HEIDENHAIN SW 548328-05 DIN Programming - Manual (Page 357)

HEIDENHAIN MANUALplus 620, CNC PILOT 620/640
357
4.26 Milling cy
cles
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 for deburring
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  J not programmed: Mills the programmed contour.
 J programmed, open contour: Calculates and mills the "new"
contour.
4 Returns to retraction plane RB.