Turning is a mechanical production, which expects the shavings removal by a combination of the piece movements (rotating motion) and of the shaping machine (rectilinear motion), whereas the sharping machine removes the material in excess.
For much time the manufacturing has been made manually by expert turners which accomplished, thanks to their ability, the necessary movements for the piece manufacturing, working with traditional lathes.
By the time, the technology has permitted the introduction of computer numerical control shaping machines, with the introduction of CNC lathe.
Differently from a traditional shaping machine, a computer numerical control machinery creates automatisms, which replace the manual handling of the axis with higher precision and a better performance of the piece manufacturing, thanks to the exact position kept by the work axis.