Chatter Stability Prediction in High Speed Milling Considering Multi-Degree of Freedom

Abstract:

Chatter problems occurring during high speed milling affect the quality of the finished workpiece and, to a lesser extent, the tool life and the spindle life. Therefore, the prediction of stable milling regions is a critical requirement for high speed milling operations. In this paper, a dynamic model of a high speed spindle system considering the multi-mode dynamics is elaborated for the purposed of stability prediction. A stability lobes diagram (SLD) shows the boundary between chatter-free machining operations and unstable processes, in terms of axial depth of cut as a function of spindle speed. These diagrams are used to select chatter-free combinations of machining parameters. The proposed method enables a new stability lobes diagram to be established that takes into account the effect of spindle speed on multi-mode dynamic behavior.

• Periodical: Key Engineering Materials (Volumes 431-432)
• Pages: 373-376
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.431-432.373
• Online since: March 2010
• Authors: Shan Shan Sun, Wei Xiao Tang, Xi Qing Xu
• Keywords: Chatter, Frequency Response Function (FRF), High Speed Milling (HSM), Multi-Degree of Freedom, Stability Prediction

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