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A New Dynamics Analysis Model for Five-Axis Machining of Curved Surface Based on dimension reduction and mapping

Chinese Journal of Mechanical Engineering 2023年第6期36卷 172-184页

作者： Minglong Guo Zhaocheng Wei Minjie Wang Zhiwei Zhao Shengxian Liu Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education Dalian University of TechnologyDalian 116024People’s Republic of China Institute of Mechanical Manufacturing Technology China Academy of Engineering PhysicsMianyang 621000China

The equipment used in various fields contains an increasing number of parts with curved surfaces of increasing ***-axis computer numerical control(CNC)milling is the main parts machining method,while dynamics analysis has always been a research *** cutting conditions determined by the cutter axis,tool path,and workpiece geometry are complex and changeable,which has made dynamics research a major *** this reason,this paper introduces the innovative idea of applying dimension reduction and mapping to the five-axis machining of curved surfaces,and proposes an efficient dynamics analysis *** simplify the research object,the cutter position points along the tool path were discretized into inclined plane five-axis *** cutter dip angle and feed deflection angle were used to define the spatial position relationship in five-axis *** were then taken as the new base variables to construct an abstract two-dimensional space and establish the mapping relationship between the cutter position point and space point sets to further simplify the dimensions of the research *** on the in-cut cutting edge solved by the space limitation method,the dynamics of the inclined plane five-axis machining unit were studied,and the results were uniformly stored in the abstract space to produce a ***,the prediction of the milling force and vibration state along the tool path became a data extraction process that significantly improved *** experiments were also conducted which proved the accuracy and efficiency of the proposed dynamics analysis *** study has great potential for the online synchronization of intelligent machining of large surfaces.

关键词： Curved surface Five-axis machining dimension reduction and mapping Milling force Dynamics

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