Dynamic Cutting Force Prediction for Optimized Milling Parameter Selection in Autodesk Fusion

Machinist dynamics models may be used to predict milling performance and select optimal parameters at the computer numerical control (CNC) path planning stage. The intent is to select parameters that enable first part correct performance and avoid trial-and-error parameter identification. This requires that chatter, or self-excited vibration, does not occur, and that acceptable accuracy and surface finish are achieved. This session will demonstrate dynamic force prediction for Autodesk Fusion toolpaths, which incorporates the tool tip vibration response to predict the dynamic cutting force and tool vibration and the effect of relative vibration between the cutting tool and workpiece on the milling stability. This enables us to identify and correct locations where chatter occurs before part production. It introduces a feed rate optimization capability that modifies cutting times by updating the feed rate. And it has been shown to reduce cycle times by up to 50%. We’ll select an aerospace part and show results.