Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Step-by-Step Guide to Running a CNC Machine

1.Understand the Design and Prepare Materials/Tools

Review the blueprint or CAD file (e.g., .DXF) for dimensions, tolerances, and geometries. Select appropriate raw material blanks (ensure they're flat and oversized for stock). Choose sharp, undamaged tools based on the job—consider flute count, diameter, length, and material compatibility (e.g., carbide end mills for metals).

2.Power On and Home the Machine

Turn on the master electrical disconnect switch, then the operational power button on the control panel. The machine will initialize and home its axes (move to reference positions). Allow components like the spindle and ballscrews to warm up as per manufacturer guidelines.

3.Load Tools and Set Offsets

Insert tools into the spindle or tool carousel in the order specified by your program. Tighten to the recommended torque. For each tool, jog it to the workpiece surface and set the Tool Length Offset (TLO) for Z-axis, and input XY offsets into the tool library. Perform a trial cut if needed to calibrate.

4.Secure the Workpiece

Clean the table surface, then clamp or vise the material securely using fixtures. Align it precisely and verify immobility with a dial indicator to avoid shifts during operation.

5.Load the CNC Program (G-Code)

Generate or obtain the G-code from CAM software (.NC, .TAP, or similar files). Transfer it via USB, Ethernet, or directly into the controller. Verify the file name and path.

6.Set Machine Zero (Work Coordinates)

Define the origin by touching off reference points on the workpiece or fixture. This aligns the machine's axes with your part's datum.

7.Perform a Dry Run

Run the program in air (about 2 inches above the part) at rapid speeds without cutting. Watch for collisions, incorrect paths, or errors. Use simulation software if available for virtual verification.

8.Execute the Program

Start the actual run with close monitoring. Match feed rates and spindle speeds to the program and machine limits. Stay attentive—do not leave the machine unattended. Pause or stop if alarms trigger.

9.Inspect and Adjust

During or after runs, measure the part for accuracy. Adjust offsets for tool wear or deflection if features are off (e.g., shorten TLO for deeper cuts). Repeat dry runs as needed.

10.Finish and Shutdown

Power off the machine, remove the workpiece carefully, and deburr or finish the part (e.g., sanding edges). Clean chips/debris with compressed air, lubricate rails, and vacuum coolant areas. Store tools and leave the area tidy.