What is “tool path programming” in CNC milling?

Tool path programming in CNC milling refers to the creation of a precise sequence of movements that the machine will follow during the machining process. This programming utilizes various coding languages, commonly G-code, to command the CNC machine to move the cutting tool along specific trajectories in relation to the workpiece.

The intricacies of tool path programming include not just the linear and circular movements of the cutter but also considerations for speeds, feeds, and tool changes, which altogether ensure that the final shape and finish of the part meet the required specifications. Properly programmed tool paths are crucial for optimizing machining efficiency, ensuring accuracy, and achieving the desired surface finish on the workpiece.

The other options focus on different aspects of CNC operation. Adjusting machine speed and calibrating sensors are important for machine performance, while measuring tool wear is essential for maintenance and quality control, but they do not encompass the core function of directing the movement of the tool in relation to the workpiece, as tool path programming does.