G243 Radial Normal Peck Drilling Canned Cycle (Group 09)

Classic Control - Lathe Operator's Manual

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C - C-Axis absolute motion command
F - Feed Rate
*I - Size of first cutting depth
*J - Amount to reduce cutting depth each pass
*K - Minimum depth of cut
*P - The dwell time at the bottom of the hole
*Q - The cut-in value, always incremental
R - Position of the R plane (Diameter)
*X - Position of bottom of hole (Diameter)
*Y - Y-axis absolute motion command
*Z - Z-axis absolute motion command

* indicates optional

G243 Radial Normal Peck Drilling Canned Cycle: [1] Rapid, [2] Feed, [3] Start or end of stroke, [4] R plane, [#52] Setting 52, [5] R plane, [6]  Part surface, [#22] Setting 22, [7] Dwell at the bottom of the hole, [8] Centerline.

Programming Notes: If I, J, and K are specified, a different operating mode is selected.The first pass will cut in the value of I, each succeeding cut will be reduced by amount J, and the minimum cutting depth is K. Do not use a Q value when programming with I,J, and K.

Setting 52 changes the way G243 works when it returns to the R plane. Usually the R plane is set well outside the cut to insure that the chip clearing motion allows the chips to clear the hole. However, this is wasted motion when first drilling through this empty space. If Setting 52 is set to the distance required to clear chips, the R plane can be put much closer to the part being drilled. When the clear move to R occurs, the Z will be moved past R by this value in setting 52. Setting 22 is the amount to feed in X to get back the same point at which the retraction occurred.

% o62431 (G243 RADIAL PECK DRILL CYCLE) ; (G54 X0 Y0 is at the center of rotation) ; (Z0 is on the face of the part) ; (T1 is a drill) ; (BEGIN PREPARATION BLOCKS) ; T101 (Select tool and offset 1) ; G00 G18 G20 G40 G80 G99 (Safe startup) ; G98 (Feed per min) ; M154 (Engage C Axis) ; G00 G54 X5. Y0.125 Z-1.3 (Rapid to 1st position) ; P1500 M133 (Live tool CW at 1500 RPM) ; M08 (Coolant on) ; G243 X2.1 Y0.125 Z-1.3 C35. R4. Q0.25 F20. ; (Drill to X2.1) ; X1.85 Y-0.255 Z-0.865 C-75. Q0.25 (Next position); G00 Z1. (Rapid retract) ; M135 (Live tool off) ; G00 G53 X0 M09(X home, coolant off) ; G53 Z0 ; M00 ; (G243 - RADIAL WITH I,J,K PECK DRILLING) ; M154 (Engage C Axis) ; G00 G54 X5. Y0.125 Z-1.3 (Rapid to 1st position) ; P1500 M133 (Live tool CW - 1500 RPM) ; M08 (Coolant on) ; G243 X2.1 Y0.125 Z-1.3 I0.25 J0.05 K0.1 C35. R4. F5. ; (Drill to X2.1) ; X1.85 Y-0.255 Z-0.865 I0.25 J0.05 K0.1 C-75. ; (next position) ; (BEGIN COMPLETION BLOCKS) ; M155 (Disengage C Axis) ; M135 (Turn live tool off) ; G00 G53 X0 Y0 M09 (X & Y home, coolant off) ; G53 Z0 (Z home) ; 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.

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