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Machine tool temperature field modeling and dynamic analysis

Author: DiShaoJian
Tutor: WuLiangSheng
School: Beijing University of Technology
Course: Mechanical Engineering
Keywords: CA6140 Machine tool Temperature field Thermal deformation ANSYS Dynamic characteristic
CLC: TG502.1
Type: Master's thesis
Year: 2011
Downloads: 248
Quote: 1
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Abstract


The rapid development of manufacturing industries in the world today, the thermal deformation of machine tool increasing problem , which greatly hindered the development of new technologies . It is now increasingly recognized such a view: precision machining often depends on the size of the thermal deformation of the structure , rather than the size of dynamic stiffness . German machine tool experts believe \According to the analysis , in modern machining parts manufacturing error , the machine errors caused by thermal deformation sometimes up to 50% in the precision machining of this proportion will reach 40% -70%. Therefore, because the temperature deformation of machine tools , machine tools and build a distribution of temperature field and temperature field based on the dynamic characteristics of study to calculate the tool in the machining process due to changes in temperature and the amount of deformation caused by the machine parameter changes , determine the size of the error , to provide compensation for the processing parameters , and ultimately improve the machining accuracy . In this paper, CA6140 lathe as the research object , using the finite element method, using ANSYS software, build CA6140 lathe machine temperature field model and the dynamic characteristics of the specific work as follows: ( 1 ) This paper introduces Chapters the basic theory of heat transfer , temperature field theory of ANSYS finite element analysis of temperature field in the relevant theoretical basis. The following analysis is to establish and provide a theoretical basis for the whole temperature field . ( 2 ) The third chapter introduces the research object CA6140 lathe basic institutions and working principle , the establishment of a three-dimensional model of lathe . Analysis and calculation of the heat out of the CA6140 lathe parts - bearing heating power , as well as solving the temperature field data , the use of finite element analysis, the temperature of the entire field of machine tools and lathes deformation. ( 3 ) Chapter IV presents the API THERM-500 instrument software and hardware related content , and the lathe for testing , inspection by finite element analysis and testing of the theoretical amount of deformation deformation error size. ( 4 ) Chapter in machine tool for the study, to calculate the machine in both hot and cold state, the dynamic changes and to analyze the amount of change , draw temperature field on the dynamic characteristics of machine tool size.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > General issues > Machine tool design, manufacture and maintenance > Machine tool design and principles
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