HEIDENHAIN TNC 320 (340 55x-04) Cycle programming - Manual (Page 122)

122 Fixed Cycles: Tapping / Thread Milling
4.1
1
Pr
ogr
amming Examples
4.11 Programming Examples
Example: Thread milling
The drill hole coordinates are stored in the point
table TAB1.PNT and are called by the TNC with
CYCL CALL PAT
.
The tool radii are selected so that all work steps
can be seen in the test graphics.
Program sequence
„ Centering
„ Drilling
„ Tapping
0 BEGIN PGM 1 MM
1 BLK FORM 0.1 Z X+0 Y+0 Z-20 Definition of workpiece blank
2 BLK FORM 0.2 X+100 Y+100 Y+0
3 TOOL CALL 1 Z S5000 Tool call of centering drill
4 L Z+10 R0 F5000 Move tool to clearance height (enter a value for F)
The TNC positions to the clearance height after every cycle
5 SEL PATTERN “TAB1” Defining point tables
6 CYCL DEF 200 DRILLING Cycle definition: CENTERING
Q200=2 ;SETUP CLEARANCE
Q201=-2 ;DEPTH
Q206=150 ;FEED RATE FOR PLNGN
Q202=2 ;PLUNGING DEPTH
Q210=0 ;DWELL TIME AT TOP
Q203=+0 ;SURFACE COORDINATE 0 must be entered here, effective as defined in point table
Q204=0 ;2ND SET-UP CLEARANCE 0 must be entered here, effective as defined in point table
Q211=0.2 ;DWELL TIME AT DEPTH
X
Y
20
10
100
100
10
90
90 80
30
55
40
65
M6