A time-space discretization method in milling stability prediction of thin-walled component

• DOI: 10.1007/s00170-016-9379-5
• Publication Date: 2016-08-29T15:30:14Z
• Authors: Qinghua Song; Jiahao Shi; Zhanqiang Liu; Yi Wan
• Keywords: Component (thermodynamics); Mode (computer interface); Position (finance)

The stability prediction of thin-walled workpiece milling is an awkward problem due to the time variant of dynamic characteristics during milling process. Integrating the time discretization method for stability prediction mentioned in many articles, a novel time-space discretization method for thin-walled component milling stability prediction is proposed based on thin plate theory and mode superposition principle, which includes the effects of the engagement position between cutter and workpiece and multi-modes of the system. The results show that the method presented is very reliable and efficient, and its accuracy is also in good agreement with experimental results. Additionally, the method can be used to handle various complex boundary conditions by means of the updated Rayleigh-Ritz solutions together with the penalty method. Two case studies are performed to explain the validation of the method as well as milling experiments of a half-clamped thin plate.