Analysis and Research on the Modal Experiment of Series-Parallel Hybrid Grinding and Polishing Machine
In order to improve the dynamic performance of the grinding machine and improve the machining precision of the machine tool,a modal experiment is conducted on the complete machine and main sub-structures of the series-parallel hybrid grinding and polishing machine tool according to the basic theory of experimental modal analysis.Also,hammer impulse excitation and varied-time-based sampling methods are adopted to perform experimental modal analysis.Meanwhile,the eigensystem realization algorithm(ERA)is utilized to identify modal parameters,so that the low-order natural frequency,damping ratio and modal shape of the complete machine and its main substructures can be obtained.Based on the analysis of frequency and vibration mode,the beam is a weak link of the machine tool,while an approach to improve the dynamic characteristics of the machine tool structure is proposed to provide a basis for the optimized design of dynamics.
Xing-tian Qu Jia-he Zhang Xin Wang
Jilin University,College of Mechanical Science and Engineering,Changchun 130022,China
国际会议
广州
英文
1-5
2018-05-11（万方平台首次上网日期，不代表论文的发表时间）