HEIDENHAIN iTNC 530 (340 49x-04) ISO programming User Manual
Page 340
340
8 Programming: Cycles
8.3 Cy
cles f
o
r Dr
illing, T
a
pping and Thr
ead Milling
Workpiece surface coordinate
Q203 (absolute
value): Coordinate of the workpiece surface.
2nd set-up clearance
Q204 (incremental value):
Coordinate in the tool axis at which no collision
between tool and workpiece (clamping devices) can
occur.
Feed rate for countersinking
Q254: Traversing
speed of the tool during countersinking in mm/min.
Feed rate for milling
Q207: Traversing speed of the
tool in mm/min while milling.
Example: NC blocks
N250 G263 THREAD MLLNG/CNTSNKG
Q335=10
;NOMINAL DIAMETER
Q239=+1.5
;PITCH
Q201=-16
;DEPTH OF THREAD
Q356=-20
;COUNTERSINKING DEPTH
Q253=750
;F PRE-POSITIONING
Q351=+1
;CLIMB OR UP-CUT
Q200=2
;SET-UP CLEARANCE
Q357=0.2
;CLEARANCE TO SIDE
Q358=+0
;DEPTH AT FRONT
Q359=+0
;OFFSET AT FRONT
Q203=+30
;SURFACE COORDINATE
Q204=50
;2ND SET-UP CLEARANCE
Q254=150
;F COUNTERSINKING
Q207=500
;FEED RATE FOR MILLING