HEIDENHAIN TNC 360 ISO Programming - Manual (Page 184)

8-31
8 Cycles
TNC 360
8.4 Cycles for Coordinate Transformations
X
Y
Z
25
30
40
20
60
15
1
2
30
25
20
15
Y
X
Z
Example: Datum shift
A machining sequence in the form of a
subprogram is to be executed twice:
a) once, referenced to the specified datum 1
X+0/Y+0 and
b) a second time, referenced to the shifted
datum
2 X+40/Y+60.
Cycle in a part program
%S840I G71 * ............................................................ Begin program
N10 G30 G17 X+0 Y+0 Z–20 * ................................... Define workpiece blank
N20 G31 X+100 Y+100 Z+0 *
N30 G99 T1 L+0 R+4 * .............................................. Tool definition
N40 T1 G17 S1500 * .................................................. Tool call
N50 G00 G40 G90 Z+100 * ........................................ Retract the tool
N60 L1,0 * .................................................................. Execute sequence 1 without datum shift
N70 G54 X+40 Y+60 *
N80 L1,0 * .................................................................. Execute sequence 2 with datum shift
N90 G54 X+0 Y+0 * ................................................... Cancellation of datum shift
N100 Z+100 M02 *
N110 G98 L1 *
N230 G98 L0 *
N9999 %S840I G71 *
.
.
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