HEIDENHAIN CNC Pilot 4290 V7.1 Description of B and Y axes - Manual (Page 23)

HEIDENHAIN CNC PILOT 4290 23
1
.4 DIN PLUS: Section Codes
SURFACE_Y section
The section code identifies the YZ plane (G19). For machines equipped
with a B axis, it defines the tilted plane.
Without B axis: The reference diameter defines the contour position
in the X direction; the C axis angle defines the position on the
workpiece.
With B axis (see figures): SURFACE_Y additionally performs the
following transformations and rotations for the tilted plane:
„ Shifts the coordinate system to the position I, K
„ Rotates the coordinate system by the angle B; reference point: I, K
„ H=0: Shifts the rotated coordinate system by –I. The coordinate
system is moved “back.”
Shifting “back” coordinate system: The CNC PILOT evaluates the
reference diameter for the cutting limit. This value is also used as the
reference value for the depth that you program for drilling operations
and milling contours.
Since the reference diameter is referenced to the current zero point,
it is recommended when working in a tilted plane, to shift the rotated
coordinate system “back” by the distance –I. If the cutting limits are
not needed, for example for drilling holes, you can disable the shift of
the coordinate system (H=1) and set the reference diameter to 0.
Example: “SURFACE_Y”
PROGRAMMKOPF [PROGRAM HEAD]
...
CONTOUR Q1 X0 Z600
ROHTEIL [BLANK]
...
FERTIGTEIL [FINISHED PART]
...
MANTEL_Y X118 C0 B130 I59 K0 [SURFACE_Y]
...
BEARBEITUNG [MACHINING]
...
X
H=0 B, I, K
–K
I
Z
B
H=1
–I
Z
B
X
Z
B
X
Parameters
X
Reference diameter
C C axis angle—Defines the spindle position
Parameters
X
Reference diameter
C C axis angle—Defines the spindle position
B Plane angle: Positive Z axis
I Plane reference in X direction (radius)
K Plane reference in Z direction
H Automatic shift of the coordinate system (default: 0)
„ 0: The rotated coordinate system is shifted by –I
„ 1: The coordinate system is not shifted
Please note:
„ X is the infeed axis in a tilted coordinate system. X
coordinates are entered as diameter coordinates.
„ Mirroring the coordinate system has no effect on the
reference axis of the tilt angle (“B axis angle” of G714).