Tapping machines can typically be set to tap or mill, but what are these functions and how do they differ?
Tapping
Tapping is a process in which threads are cut into a hole in soft materials such as brass and aluminium. It is designed for high-volume production and produces identical holes every time, with a high level of accuracy.
Milling
Milling uses a rotating tool to cut threads into a pre-drilled hole. Using CNC programming, it is possible to create different-sized threads and pitches using the same tool. For this reason, it offers increased versatility on bespoke projects and is the tool of choice for hard materials such as titanium and stainless steel.
Choosing between tapping and milling
To decide whether you need to tap or mill your thread hole, you should consider the number of pieces you need to produce. Generally, the greater the production volume, the more likely you are to opt for a tapping machine from a company such as cotswold-machinery-sales.co.uk/roscamat-tapping-machines.
Next, consider the type of material you will be working with. If you are working with a very hard material, such as titanium, a milling machine may be better suited to your needs. This is also the case if you are creating a bespoke product or producing a small run.
In conclusion
Both tapping and milling are valid ways of creating a thread in a pre-drilled hole. Tapping is better suited to soft materials and high production volumes, while milling is better suited to low-volume production and harder materials.
