What does CNC stand for?
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CNC – what does it mean?
Closely linked to the topic of machining is the term CNC machining. What is meant by this term?
CNC – Computerised Numerical Control.
This abbreviation is very often used when machining various types of materials. Such work is performed by milling machines, lathes, wire cutting machines and other production machines. CNC machining makes it possible, among other things, to make large and complex series in a short time and to maintain a high precision of the parts made. Most machining companies have cnc machines in their facilities.
In summary, through CNC machining the whole process is very accurate and highly efficient. Complex parts are not a problem for this type of machining.
The manufacturing process (e.g. for rolling elements) consists of three parts.
- modelling in -CAD
- creation of the -CAM programme
- machining in -CNC
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Some of today’s machine tools combine all these 3 phases in their system. This allows the entire process to be carried out directly on the CNC machine tool.
The programmes and controllers supervise the operation of the machine, through contact with the operator (the person operating the machine) via a user panel. Nowadays, machine tools are very user-friendly for CNC operators. They very often come in a pleasing design for the machine tool operator. The software allows the loading, saving, advanced editing and execution of machining programmes (using G code or machine cycles built into the CNC machines by the manufacturers), the introduction of tool corrections, the shifting of coordinate systems, changes to machining parameters and the simulation of programmes.
CNC machines are constantly replacing conventional machines on the market, thanks to the advantages mentioned above. Their repeatability is made possible by the work of various types of sensors. This helps to avoid production errors, which are easy to occur on conventional machines.
In industry, lathes, milling machines and grinding machines are very often used. Their work usually involves the preparation of tools, the programme according to technological documentation and CNC machining. Programming consists in setting specific commands through the programme, which will determine the shape of the performed workpiece, and through the parameters it will be possible to achieve the target dimensions and surface roughness.
