A Novel Investigation on Machining Dynamics, Instability and Surface Topography in Peripheral Milling

摘要

Based on an improved dynamic cutting force model proposed by the authors and the vibration model of peripheral milling, this paper presented a novel closed-loop machining dynamics model, for the purpose of predicting the dynamic cutting forces, cutter vibration , machining instability, and surface topography of the surface machined. The modal parameters of the machining dynamics system were identified with the experimental modal analysis using the real-time measured cutting force and the cutter vibration. Simulations are carried out to investigate the effectiveness of the proposed model. The dimensional accuracy of the surface machined can be estimated from the simulated surface topography. The simulation result reveals that the proposed model is capable of predicting the machining instability.