Modeling techniques for simulating workpiece deflections in NC milling

Due to the time- and position-dependent dynamic behavior of the workpiece, the prediction of process dynamics during the five-axis milling of thin-walled free-formed surfaces is a challenge from the modeling point of view. In this paper, three different techniques for modeling workpiece deflections and their integration into a system for simulating the NC milling process will be discussed by means of analyzing the machining of a turbine blade.