G73 is a canned drilling cycle for high-speed peck drilling. The drill cuts Q per peck, with a fixed 1.0 mm retract between pecks.

Syntax

G73 X Y Z R Q K F

Modal

Yes – Group 1

Cancel with

G80

WARNING

Cancel the previous canned cycle with G80 before starting a new one.

Parameters

Word	Meaning
X Y Z A B	Axes to move and the target position, in the current machine units.
R	Z retract position above the workpiece. Z returns here after the cycle when used with G99.
Q (required)	Peck depth – the incremental cut per peck. Must be positive and non-zero.
K (optional)	Number of times to repeat the cycle at the same location.
F	Feed rate for the drilling moves.

Example

N10 G99 G73 X10 Y10 Z-8 R2 Q1 K2 F100
N20 X20
N30 X30
N40 G80

Code	Result
G99 G73 X10 Y10 Z-8 R2 Q1 K2 F100	Moves to X10 Y10, sets the retract plane to Z2 and peck-drills to Z−8 in 1 mm pecks at 100 mm/min. K2 repeats the cycle once more at the same position.
X20	Moves to X20 and drills another hole with the same parameters.
X30	Moves to X30 and drills another hole with the same parameters.
G80	Cancels the canned cycle.

INFORMATION

Units are inches or millimetres, depending on the machine setup and whether G20 or G21 is active.