What does G-code represent in CNC machining?

G-code represents a language used to instruct CNC machines on how to perform various machining operations. It consists of a series of codes and commands that dictate the movements and actions of the machine, such as position, speed, and tool engagement. This code essentially tells the machine how to move in three-dimensional space, the speed at which to cut, and which tools to use.

In the context of CNC machining, G-code is crucial because it translates the design from CAD (Computer-Aided Design) into machine movements. For instance, it can specify commands for drilling, milling, or turning operations, and the machine interprets these commands to accomplish complex tasks with precision.

While operator commands could be a part of the G-code, the primary purpose of G-code is to serve as the machine code for the operations themselves, linking directly to how the CNC machinery executes detailed machining processes. This foundational role of G-code differentiates it from dimension standards and material specifications, which pertain to the design and properties of the workpiece rather than the operational instructions for the machinery.