A CNC bending machine is a type of machine tool that uses computer numerical control (CNC) to manipulate and bend metal sheets or tubes. It typically consists of a base, a press brake with a flat surface or die, and a back gauge that positions the workpiece. The CNC controls the movement of the press brake, the back gauge, and any other accessories, such as automatic tool changers or robots, to achieve precise bends and angles.

CNC bending machines are widely used in industries that require precise metal bending, such as automotive, aerospace, and construction. They can handle a variety of materials, including aluminium, steel, copper, and brass, and can perform a range of bending operations, such as air bending, bottoming, and coining. CNC bending machines offer several advantages over traditional bending methods, including faster production times, greater precision and repeatability, and the ability to handle complex geometries.