Tool Path

Tool path is the three-dimensional trajectory that the cutting tool follows relative to the workpiece, generated by CAM software to direct all cutting operations and transitions between features. Strategic tool path selection dramatically affects cycle time, surface finish, tool life, and material removal rate; for example, a contour milling strategy that follows the part outline produces good finish but may be slower than a parallel-plane strategy that removes material in layers.

CAM software offers different tool path algorithms optimized for different operations: adaptive roughing that varies chip load to stay within machine power limits, pencil milling that finishes walls after rough cuts, and high-feed paths that use aggressive depths and thin chip loads. Programmers evaluate multiple tool path strategies for each part, running simulations to verify no collisions occur, then selecting the strategy that best balances speed and quality for production.

Advanced CAM systems can optimize tool path automatically, reducing non-cutting time and material waste while improving surface finish and tool utilization.