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What's CNC machining?
CNC (computer numerical control) machining is a process that uses code, often generated using computer software, to control the movement of cutting tools to manufacture parts through material removal. CNC machining software, often referred to as CAM software, manages movements of the machinery through programming which eliminates the need for manual operation.
Types of CNC machining
ROUGHING
The first step in many CNC machining operations is to remove as much metal material as possible. See how Autodesk's Adaptive Clearing helps.
2-AXIS VS 3-AXIS MILLING
Learn how 2-axis milling compares to 3-axis and the advantages that 3-axis CNC machining has to offer.
TURNING
Watch the production of custom parts using a lathe, called turning.
CNC machining milling styles
CNC machines are broadly classified by the number of axes involved and how they move.
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2.5-AXIS
2.5-axis machining creates prismatic features at distinct Z levels, moving the tool in only two axes simulatenously.
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3-AXIS
3-axis machining uses all three axes simultaneously to create complex and non-planar surfaces.
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4-AXIS
4-axis machining uses all three axes simultaneously to create complex and non-planar surfaces.
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5-AXIS
5-axis machining uses a combination of three linear axes and two rotational axes to efficiently machine a broad scope of geometry.
Types of CNC machines
CNC machine design will vary greatly. On some machines, the part will move or rotate while the spindle and tool remain stationary. In other machines, the part is stationary while the spindle moves. Some machines are a combination of both these designs.
To learn more about various CNC machined parts, you can read our Types of CNC eBook. This eBook also includes descriptions of CNC machine components & programming and non-milling machines.
Featured CNC machining software
Autodesk has software for CNC machining and computer-aided manufacturing (CAM).
How CNC machining is used
DIRECT AERO SYSTEMS
Aerospace applications
Direct Aero Systems shares how they use Fusion 360 and HSM to program DMG Mori machines to produce high quality aerospace parts quickly, without sacrificing quality.
D&D ENGINEERING
Industrial machinery
D&D Engineering services the food processing industry. To minimise machine downtime, D&D uses FeatureCAM to produce replacement parts with a fast turnaround time.
PRECISION MOULD & MACHINING
Mould manufacturing
Precision Mould & Machining uses PowerMill to program and CNC machine complex moulds for the automotive, aerospace, medical and defence applications.
Resources for CNC machining
Get started with CNC machining with these tutorials, guides, tips and tricks.
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CNC Handbook (US site)
This PDF is a great resource for all CNC machinists, from beginners to experts.
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Watch this introductory video about CNC machining processes to learn about milling, turning, routing and more.
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Learn about the core component of every CNC program – G-code.
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Access resources and learning content for FeatureCAM, PowerMill and PowerInspect through the Manufacturing Hub.
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What's CAM? (US site)
Read this article for a complete introduction to CNC programming using computer-aided manufactuing (CAM).
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Watch tutorials and videos on how to program with Autodesk FeatureCAM and PowerMill.