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Study On Some Key Technological Problems Of High Speed Machine Tool

Posted on:2007-05-07Degree:DoctorType:Dissertation
Country:ChinaCandidate:Y M ZhangFull Text:PDF
GTID:1101360185977745Subject:Mechanical Manufacturing and Automation
Abstract/Summary:PDF Full Text Request
High speed and high precision is one of the main developing tendencies of modern machine tool. Along with the demand of high speed and high precision NC machining of manufacturing, the high speed and high precision machine tools are studied more and more deeply, and some scientific research results of great value have been obtained. High speed and high precision machinery should have not only high spindle speed and high feeding speed, but also high spindle and feeding system acceleration. As for the high speed and high precise machine tools, the final performances and the final manufacturing quality of the machine tools will be affected directly by the characteristics of spindle system. In order to improve the quality of products, it is very important that studying the performance of spindle system, and building the dynamic models of that, and evaluating the performance in the process of design.The research and development of CHH6125 high speed machine tool is the national 863 and the tenth five years item which is undertaken by Shenyang No. 1 Plant of Machine Tool. Some theoretic calculation, FEA and system dynamic imitation in the key technological problems of high acceleration moving performance of machine tools' feeding system and dynamic characteristic of bed system and etc. are done in order to increase the performances of the machine tool.The thesis's research is based on summing the research outcome and further research. The dynamic characteristics and thermal performances of spindle assembly of CHH6125 machine tool's spindle assemblies are studied mainly in the paper by using the method of theoretic models and Finite Element Analysis. After that, some necessary experiments of the machine tool are done, based on it some necessary recommendations to the theoretic model and FEA model can be done. The Work is also a foundation for further improving the dynamic characteristic of high speed machine tool's spindle system. The details are in...
Keywords/Search Tags:High Speed Machinery, Spindle Units, Spindle Bearing, FEA, ANSYS, Transfer Matrix, Heat Transfer
PDF Full Text Request
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