What does code G stand for?

In CNC (Computer Numerical Control) programming, the letter “G” is used to represent “geometry” or “geometric”. G-codes are a set of programming instructions that control the movement and position of the cutting tool in relation to the workpiece.

G-codes are used to specify the type of motion, the direction of movement, the distance or increment of movement, the speed or feed rate, and other parameters related to the machining process. For example, a G-code might be used to move the cutting tool along a straight line, or to make a circular or helical motion.

Some common G-codes include G00 for rapid traverse, G01 for linear interpolation, G02 and G03 for circular interpolation, G28 for machine zero return, and many others. Each CNC machine has its own set of supported G-codes, which can be programmed using specialized software or by manually entering the codes into the machine’s control panel.

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