HEIDENHAIN CNC PILOT 640 User Manual page 424

4
R: Apprch angle (default: 0)
R=0: Contour element is approached directly; infeed to starting
point above the milling plane, then vertical plunge
R > 0: Tool moves on approaching/departing arc that connects
tangentially to the contour element
R < 0 with inside corners: Tool moves on approaching/
departing arc that connects tangentially to the contour element
R < 0 with outside corners: Contour element is approached/
departed tangentially on a linear path
P: Plunging depth (indicated as a negative value)
XS: Millg. top edge lateral surface (replaces the reference plane
from the contour definition)
ZS: Millg. top edge face (replaces the reference plane from the
contour definition)
RB: Return plane (default: back to start position)
Front or rear face: Return position in Z direction
Lateral surface: Return position in X direction (diameter)
J: Premach. diam.
For open contours, the contour to be deburred is calculated from
the programmed contour and J.
J programmed: The cycle deburrs both sides of the slot
J not programmed: The deburring tool is so wide that both
sides of the slot are deburred in one pass
D: Start elem.no.
V: End: elem.no.
A: (Mill=0/PredrillPos=1)
Approach and departure: For closed contours, the point of the surface
normal from the tool position to the first contour element is the
point of approach and departure. If no surface normal intersects
the tool position, the starting point of the first element is the point
of approach and departure. For figures, use D and V to select the
approach/departure element.
Cycle run:
1 Starting position (X, Z, C) is the position before the cycle begins
2 Moves to the safety clearance and infeed to the first milling depth
3 Milling:
J not programmed: Mills the programmed contour
J programmed, open contour: Calculates and mills the new
contour
4 Returns to Return plane RB
424
DIN/ISO programming | Milling cycles
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017