HEIDENHAIN SW 548328-05 DIN Programming - Manual (Page 511)

HEIDENHAIN MANUALplus 620, CNC PILOT 620/640
511
6.7 Milling cy
cles f
o
r the Y axis
O Plunging behavior (default: 0)
O=0 (vertical plunge): The cycle moves the tool to the starting
point; the tool plunges at the feed rate for infeed and mills the
pocket.
O=1 (plunge at pre-drilled position):
 If "NF" is programmed: The cycle positions the milling cutter
above the first pre-drilled hole; the tool plunges and mills the
first area. If applicable, the cycle positions the tool to the
next pre-drilled hole and mills the next area, etc.
 If "NF" is not programmed: The tool plunges at the current
position and mills the area. If applicable, position the tool to
the next pre-drilled hole and mill the next area, etc.
O=2, 3 (helical plunge): The tool plunges at the angle "W" and
mills full circles with the diameter "WB." As soon as it reaches
the milling depth "P," the cycle switches to face milling.
 O=2—manually: The cycle plunges at the current position
and machines the area that can be reached from this
position.
 O=3—automatically: The cycle calculates the plunging
position, plunges and machines this area. The plunging
motion ends at the starting point of the first milling path, if
possible. If the pocket consists of multiple areas, the cycle
successively machines all the areas.
O=4, 5 (reciprocating linear plunge): The tool plunges at the
angle "W" and mills a linear path of the length "WB." You can
define the orientation angle in "WE." The cycle then mills along
this path in the opposite direction. As soon as it reaches the
milling depth "P," the cycle switches to face milling.
 O=4—manually: The cycle plunges at the current position
and machines the area that can be reached from this
position.
 O=5—automatically: The cycle calculates the plunging
position, plunges and machines this area. The plunging
motion ends at the starting point of the first milling path, if
possible. If the pocket consists of multiple areas, the cycle
successively machines all the areas. The plunging position is
determined from the type of figure and from "Q" as follows:
 Q0 (from the inside toward the outside):
– Linear slot, rectangle, polygon: Reference point of the
figure
– Circle: Circle center
– Circular slot, "free" contour: Starting point of the
innermost milling path
 Q1 (from the outside toward the inside):
– Linear slot: Starting point of the slot
– Circular slot, circle: Not machined
– Rectangle, polygon: Starting point of the first linear
element
– "Free" contour: Starting point of the first linear element
(at least one linear element must exist)
Parameters—Milling