Facing Cycle For Fanuc Control G72 or Transverse Roughing Cycle

Facing Cycle in Fanuc Control G72 or Transverse Roughing Cycle

Programming format:-

G72 W__ R__ ;

G72 P__ @__ U__ W__ F__ S___ T__ ;

W       =        Cutting Depth

R        =        Escape Distance

P        =        Head Sequence No. For Finishing Shape

Q       =        End Sequence No. For Finishing Shape

U       =        Finishing Allowance and Direction In X Axis Direction (Diametric Vale)

W       =        Finishing Allowance and Direction in Z Axis Direction

F        =        Feed Rate

S        =        Cutting Speed

T        =        Tool Number

Note:-

         If F and S commands exist in blocks defined by p and Q, they will be ignored during roughing cycle because they are considered for finishing cycle.

Sample program:-

N01     G00 G96 G98 ;

N02     G28 U0 W0 ;

N03     T0101

N04     X176. Z2.  ;

N05     G72 W7. R1.

N06     G72 P06 Q13 U4. W2. F100 S100 M3

N07     G00 Z-80. S150 ;

N08     G01 X120. W8. F100;

N09     W10.;

N10     X82. W11. ;

N11     W20. ;

N12     X35. W21. ;

N13     W12. ;

N14     G70 P06 Q13 ;

N15     G28 U0 W0 M5 ;

N16     M30;