What type of data input do CNC machines rely on?

CNC machines rely on numerical data in the form of G-code because this programming language is specifically designed to communicate the precise instructions needed for machine operation. G-code consists of coordinates and commands that guide the CNC machine on how to move, cut, and shape the material being worked on. Each line of G-code corresponds to a specific task, such as moving the tool to a certain position, starting or stopping the spindle, or adjusting the feed rate.

Using G-code allows for high levels of accuracy and repeatability, which are essential in CNC machining. It standardizes the communication process between the computer and the machine, facilitating the automation of complex tasks and ensuring that the final output consistently meets the desired specifications. This makes it the preferred method of data input for CNC operations over other forms of input like sketch diagrams, manual settings, or image files, which do not provide the necessary precision and detail needed for effective machining.