Drilling multiple holes efficiently in CNC machining requires precise G-code programming. In this guide, we will show you how to write G-code to drill multiple holes with an example for beginners and professionals.
Step 1: Define Tool and Spindle
Start by selecting the correct tool and setting spindle speed using G-code commands:
G21 ; Set units to mm
G90 ; Absolute positioning
T1 M06 ; Select drill tool
S1000 M03 ; Spindle on clockwise at 1000 RPM
Step 2: Move to Starting Position
Use the G0 command to move the drill to the starting position safely:
G0 X10 Y10 ; Move to first hole position
Step 3: Drill Holes
Drill each hole using the G81 drilling cycle for simplicity:
G81 Z-5 R1 F100 ; Drill to depth -5mm, retract 1mm, feed 100 mm/min
X20 Y10 ; Drill second hole
X20 Y20 ; Drill third hole
X10 Y20 ; Drill fourth hole
G80 ; Cancel drilling cycle
Step 4: Return to Home Position
After completing the holes, move the tool safely away from the workpiece:
G0 Z10 ; Retract to safe height
G0 X0 Y0 ; Return to home
M05 ; Stop spindle
M30 ; End of program
By following these steps, you can efficiently write G-code to drill multiple holes, improve CNC machining productivity, and reduce errors.
G-code,CNC machining,drill holes,programming,G-code tutorial,CNC guide,drilling multiple holes,manufacturing,CNC programming example
