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What does CNC milling do

CNC milling is the process of using a rotating tool to remove material by pushing the tool into the workpiece. This can be achieved by changing the orientation, head velocity and pressure in one or more axes. CNC milling covers a wide variety of operations and machines, from small individual parts to large, heavy group milling operations. This is one of the most common processes for machining custom parts to precise tolerances.

CNC Milling

As a general rule, in an industry where competition is high and time is of the essence, it is best to leave manual programming for simple jobs and leave it to CAM systems for speed on complex jobs. However, manual programming is the best option for very high-volume jobs, and is an absolute must for applications that require CNC programs to be as optimized and accurate as possible.

A variety of machine tools are available. The original class of machine tools used for CNC milling operations were CNC milling machines (commonly known as CNC mills). With the advent of computerized numerical control in the late 20th century, CNC milling machines evolved into machining centers: CNC milling machines are machines equipped with an automatic tool changer, tool magazine or turntable, CNC functions, cooling systems and housings. CNC milling centers are generally divided into vertical machining centers or horizontal machining centers.

The combination of CNC milling and turning environments started with lathe power tools and occasional turning operations with CNC milling machines. This has given rise to a new class of machines, called multitasking machines, specifically designed to facilitate CNC milling and turning within the same work envelope.