Improving the Simulation Accuracy in NC Milling by Using a Global CSG Workpiece Model

摘要

The highest geometric precision in a milling simulation can be achieved by using a CSG-based workpiece model. This allows the prediction of cutting forces, process dynamics and surface structures. To further improve the accuracy of the predictions, a new global CSG model is proposed to replace the previously used local CSG model without any negative impact on the runtime of the simulation. In addition, the runout of the tool has to be included in the modeling process to obtain correct results. In this paper, the new modeling techniques and their experimental validation are presented.