CNC Machining and What it's Used For
CNC Machines are high-precision electromechanical devices that can manipulate cutting tools around 3 or 5 axis through a computer program to make complex parts. CNC Machines can be controlled by either writing the g-code for the machines, using a CAM (computer-aided manufacturing) software that automatically writes the g-code from a 3D computer model or through conversational programming which is done at the machine.
Like most machining processes, CNC machining is a subtractive process meaning that it removes material to make the desired part, unlike additive processes such as 3D printing. The machines remove material from blocks of material (called blanks) by drilling, lathes, and milling and can change tooling and bits during machining.
CNC machines can be used on a variety of materials from ceramics to polymers but are more commonly used on wood and metals such as aluminum, steel, and titanium. These machines are much quicker and more precise than manual machining methods with tolerances up to ±0.001mm! Which is far less than the width of a human hair, or about 27500 times smaller than the width of your average banana – if you’re interested…
Common CNC Machine types:
3 Axis Machines:
Multi-Axis Machines:
Mill Turning
Continuous 5 Axis
Indexed 3+2 Axis
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