Design And Experimental Research Of Semi-active Vibration-reducing Platform For Machine Tool

The development of modern information technology and new materials help to promotethe development of modern machinery manufacturing technology. The machine tool industryis an important component of the manufacturing industry, which reflects the developmentlevel of a national manufacturing industry. The machine tool industry is also a key area ofdevelopment and revitalization for the machinery industry. In recent years, the rapiddevelopment of China’s machine-tool industry has made great achievements, but there stillexist many weak links. As in the technical aspects of the machine tool industry, many keytechniques didn’t resolve fundamentally such as rigidity, vibration, noise, detection. Thedevelopment of basic technology and applied technology for machine tool is still weak andthe quality level of precision, ultra-precision machine tools need to be further improved.The vibration of foundation and spindle rotation will stimulate the machine vibrationwhen the machine in the process of operation. Vibration caused great harm, not only producenoise, but also seriously affects the machining and the machining quality, especially for theprecision machine tool and the ultra-precision machine tool. Precision machine requirementsare extremely stable and minimal vibration, or it is difficult to obtain high machining accuracy.Therefore, vibration-reducing has become one of the key technology guarantee the machiningquality of super precision machining. This paper combines the development trend of sciencetechnology with the plan for construction of advanced manufacturing base of Zhejiangprovince, introduces a new intelligent MRF damping material and a magneto-rheologicaldamper for ultra-precision machine tools. For requirements of high speed and high efficiency,we need a vibration isolation for the machine tool which in the laboratory, then experimentalstudy was carried out, the experimental results show that the effect of shock absorbermagneto-rheological damping designed by us is good. Finally, we design a semi-activevibration control system experimental platform for the machine spindle.The main content of this research topic is divided into the following sections:(1) According to the requirements of machine vibration, designed a MR dampercombined with the basic theoretical knowledge of MR damper, the design includes structuralmaterial selection, calculation of structural parameter optimization, magnetic circuit designand mechanical parts’ processing technology. (2) This paper design a vibration isolation system for precision machine, then built thetest platform on laboratory.(3) This paper introduce the methods and steps of the finite element analysis, using thethree-dimensional design software SolidWorks and building up a test platform forexperimental modal analysis of precision machine tool, then got the inherent frequency andvibration type of precision machine tool, then comparative test analysis of the vibrationisolation effect on different vibration absorber.(4) Research on vibration-reducing test system of high speed spindle which is the keycomponents of ultra precision CNC machine tool, then this paper designs a high-speed spindlevibration test platform.(5) Summarized the full test, put forward the shortage of the paper and the direction offurther research.