CNC KNOWLEDGE

CNC Fanuc G73 Pattern Repeating Cycle CNC.... HD KNOWLEDGE.COM..EXAMPLE 3

This cycle is used in predefined shape like forging , casting

04534
N10  G90 G50 S1200 ;
N20  G99 F0.25 ;
N30  M03 G96 S200 ;
N40  M06 T01 01 ;
N50  M08 ;
N60  G28 U0 W0 ;
N70  G00 X20 Z2 ;
N80  G73 U4 W2 R3 ;
N90  G73 P100 Q150 U0.5 W0.1 ;
N100 G00 X0 ;
N110 G01 X30 Z-10 ;
N120 G01 Z-18 ;
N130 G02 X30 Z-26 CR=8 ;
N140 G01 Z-46 ;
N150 G01 X50 ;
N160 G01 Z-54 ;
N170 G03 X50 Z-64 CR=10 ;
N180 G01 Z-74 ;
N190 G70 P100 Q150 F0.1 ;
N170 G28 U0 W0 ;
N180 M05 M09 M30 ; More examples..........!!!!

DISCRIPTION OF MAINT PROGRAM :-
04534- Name of main program
N10- Absolute cordinate system , maximum spindle speed command , speed 1200
N20- Feed rate per revolution is 0.25 (F0.25)
N30- Spindle on clockwise , constant surface speed command, speed is 200.
N40- Tool change command , select tool no. 1
N50- Coolent ON
N60- Referance point command where X0 and Z0
N70- Rapid command , where X20 and Z2
N80- Pattern repeating cycle command ,U4 is amount of material cut in X axis and W2 is amount of material cut in Z axis AND R3 is repeat of cut
N90- Pattern repeating cycle command , actual operation start from block no. 100 and actual operation end at block no. 180, finishing allowance in X axis is 0.5 and finshing allowance in Z axis is 0.1

N100- Rapid action command , where X0 and Z2

N110- Linear interpolation command where X30 and Z-10

N120- Linear interpolation command where X30 and Z-18

N130- Circular interpolation clockwise , where X 30 , Z-26 and CR=8

N140- Linear interpolation command where X30 and Z-46

N150- Linear interpolation command where X50 and Z-46

N160- Linear interpolation command where X50 and Z-54

N170- Circular interpolation counter clockwise , where X 50 , Z-64 and CR=10

N180- Linear interpolation command where X50 and Z-74

N190- Finish machining cycle , actual operation start from block no. 100 and actual operation end atblock no. 180 , feed rate for finishing cut 0.1

N200- Referance point command where X0 and Z0