HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 110)

110
4.1 DIN Pr
ogr
a
mming
Linear and rotary axes
Principal axes: Coordinates of the X, Y and Z axes refer to the
workpiece zero point.
C axis as reference axis:
„ Angle data are with given respect to the zero point of the C axis.
„ C-axis contours and C-axis operations:
„ Positions on the front/rear face are entered in Cartesian
coordinates (XK, YK), or polar coordinates (X, C)
„ Positions on the lateral surface are entered in polar coordinates (Z,
C). Instead of C, the linear value CY is used (“unrolled” reference
diameter).
B axis—tilted working plane: The B axis makes it possible to drill,
bore and mill in oblique planes. The coordinate system is tilted for
programming in such a way that you can define the drilling patterns
and milling contours in the YZ plane. Machining is then conducted in
the tilted plane.
Secondary axes (auxiliary axes): In addition to the principal axes, the
CNC PILOT supports:
„ U:Linear axis in X direction
„ V:Linear axis in Y direction
„ W:Linear axis in Z direction
„ A:Rotary axis that rotates about X
„ B:Rotary axis that rotates about Y
„ C:Rotary axis that rotates about Z
The auxiliary axes are only programmed in the MACHINING section,
using the functions G0 to G3, G12, G13, G30, G62 and G701. A circular
interpolation is only possible in the principal axes. Rotary axes
(auxiliary axes) are programmed in the MACHINING section, using
G15.
B
B
Z
Y
X
A
B
C
U
V
W
Remember about negative X coordinates
„ Not allowed with contour descriptions
„ Not allowed for turning cycles
„ The contour follow-up is switched off
„ The direction of rotation for circular arcs (G2/G3, G12/
G13) has to be set manually
„ The position of the tool radius compensation (G41/G42)
has to be set manually
„ The DIN editor respects only address letters of the
configured axes.
„ The behavior of the rotary axes B and C depends on
whether they have been configured as principal or
auxiliary axes.