What is G-Code in CNC?

G-code is a programming language used to control CNC (Computer Numerical Control) machines. It is a set of instructions that tells the CNC machine how to move and position the cutting tool, as well as how fast to move and how much material to remove.

G-code is typically generated using CAD (Computer-Aided Design) or CAM (Computer-Aided Manufacturing) software and can be customized to meet the specific requirements of the machining process. The G-code program consists of a series of commands that are executed sequentially by the CNC machine.

The basic syntax of G-code consists of a letter followed by a number. The letter specifies the type of command, such as movement, cutting speed, or tool change, while the number specifies the value or parameter associated with that command. For example, the command “G01 X1.0 Y1.0” tells the machine to move the cutting tool to a position that is 1 unit in the X direction and 1 unit in the Y direction.

G-code is an essential part of CNC machining and is used in a wide range of applications, including milling, turning, drilling, and grinding. It allows for precise control over the cutting process, ensuring that parts are manufactured to the exact specifications required.

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