General Workpiece Data - Cycle420 - Siemens SINUMERIK 802D Programming And Operating Manual

9.15 General workpiece data – CYCLE420
Programming
CYCLE420(X_SOLL, X_AB, Z_AB_L, Z_AB_R, F_DL_AB, F_BL_AB, F_DR_AB, F_BR_AB,
F_Z_AB, FFW, USCH, UWERK, Z_LPOS, Z_SCH, ZSTW, F_Z_MESS, N_ABR, N_AWST)
Parameter
Table 9- 12
Parameter
X_SOLL
X_AB
Z_AB_L
Z_AB_R
F_DL_AB
F_BL_AB
F_DR_AB
F_BR_AB
F_Z_AB
FFW
USCH
UWERK
Z_LPOS
Z_SCH
ZSTW
F_Z_MESS
N_ABR
N_AWST
Function
Typically, general workpiece data are valid for each workpiece seat. Hence the cycle must
be called at the beginning of a machining program and after each diameter or change to the
tool peripheral speed.
For dressing prior to the nth workpiece, workpiece counting is performed in the GC_WPC
parameter for each wheel. Dressing takes place whenever the counter can be divided by the
parameter N_AWST without a remainder.
This cycle processes the fine correction parameters for the X and Z axes.
Cylindrical grinding
Programming and Operating Manual, 07/2009, 6FC5398-4CP10-2BA0
Parameters of CYCLE420
Data type Meaning
REAL Diameter for workpiece peripheral speed (WUG)
REAL Dressing amount in X (incr.)
REAL Dressing amount in Z, left/front (incr.)
REAL Dressing amount in Z, right/rear (incr.)
REAL Feedrate in the diameter direction, left
REAL Path feedrate, left
REAL Feedrate in the diameter direction, right
REAL Path feedrate, right
REAL Dressing feedrate in Z
REAL Retraction travel (incr.)
REAL Wheel peripheral speed [m/s]
REAL Workpiece peripheral speed [m/min]
INT Longitudinal position,
0 = no longitudinal positioning
-1 = shoulder left
REAL Z dimension for shoulder
REAL Infeed travel for probe (incr.)
REAL Measuring feedrate
INT Number of dressing strokes
INT Number of workpieces before dressing
9.15 General workpiece data – CYCLE420
Cycles
203