How do CNC milling machines work?

Understanding the Function of CNC Milling Machines

CNC milling machines operate through a concise four-step procedure:

Step 1: CAD Model Creation

Machinists employ design software like Autodesk Fusion 360 to generate a CAD model for a

specific component.

Step 2: CAD Model Conversion for CNC Machine

The CAD model is subsequently imported into a CAM (computer-aided manufacturing) system,

where it undergoes conversion into digital instructions, known as G-code. G-code serves as a

set of commands that instruct the CNC machine on movement and velocity, enabling the

production of the designated component.

Step 3: CNC Milling Machine Setup

The CNC milling machine setup begins by affixing the workpiece or material block to the machine

bed, ensuring precise alignment through metrology tools or touch probes. The machine spindle is

installed, and all essential configurations are executed.

Step 4: Commencement of Milling Process

Upon loading the program, the CNC milling process is initiated. Specialized cutting tools rotate at

high speeds or specific revolutions per minute, systematically removing material from the

workpiece until it accurately replicates the desired component.