HEIDENHAIN TNC 320 (340 551-01) - Manual (Page 183)

HEIDENHAIN TNC 320 183
8.2 Cy
cles f
o
r Dr
illing,
T
apping and Thr
ead Milling
8 Set-up clearance Q200 (incremental value): Distance
between tool tip and workpiece surface. Enter a
positive value.
8 Depth Q201 (incremental value): Distance between
workpiece surface and bottom of hole (tip of drill
taper).
8 Feed rate for plunging Q206: Traversing speed of
the tool during drilling in mm/min.
8 Plunging depth Q202 (incremental value): Infeed per
cut. The depth does not have to be a multiple of the
plunging depth. The TNC will go to depth in one
movement if:
„ the plunging depth is equal to the depth
„ the plunging depth is greater than the depth
8 Dwell time at top Q210: Time in seconds that the
tool remains at set-up clearance after having been
retracted from the hole for chip release.
8 Workpiece surface coordinate Q203 (absolute
value): Coordinate of the workpiece surface.
8 2nd set-up clearance Q204 (incremental value):
Coordinate in the tool axis at which no collision
between tool and workpiece (clamping devices) can
occur.
8 Dwell time at depth Q211: Time in seconds that the
tool remains at the hole bottom.
Example: NC blocks
10 L Z+100 R0 FMAX
11 CYCL DEF 200 DRILLING
Q200=2 ;SET-UP CLEARANCE
Q201=-15 ;DEPTH
Q206=250 ;FEED RATE FOR PLUNGING
Q202=5 ;PLUNGING DEPTH
Q210=0 ;DWELL TIME AT TOP
Q203=+20 ;SURFACE COORDINATE
Q204=100 ;2ND SET-UP CLEARANCE
Q211=0.1 ;DWELL TIME AT DEPTH
12 L X+30 Y+20 FMAX M3
13 CYCL CALL
14 L X+80 Y+50 FMAX M99
15 L Z+100 FMAX M2