HEIDENHAIN CNC Pilot 4290 - Manual (Page 129)

HEIDENHAIN CNC PILOT 4290 117
Mirror/shift contour G121
Mirrors and or shifts the workpiece blank contour and finished part
contour. The contour is mirrored at the X axis and shifted in Z direction.
The workpiece zero point is not affected.
G121 allows you to use the blank and finished part descriptions for
front and rear-face machining.
Parameters
H:
Mirroring – default: 0
■ H=0: Contour shift – no mirroring
■ H=1: Contour shift, mirroring, and reversal of the direction of
contour description
Q: Mirroring the coordinate system (direction of the Z axis) -
default: 0
■ Q=0: No mirroring
■ Q=1: Mirroring
■ Lateral surface contours are mirrored/
shifted like turning contours.
■ Auxiliary contours are not mirrored.
■ Remember when Q=1: the coordinate
system and the contour are mirrored –
H=1 mirrors only the contour.
Additive zero offset G56
Shifts the workpiece zero point by ”Z” (or ”X”). The shift is given with
respect to the currently active workpiece zero point.
If you shift the workpiece zero point several times with G56, the shift
is always added to the currently active zero point.
Parameters
X, Z: Shift (X radius value) – default: 0
Absolute zero offset G59
Sets the workpiece zero point to X, Z. The new zero point remains in
effect to the end of the program.
Parameters
X, Z: Zero-point shift (X radius dimension)
G59 cancels all previous zero point displacements (with
G51, G53..G55 or G59).
Z: Shift – default: 0
D: Mirroring XC/XCR (mirroring/shifting the front
and rear face contours) - default: 0
■ D=0: No mirroring/shifting
■ D=1: Mirroring/shifting
Continued
4.6 Machining Commands