What is the primary role of tool paths in CNC machining?

The primary role of tool paths in CNC machining is to dictate the movement of the cutting tool. Tool paths are the programmed routes that the cutting tool must follow to shape or cut the material as specified in the design. They are created based on the part geometry and the machining strategy required for the operation. By proper programming of tool paths, operators can ensure precision in the machining process, which directly impacts the quality and accuracy of the final product.

This movement is governed by parameters such as feed rate, cutting speed, and depth of cut, allowing for efficient material removal and adherence to design specifications. Understanding tool paths is essential for optimizing machining operations and achieving desired outcomes in CNC projects. Other options focus on aspects like machine selection, safety procedures, and material properties, which, while important in CNC machining, do not directly relate to the specific function of tool paths.