Numerical control
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In machining, numerical control, also called computer numerical control (CNC), is the automated control of tools by means of a computer. It is used to operate tools such as drills, lathes, mills, grinders, routers and 3D printers. CNC transforms a piece of material into a specified shape by following coded programmed instructions and without a manual operator directly controlling the machining operation.
A CNC machine that operates on wood
CNC machines typically use some kind of coolant, typically a water-miscible oil, to keep the tool and parts from getting hot.
Sinker EDM. Electrolyte solution saturates the workpiece, and voltage is applied between the sinker, top, and workpiece, bottom.
Waterjet cutting machine
Machining
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Machining is a manufacturing process where a desired shape or part is created using the controlled removal of material, most often metal, from a larger piece of raw material by cutting. Machining is a form of subtractive manufacturing, which utilizes machine tools, in contrast to additive manufacturing, which uses controlled addition of material.
CNC machine pouring water to keep the tool and parts from getting hot
A "numerical controlled machining cell machinist" monitors a B-1B aircraft part being manufactured.
A Cincinnati shaper with boring bar attached to the clapper box.
Making a shipboard manhole cover in the machine shop of the aircraft carrier USS John C. Stennis.