| 螺杆转子磨床砂轮架的动态特性分析与优化 |
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| 引用本文： | 孙文钊,王禹林,冯虎田.螺杆转子磨床砂轮架的动态特性分析与优化[J].组合机床与自动化加工技术,2011(12). |
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| 作者姓名： | 孙文钊 王禹林 冯虎田 |
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| 作者单位： | 南京理工大学机械工程学院,南京,210094 |
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| 基金项目： | 国家自然科学基金，国家科技重大专项，江苏省创新学者攀登项目，中国博士后基金号，江苏省博士后科学基金 |
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| 摘 要： | 以高精度数控螺杆转子磨床砂轮架为研究对象,利用ANSYS Workbench有限元分析软件对其进行了模态分析和谐响应分析,获得砂轮架的前六阶固有频率和振型,识别出砂轮架的薄弱环节,并验证了砂轮架能够成功克服共振.在此基础上,以提高砂轮架低阶固有频率和降低总质量为优化目标,提出了三类改型方案,采用方案对比优选的方法确定综合方案,并通过静力分析验证了综合方案的可行性.结果表明:与原结构相比,优化后砂轮架的一阶固有频率提高了8.63％,同时总质量减轻了8.84％,达到了较好的优化效果,为砂轮架结构的改进优化提供了理论参考依据.
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| 关 键 词： | 螺杆转子磨床 砂轮架 模态分析 谐响应分析 结构优化 |
Dynamic Characteristics Analysis and Optimization of Screw Rotor Grinder' s Grinding Carriage |
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| SUN Wen-zhao,WANG Yu-lin,FENG Hu-tian.Dynamic Characteristics Analysis and Optimization of Screw Rotor Grinder' s Grinding Carriage[J].Modular Machine Tool & Automatic Manufacturing Technique,2011(12). |
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| Authors: | SUN Wen-zhao WANG Yu-lin FENG Hu-tian |
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| Affiliation: | SUN Wen-zhao,WANG Yu-lin,FENG Hu-tian(College of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China) |
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| Abstract: | Taking the high precision NC screw rotor grinder's grinding carriage as the researching object,the modal analysis and harmonic responses analysis are made by ANSYS Workbench finite element analysis softw are.The first six orders of natural frequency and mode shapes are obtained,the w eak points of grinding carriage are identified,and it is verified that the grinding carriage could successfully overcome resonance.Then,three retrofit schemes are presented w ith increasing grinding carriage's low order natural... |
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| Keywords: | screw rotor grinder grinding carriage mode analysis harmonic responses analysis structure optimization |
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