Investigation of the tool-tip vibration and its influence upon surface generation in flycutting

Liang, Yingchun and Chen, Wanqun and An, Chenhui and Luo, Xichun and Chen, Guoda and Zhang, Qiang (2014) Investigation of the tool-tip vibration and its influence upon surface generation in flycutting. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 228 (12). pp. 2162-2167.

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Abstract

Flycutting is a major machining process for flat-surface machining, which is a typical intermittent-machining process. This paper is dedicated to study the influence of the intermittent-machining force on the workpiece surface generation. In the present study, some defects are identified on the machined surface and found to be corresponded to the tool-tip vibration by the dynamic analysis and the surface-generation simulation. A theoretical model is proposed to capture the dominant factor based on the characteristic. It reveals that the defects are attributed to the changing period of the intermittent-machining force and the dynamic performance of the machine tool. Hence, a surface-generation model is proposed to take account of the tool-tip vibration and the changing of the cutting locus. The simulation results have been found to agree well with the experimental results.