Siemens SINUMERIK 828D

This circle displays the results after the feed precontrol has been optimized. However, the
mean radius is 0,0019 mm too large:
X1: active measuring system Parameter
Z1: active measuring system Radius: 10.00000 mm
Feedrate: 3000.00000 mm/min
Measure‐
ment time:
1257 ms
X1: active measuring system
Z1: active measuring system
Representation
Resolution: 0.01000 mm
Display of. mean radius
Radius: 10.00190 mm
Delta R: 4.02698 μm
Parameters / machine data X axis Z axis
MD32200 $MC_POSCTRL_GAIN 8.500 8.500
p1460 SPEEDCTRL_GAIN1 3.01 3.89
p1462 SPEEDCTRL_INTEGRATOR_TIME_1 6.18 6.18
p1463 SPEEDCTRL_REF_MODEL_FREQ 106.3 106.3
p1440 NUM_SPEED_FILTERS 0 0
MD32610 $MC_VELO_FFW_WEIGHT 1.0 1.0
MD32620 $MC_FFW_MODE 3 3
MD32810 $MC_EQUIV_SPEEDCTRL_TIME 0.0022 0.0022
MD32400 $MC_AX_JERK_ENABLE 1 1
MD32402 $MC_AX_JERK_MODE 2 2
MD32410 $MC_AX_JERK_TIME 0.012 0.012
Example 2 for optimization
This
circle
shows
the
effect of a slightly different time constant for the axial jerk filter. The time
constant is adapted in order to correct this type of error:
Parameters / machine data X axis Z axis
MD32400 $MC_AX_JERK_ENABLE 1 1
MD32402 $MC_AX_JERK_MODE 2 2
MD32410 $MC_AX_JERK_TIME 0.012 0.0125
X1: active measuring system Parameter
Z1: active measuring system Radius: 10.00000 mm
Tuning
6.6 Circularity test
CNC commissioning
Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3 209