G81 Drill Canned Cycle (Group 09)

Next Generation Control Mill Operator's Manual

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*E - Chip-clean RPM (Spindle reverses to remove chips after each cycle)
F - Feedrate
*L - Number of holes to drill if G91 (Incremental Mode) is used
*R - Position of the R plane (position above the part)
*X - X-Axis motion command
*Y - Y-Axis motion command
*Z - Position of the Z Axis at the bottom of hole

* indicates optional

caution: Unless you specify otherwise, this canned cycle uses the most recently commanded spindle direction (M03, M04, or M05). If the program did not specify a spindle direction before it commands this canned cycle, the default is M03 (clockwise). If you command M05, the canned cycle will run as a “no-spin” cycle. This lets you run applications with self-driven tools, but it can also cause a crash. Be sure of the spindle direction command when you use this canned cycle.

G81 Drill Canned Cycle

This is a program to drill through an aluminum plate:

% O60811 (G81 DRILLING CANNED CYCLE) ; (G54 X0 Y0 is at the top-left of part) ; (Z0 is on top of the part) ; (T1 is a .5 in drill) ; (BEGIN PREPARATION BLOCKS) ; T1 M06 (Select tool 1) ; G00 G90 G40 G49 G54 (Safe startup) ; G00 G54 X2. Y-2. (Rapid to 1st position) ; S1000 M03 (Spindle on CW) ; G43 H01 Z0.1 (Activate tool offset 1) ; M08 (Coolant on) ; (BEGIN CUTTING BLOCKS) ; G81 Z-0.720 R0.1 F15.(Begin G81) ; (Drill 1st hole at current X Y location) ; X2. Y-4. (2nd hole) ; X4. Y-4. (3rd hole) ; X4. Y-2. (4th hole) ; (BEGIN COMPLETION BLOCKS) ; G00 G90 Z1. M09 (Rapid retract,coolant off) ; G53 G49 Z0 M05 (Z home, spindle off) ; G53 Y0 (Y home) ; M30 (End program) ; %
*C - C-Axis absolute motion command (optional)
F - Feed Rate
*L - Number of repeats
R - Position of the R plane
*W - Z-axis incremental distance
*X - X-axis motion command
*Y - Y-axis absolute motion command
*Z - Position of bottom of hole

* indicated optional

Also see G241 for radial drilling and G195/G196 for radial tapping with live tooling.

G81 Drill Canned Cycle: [1] Rapid, [2] Feed, [3] Start or end of stroke, [4] Starting plane, [R] R plane, [Z] Position at the bottom of the hole.

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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