HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 272)

272
4.27 Milling Cy
cles
G845 – Milling
You can change the milling direction with the cutting direction H, the
machining direction Q and the direction of tool rotation (see following
table). Program only the parameters given in the following list.
See also:
„ G845—Fundamentals: Page 270
„ G845—Calculating hole positions: Page 271
Parameters—Milling
NS Block number—reference to the contour description
P (Maximum) milling depth (infeed in the working plane)
I Oversize in X direction
K Oversize in Z direction
U (Minimum) overlap factor. Defines the overlap of milling paths
(default: 0.5).
Overlap = U*milling diameter
H Cutting direction (default: 0)
„ H=0: Up-cut milling
„ H=1: Climb milling
F Feed rate for infeed (default: active feed rate)
Starting with software version 625 952-05: F is used as
machining feed rate for reciprocating or helical plunging.
E Reduced feed rate for circular elements (default: current feed
rate)
J Retraction plane (default: back to starting position)
„ Front or rear face: Retraction position in Z direction
„ Lateral surface: Retraction position in X direction (diameter)
Q Machining direction (default: 0)
„ Q=0: From the inside toward the outside
„ Q=1: From the outside toward the inside
A Sequence for “Milling”: A=0 (default=0)
NF Position mark—reference from which the cycle reads the hole
positions [1 to 127].
O Plunging behavior (default: 0)
Plunge vertically O=0: The cycle moves the tool to the
starting point; the tool plunges at the feed rate for infeed and
mills the pocket.