HEIDENHAIN TNC 320 (340 55x-04) Cycle programming - Manual (Page 60)

60 Fixed Cycles: Drilling
3.2 CENTERING (Cy
c
le 240, DIN/ISO: G240)
Cycle parameters
U Setup clearance Q200 (incremental): Distance
between tool tip and workpiece surface. Enter a
positive value. Input range 0 to 99999.9999
U Select Depth/Diameter (0/1) Q343: Select
whether centering is based on the entered diameter
or depth. If the TNC is to center based on the
entered diameter, the point angle of the tool must
be defined in the T-ANGLE column of the tool table
TOOL.T.
0: Centering based on the entered depth
1: Centering based on the entered diameter
U Depth Q201 (incremental value): Distance between
workpiece surface and centering bottom (tip of
centering taper). Only effective if Q343=0 is defined.
Input range –99999.9999 to 99999.9999
U Diameter (algebraic sign) Q344: Centering
diameter. Only effective if Q343=1 is defined. Input
range –99999.9999 to 99999.9999
U Feed rate for plunging Q206: Traversing speed of
the tool during centering in mm/min. Input range:
0 to 99999.999; alternatively FAUTO, FU.
U Dwell time at depth Q211: Time in seconds that
the tool remains at the hole bottom. Input range:
0 to 3600.0000
U Workpiece surface coordinate Q203 (absolute):
Coordinate of the workpiece surface. Input range:
-99999.9999 to 99999.9999
U 2nd setup clearance Q204 (incremental):
Coordinate in the spindle axis at which no collision
between tool and workpiece (fixtures) can occur.
Input range: 0 to 99999.9999
Example: NC blocks
10 L Z+100 R0 FMAX
11 CYCL DEF 240 CENTERING
Q200=2 ;SETUP CLEARANCE
Q343=1 ;SELECT DEPTH/DIA.
Q201=+0 ;DEPTH
Q344=-9 ;DIAMETER
Q206=250 ;FEED RATE FOR PLNGNG
Q211=0.1 ;DWELL TIME AT DEPTH
Q203=+20 ;SURFACE COORDINATE
Q204=100 ;2ND SETUP CLEARANCE
12 L X+30 Y+20 R0 FMAX M3 M99
13 L X+80 Y+50 R0 FMAX M99
X
Z
Q200
Q344
Q206
Q210
Q203
Q204
Q201
30
X
Y
20
80
50