Specifications

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CONCISE GUIDE FANUC 138
8.0 BAR MACHINING
We have included in this chapter some examples of programs that use loaders, push bar conveyors, and
an example using a pull-bar conveyor in a cycle for machine with and without back spindle.
8.1 EXAMPLE OF MACHINE TOOL LOADER USE WITH BACK SPINDLE
The program example below regards a bar loader connected to a machine with a back spindle, and it is
valid for LNS loaders with magazine of the type QUICK LOAD, SPRINT and IEMCA
GOTO 200 (UNCONDITIONED SKIP TO BLOCK N200)
N10 T101 (TOOL FOR BAR REFERENCE)
G54
G97 M3 S50
M10 (ENABLE SPINDLE ROTATION WITH JAWS OPEN)
G0 X0 Z5
Z-47
M69 (OPEN SELF CENTRING CHUCK / COLLET CHUCK)
G4 U1 (PAUSE TIME FOR SELF-CENTRING CHUCK/COLLET CHUCK OPENING)
G1 Z0.2 F10
M68 (CLOSE SELF-CENTRING CHUCK/COLLET CHUCK)
G4 U1
M11 (DISABLE SPINDLE ROTATION WITH JAWS OPEN)
G0 X200 Z100
T202 (TOOL FOR MACHINING SPINDLE 1 SIDE)
G54
MACHINING COMPLETE SPINDLE 1 SIDE
G0 B0 (REPOSITIONING BACK SPINDLE FOR WORKPIECE CHANGE-OVER)
G65 P9100 ……. (WORKPIECE CHANGE-OVER WITH PARTING OFF MACRO )
G0 B0 (REPOSITIONING BACK SPINDLE FOR WORKPIECE CHANGE-OVER)
T222 (TOOL FOR MACHINING SPINDLE 2 SIDE)
G55
MACHINING COMPLETE SPINDLE 2 SIDE AND WORKPIECE UNLOADING
M62 (PIECE COUNTER INCREMENT)
M1 (OPTIONAL STOP )
N200 IF[104EQ0]GOTO10 (FINISHED BAR CONTINUE, NOT FINISHED SKIP TO N10)