Siemens SINUMERIK 840D sl Function Manual page 121

PO[XH] = (xe, x2, x3, x4, x5): (xe, ye, ze) the end point of the curve, and
PO[YH] = (ye, y2, y3, y4, y5): xi, yi, zi the coefficients of the polynomials
PO[ZH] = (ze, z2, z3, z4, z5): of the 5th degree maximum.
This type of interpolation can be used to program points (G1) or polynomials (POLY) for the
two curves in space.
Note
Circles or involutes are specificaly not allowed. It is also possible to activate a spindle
interpolation with BSPLINE. The programmed end points of both curves in space are then
interpreted as nodes.
Other types of splines (ASPLINE and CSPLINE) and the activation of a compressor
(COMPON, COMPCURV, COMPCAD) are not permitted here.
Supplementary conditions
The extended interpolation of orientations requires that all necessary orientation
transformations be considered, since these belong to the functional scope.
Activation
A change in orientation on any peripheral surface of a cone in space is activated with the G-
code of group 51 through extended interpolation of the orientation vector, using the following
commands:
ORIPLANE
ORICONCW
ORICONCCW
ORICONIO
ORICONTO
ORICURVE
ORIPATH
ORIPATHS
Special functions
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Interpolation in a plane with specification of the end orientation
(same as ORIVECT)
Interpolation on a peripheral surface of a taper in clockwise
directionwith specification of the end orientation and taper di‐
rection or opening angle of the cone.
Interpolation on the peripheral surface of a cone in the counter-
clockwise direction. Specification of the end orientation andt
cone direction or opening angle of the taper.
Interpolation on a peripheral surface of a cone with specifica‐
tion of end orientation and an intermediate orientation.
Interpolation on a peripheral surface of a cone with tangential
transition and specification of end orientation.
Interpolation of orientation with specification of motion of two
contact points of the tool.
Tool orientation in relation to the path
Tool orientation in relation to the path, when, for example, a
kink in the orientation path, e.g. at a corner in the contour, is
to be smoothed, see Section "Orientation relative to the path
(Page 94)").
F2: Multi-axis transformations
2.11 Orientation vectors
121