CNC milling or manual milling is a machining process for machining prismatic parts. A milling cutter with a rotating cylindrical cutter head and a number of flutes often is referred to as end mills or end mills, which can move along different axes for machining slots, grooves, outer contours, etc.
Machine tools for milling are called milling machines, and CNC milling machines are usually index-controlled machining centers. Precision machined end bell is a CNC milling machine. Milling includes manual milling and CNC milling. Milling takes place in the machining shop.