What does CNC stand for in machining?

CNC stands for Computer Numerical Control. This term is fundamental to the field of machining as it signifies the use of computer systems to automate the control of machine tools. CNC machines utilize computer programming to precisely control the movement of tools and the operation of machinery, which significantly enhances the accuracy, efficiency, and consistency of the manufacturing process.

In CNC, the "computer" refers to the software that interprets design specifications and generates instructions for the machine. "Numerical Control" pertains to the method of controlling machine tools through numerical input, allowing for a high degree of precision in the machining of parts from CAD (Computer-Aided Design) models. This technology contrasts with manual machining, where operators control the machines directly, which may introduce variability and reduce operational efficiency.

Understanding this definition is crucial for anyone in the machining field as it highlights the advancement from traditional machining techniques to more modern, automated processes that are essential for high-production environments and complex part geometries.