CNC milling services are part of the precision engineering capabilities we offer at M-CNC. As CNC machines can precision engineer complex parts to unparalleled levels of accuracy, CNC milling services are used by many prestigious industries.
In this blog, we explore what exactly CNC milling is, how it works, and the benefits it offers.
What is CNC milling?
CNC milling is a type of CNC machining. A CNC machine (Computer Numerical Control machine) creates precision engineered components using subtractive machining technology. It does this by removing material from a solid workpiece.
In CNC milling, the cutting tool in the machine rotates in the spindle – this cuts the material away from the billet. An in-demand form of CNC machining, CNC milling can accurately produce highly complex parts to both large and small volumes.
How does CNC milling work?
1. CAD drawing
The process begins with the development of a CAD drawing using Computer Aided Design (CAD) software. This will create a 3D design of the part, which is in turn used into a series of commands the CNC machine can follow to create the desired part.
2. Shaping the workpiece
CNC milling machines use subtractive machining technology to follow the steps of the CAD file. The machine removes material from a blank, original workpiece with a rotating cylindrical tool – this is called a milling cutter.
3. Multiple axes
CNC milling machines have multiple axes, meaning they can create intricate parts to a high level of accuracy. Usually, the part being formed stays clamped to the bed whilst the cutting tool moves along these multiple axes.
The different axis types used in CNC milling are:
- X – Left to right as you face the machine
- Y – Front to back as you face the machine
- Z – Spindle movement up and down as you face the machine.
- C – Rotational axis on the X
- D – Rotational axis on the Z or Y axis (dependant on the machine).
What are the benefits of CNC milling?
Cost effective
CNC milling is a far less labour-intensive manufacturing process than many others. Whilst skilled machinists are still needed to ensure CNC machining runs smoothly, the high level of automation involved saves on costs – without compromising on output or accuracy.
High quality parts
The negation of human error and automation of CNC milling ensures parts are manufactured to an incredibly precise degree. The computer-led design and machining process enables us to accurately manufacture even the most complex parts down to the last micron.
Uniformity
CNC milling machines create parts by following exactly the same steps outlined by the Computer-Aided 3D design for the part. This means every single part is produced to the same level of accuracy.
Production capabilities
The automation involved in CNC milling also means CNC machines are capable of high levels of production. You can also trust that these parts will be consistent, meeting the same levels of quality.
