 3:
It is only possible to specify a maximum angular deviation for tool orientation if an orientation
transformation (TRAORI) is active.
Special functions: 3-Axis to 5-Axis Transformation (F2)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
(Maximum contour deviation on compression)
(Maximum angular displacement for tool orientation compression)
(Maximum angular displacement for the angle of rotation of the tool - only available on 6-
axis machines)
Axial tolerances with machine data MD33100 $MA_COMPRESS_POS_TOL
(maximum deviation with compression) for all axes (geometry and orientation
exes).
Specification of contour tolerance with machine data SD42475
$SC_COMPRESS_CONTUR_TOL (maximum contour deviation at
compression), tolerance for orientation via axial tolerances with MD33100
$MA_COMPRESS_POS_TOL (maximum deviation at compression).
Specification of maximum angle deviation for:
• Tool orientation with setting data
SD42476 $SC_COMPRESS_ORI_TOL (maximum deviation of WZ
orientation compression)
• Tolerance for contour via axial tolerances with machine data MD33100
$MA_COMPRESS_POS_TOL.
Specification of contour tolerance with setting data SD42475
$SC_COMPRESS_CONTUR_TOL and specification of maximum angle
tolerance for tool orientation with setting data SD42476
$SC_COMPRESS_ORI_TOL.
Detailed description
2.8 Orientation
67