HEIDENHAIN CNC PILOT 640 - Y-Axis Contours - Fundamentals; Position of Milling Contours; Cutting Limit

DIN/ISO Programming for the Y axis | Y-axis contours – fundamentals
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HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
6.1 Y-axis contours – fundamentals
Position of milling contours
Define the reference plane and the reference diameter in the
section code.
Specify the depth and position of a milling contour (pocket, island)
in the contour definition:
With Depth P programmed in the previous G308 cycle
Alternatively on figures: Cycle parameter Depth P
The algebraic sign of P defines the position of the milling contour:
P < 0: Pocket
P > 0: Island
Position of milling contour
Section
P
Surface Milling floor
FRONT P < 0
P > 0
Z
Z + P
Z + P
Z
REAR SIDE P < 0
P > 0
Z
Z – P
Z – P
Z
LATERAL P < 0
P > 0
X
X + (P * 2)
X + (P * 2)
X
X: Reference diameter from the section code
Z: Reference plane from the section code
P: Depth from G308 or from the figure definition
The area milling cycles mill the surface specified in the
contour definition. Islands within this surface are not
taken into consideration.
Cutting limit
If parts of the milling contour lie outside of the turning contour,
you must limit the machining area with the area diameter X /
reference diameter X (parameters of the section code or of the
figure definition).