O.D. Thread Milling

Classic Control - Mill Operator's Manual

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O.D. Thread Milling Example, 2.0 diameter post x 16 TPI: [1] Tool Path [2] Rapid Positioning, Turn on and off cutter compensation, [3] Start Position, [4] Arc with Z.

% O60024 (G02 G03 THREAD MILL 2.0-16 UNC) ; (G54 X0 Y0 is at the center of the post) ; (Z0 is on top of the opost) ; (T1 is a .5 in dia thread mill) ; (BEGIN PREPARATION BLOCKS) ; T1 M06 (Select tool 1) ; G00 G90 G40 G49 G54 (Safe startup) ; G00 G54 X0 Y2.4 (Rapid to 1st position) ; S1000 M03 (Spindle on CW) ; G43 H01 Z0.1 (Activate tool offset 1) ; M08 (Coolant on) ; (BEGIN CUTTING BLOCKS) ; G00 Z-1. (Rapids to Z-1.) ; G01 G41 D01 X-0.5 Y1.4 F20. (Linear move) ; (Cutter comp on) ; G03 X0 Y0.962 R0.5 F25. (Arc into thread) ; G02 J-0.962 Z-1.0625 (Cut threads while lowering Z) ; G03 X0.5 Y1.4 R0.5 (Arc out of thread) ; G01 G40 X0 Y2.4 F20. (Linear move) ; (Cutter comp off) ; (BEGIN COMPLETION BLOCKS) ; G00 Z0.1 M09 (Rapid retract, Coolant off) ; G53 G49 Z0 M05 (Z home, Spindle off) ; G53 Y0 (Y home) ; M30 (End program) ; %
note: A cutter compensation move can consist of any X or Y move from any position as long as the move is greater than the amount being compensated.

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.