Example 3: TNC with a G72 Roughing Canned Cycle

Classic Control - Lathe Operator's Manual

The Online Interactive Operator's Manual is currently available in English only.

A PDF version of the Operator's Manual is available for download in multiple languages. Click the link below to view the Operator's Manual in your language. Click "Continue" to view the online version in English.

Get a translated PDF Download Continue

This example is TNC with a G72 roughing canned cycle. G72 is used instead of G71 because the roughing strokes in X are longer than the Z roughing strokes of a G71. It is therefore more efficient to use G72.

TNC G72 Roughing Canned Cycle

Setting 33 is FANUC.

% o30721 (TNC WITH A G72 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 X3.1 Z0 (Rapid to 1st position) ; M08 (Coolant on) ; (BEGIN CUTTING BLOCKS) ; G96 S200 (CSS on) ; G72 P1 Q2 U.01 W.005 D.08 F.012 (Begin G72) ; N1 G41 G00 Z-1.6 (P1 - TNC on) ; G01 X2. F0.01 (Begin toolpath) ; X1.4 Z-0.9 (Taper) ; X1. (Linear feed) ; Z-0.6 (Linear feed) ; G03 X0.8 Z-0.5 R0.1 (Feed CCW) ; G01 Z-0.1 (Linear feed) ; X0.7 Z0 (Chamfer, End of toolpath) ; N2 G00 G40 Z0.1 (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) ; %

Be aware: Many service and repair procedures should be done only by authorized personnel. The service technicians at your Haas Factory Outlet (HFO) have the training, experience, and are certified to do these tasks safely and correctly. You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes.

Danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not completely understand. Contact your Haas Factory Outlet (HFO) and schedule a service technician visit if you have any doubts about doing a procedure.

Feedback