what are the main component and purpose of CNC?  i need your help to answer my question above.   thanks, fadzil

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giorgiana1976 | College Teacher | (Level 3) Valedictorian

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The purpose of Computer Numerical Control is to enhance conventional machining processes by bringing the following advantages: increase of productivity; manufacture complex shapes; simplification of tooling and work holding; reduction of lead time, accuracy of work done.

CNC machine tools comprise the following main components:

- machine tools whose tables are controlled in X and Y axes and spindles controlled in Z axis.

- drive systems: drive motors, leading ball-screws and amplifier circuits.

- machine control units which read and decode part program instructions, generate axis motions commands, receive feedback signals regarding the position and the speed of each driven axis, etc.

- part programs that are a series of lines comprising the instructions needed to machine the part.

- program input devices which help to input the part program within CNC control.

- feedback systems that measure the position of cutting tool at each moment by mean of transducers of position and speed.

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