HEIDENHAIN CNC Pilot 4290 V7.1 Description of B and Y axes - Manual (Page 91)

HEIDENHAIN CNC PILOT 4290 91
1
.16 TURN PLUS: YZ Plane Cont
ours
YZ plane: Arc
This function defines a circular element in the YZ plane.
Parameters
End point of the arc
Y End point in Cartesian coordinates
Z End point in Cartesian coordinates
Yi Incremental end point
Zi Incremental end point
P End point in polar coordinates
a End point in polar coordinates (reference angle:
positive Z axis)
Pi End point polar, incremental (linear distance from starting
point to end point)
ai End point polar, incremental (reference: Angle between an
imaginary line intersecting the starting point and parallel to
the Z axis, and another line from the starting point to the end
point)
Center point of the arc
YM Center point in Cartesian coordinates (radius)
ZM Center point in Cartesian coordinates
YMi Incremental center point
ZMi Incremental center point
PM Center point in polar coordinates
b Center point in polar coordinates (reference angle:
positive Z axis)
PMi Center point polar, incremental (linear distance from starting
point to end point)
bi Center point polar, incremental (reference: Angle between
an imaginary line intersecting the starting point and parallel to
the Z axis, and another line from the starting point to the end
point)
Other parameters
R Arc radius
Tangential/nontangential: Specify the transition to the
next contour element
WA Angle between positive Z axis and tangent in starting point of
arc
WE Angle between positive Z-axis and tangent in end point of arc
WV Counterclockwise angle between preceding element and
tangent in starting point of arc. If the preceding element is an
arc: Angle to the tangent.
WN Counterclockwise angle between tangent in arc end point
and following element. If the following element is an arc:
Angle to the tangent.