What does the command G1 represent in CNC programming?

The command G1 in CNC programming is used to denote linear interpolation. This means that when a CNC machine receives this command, it will move in a straight line at a specified feed rate to the designated coordinates. Linear interpolation is essential for machining straight paths, contours, and other shapes where precision movement is required along a defined line.

In practical CNC machining, using G1 is crucial for operations that involve cutting or shaping a material, as it allows the tool to follow a precise path while maintaining an appropriate speed for the material being worked on. This functionality is foundational for tasks that require a degree of accuracy and control, such as milling, engraving, or machining complex parts.

The other commands listed serve different purposes within CNC programming; for instance, rapid positioning is indicated by a different command, which allows the machine to move at the highest possible speed without cutting. Circular interpolation is utilized for movements that follow a circular path, and dwell refers to a pause in the machining process. G1 specifically highlights the importance of linear movement, making it critical to understand in the context of CNC operations.