Siemens SINUMERIK 828D Manual page 161

Reference section
BSPLINE Activation of B spline
SD=... B spline order (max. 3)
PL=... Interval length (node vector), "Non-uniformity"
PW=... Weightings, i.e. denominator of rational B splines with polynomial
representation
Example
N20 BSPLINE X... Y... SD=... PL=... PW=...
POLY Activation of polynomial interpolation, B spline representation in
SD=... polynomial format
PL= ... B spline order (max. 5!! -> different from BSPLINE)
Interval length (node vector), "Non-uniformity"
Syntax
PO[axis] = (block end position, a2 (quadratic coefficient),
a3 (cubic coefficient), a4, a5) -> numerator polynomials
PO[ ] = (Nblock end, b2, b3, b4, b5) -> denominator polynomial
Example
N10 POLY PO[X] = (0.25,0.5,0) PO[Y] = (0.433,0,0) PO[] = (1,1,0)
Compressor
COMPCAD Surface-optimized compressor (constant acceleration)
Also see CYCLE832
COMPSURF Optimized compressor for inclined line-by-line finishing programs with
poor data quality or irregular point distribution
Only in conjunction with Top Surface
COMPCURV Transitions with constant acceleration and jerk-free transitions
COMPON Transitions with constant velocity
UPATH Additional commands for combining path and synchronized axes.
Parameter assignment for synchronized axes corresponds to path axes,
i.e. the following applies to the motion of a synchronized axis A: A = f(u),
where u denotes the path parameter for the path motion.
SPATH Parameter assignment of the synchronized axes follows the arc length
for the path axes, i.e. the following applies to the motion of a
synchronized axis A: A = f(s), where s denotes the arc length for the path
motion.
© Siemens AG All rights reserved SINUMERIK, Manual, Mold-Making with 3- to 5-Axis Simultaneous Milling
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