CNC Turning

CNC turning of prototype parts

CNC turning has a key role to play in the production of metal, alloy and plastic prototype parts. It is also ideal for one-offs and small batches required by machine builders and manufacturers of low-volume, high-value products.

Compared with 3D printing, CNC (computer numerical controlled) turning is more accurate, while being quick and cost-effective. We quote a general tolerance of ±0.1mm for CNC turning but much tighter tolerances are normally achieved without any special measures being taken. Furthermore, customers’ requirements can usually be met for specific tolerances on critical dimensions.

Unlike parts produced using some 3D printing technologies, CNC turned parts benefit from isotropic material properties. This can be crucial for functional prototypes.

Note that we also have CNC milling and can therefore meet all of your CNC machining requirements.

What is CNC turning?

Material is clamped in the chuck or collet of the CNC lathe and then rotated at high speed. A program is run to manipulate cutting tools so they remove material from the exterior, drill and/or bore the centre, and cut external and/or internal threads. Flats or off centre holes can be added using a second operation on the mill. Being fully automatic, including tool changing, the CNC turning centres can run unattended.

Parts are often machined and parted-off in a single setup, but sometimes it is necessary to turn the workpiece around so it can be machined from both ends.