CNC milling is the backbone of modern manufacturing. Whether you’re producing aerospace brackets, glass machinery frames, or robotic arm bases, CNC milling offers unmatched precision and repeatability. At GWH, we specialise in large-scale, high-precision CNC milling services designed for demanding sectors.
What is CNC Milling?
CNC (Computer Numerical Control) milling uses computerised controls to operate cutting tools that remove material from a workpiece. Unlike manual methods, CNC milling delivers incredible accuracy, consistency, and efficiency, key attributes when working with complex materials and strict tolerances.
The CNC Milling Process: A Step-by-Step Overview
Step 1: CAD Design
The process starts with a 2D or 3D model, typically developed in CAD software like SolidWorks. This model defines the shape, dimensions, and features of the final component. At Glassworks Hounsell, we operate three dedicated CAD/CAM stations to support collaborative design.
Step 2: CAM Programming
Next, the design is converted into a CNC programme using CAM (Computer-Aided Manufacturing) software such as Fusion 360. This creates the toolpaths the machine will follow.
Step 3: Machine Setup
Our machinists mount the material, often titanium, Super Duplex, or HIP’ed aluminium, onto one of our large Vertical Machining Centres (VMCs). Our WELE 316 VMC, for example, supports workpieces up to 3 metres by 1.5 metres.
Step 4: Milling Operation
The CNC machine performs a series of programmed operations, including facing, contouring, drilling, and pocketing, to shape the component. Precision is maintained even at scale, with our VMCs offering 90° head adjustment in 5° increments.
Step 5: Inspection and Quality Assurance
Every component undergoes thorough quality inspection. We utilise CMMs from Mitutoyo, traditional gauges, and can employ Faro arms for 3D scanning when necessary. Inspection is handled by our in-house SHEQ manager with over 25 years’ experience.
Why CNC Milling Services Are Indispensable
- Complex Geometries: CNC milling allows for features such as undercuts, deep cavities, and fine detailing.
- High Material Versatility: We work with titanium, Inconel, stainless steels, and exotic alloys that many shops avoid.
- Repeatability: CNC ensures that every unit matches the prototype, ideal for production runs.
- Speed: Automated milling reduces lead times, even for complex parts.
Real-World Application:
We recently worked with a medical tech innovator developing advanced radiographic equipment. They needed machined aluminium components with tolerances under 10 microns. Our CNC milling capability allowed them to meet compliance and safety standards, giving them the confidence to ramp up production.
When to Choose CNC Milling Services
If you require:
- High-accuracy components in challenging materials
- Large-format parts that maintain structural integrity
- Engineering input on manufacturability
- Traceable, ISO 9001-certified quality systems
Then CNC milling services from an experienced partner like GWH are essential.
Milling for Manufacturing Excellence
CNC milling isn’t just a manufacturing method, it’s a precision enabler. And in sectors like aerospace, medical, and advanced automation, it provides the reliability and repeatability that operations demand.
Need a reliable partner for your CNC milling requirements? Book a discovery call with GWH.
