HEIDENHAIN CNC PILOT 640 User Manual page 604

6
O: Plunging behavior (default: 0)
O=0 (plunge vertically): The cycle moves the tool to the
starting point; the tool plunges and finishes the pocket
O=1 (approaching arc with depth feed): When machining
the upper milling planes, the tool advances to the milling
plane and then approaches on an arc. When machining the
bottom milling plane, the tool plunges to the milling depth
while moving on the approaching arc (three-dimensional
approaching arc). You can use this approach behavior only in
conjunction with an approaching arc R. The precondition is
machining from the outside toward the inside (O=1)
Cutting direction, machining direction and direction of tool rotation.
Cycle run
1 Start position (X, Y, Z, C) is the position before the cycle begins
2 Calculates the number of cutting passes (infeeds to the milling
planes, infeeds in the milling depths)
3 Move to the safety clearance and plunge to the first milling
depth.
4 Mill the first plane.
5 Retract by the safety clearance, return and cut to the next
milling depth.
6 Repeat steps 4 and 5 until the complete area is milled.
7 Returns to Return plane RB
604
DIN/ISO Programming for the Y axis | Milling cycles for the Y axis
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017