Example 4: TNC with G73 Roughing Canned Cycle

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This example is TNC with a G73 roughing canned cycle. G73 is best used when you want to remove a consistent amount of material in both the X and Z axes.

TNC G73 Roughing Canned Cycle

Setting 33 is FANUC

% o30731 (TNC WITH A G73 ROUGHING CYCLE) ; (G54 X0 is at the center of rotation) ; (Z0 is on the face of the part) ; (T1 is an OD cutting tool) ; (BEGIN PREPARATION BLOCKS) ; T101 (Select tool and offset 1) ; G00 G18 G20 G40 G80 G99 (Safe startup) ; G50 S1000 (Limit spindle to 1000 RPM) ; G97 S500 M03 (CSS off, Spindle on CW) ; G00 G54 X3.0 Z0.1 (Rapid to 1st position) ; M08 (Coolant on) ; (BEGIN CUTTING BLOCKS) ; G96 S200 (CSS on) ; G73 P1 Q2 U.01 W.005 I0.3 K0.15 D3 F.012 (Begin G73) ; N1 G42 G00 X0.6 (P1- TNC on) ; G01 Z0 F0.01 (Begin toolpath) ; X0.8 Z-0.1 F0.005 (Chamfer) ; Z-0.5 (Linear feed) ; G02 X1.0 Z-0.6 I0.1 (Feed CW) ; G01 Z-0.9 (Linear feed) ; X1.4 (Linear feed) ; X2.0 Z-1.6 (Taper) ; G01 X3. (End of toolpath) ; N2 G00 G40 X4. (Q2 - TNC off) ; (BEGIN COMPLETION BLOCKS) ; G97 S500 (CSS off) ; G53 X0 M09 (X home, coolant off) ; G53 Z0 M05 (Z home, spindle off) ; M30 (End program) ; %

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