基于ANSYS的贴片机床身结构优化设计

作者：姜凤鹏，莫锦秋 日期：2008-11-03/span> 浏览：4369 查看PDF文档

基于ANSYS的贴片机床身结构优化设计

姜凤鹏，莫锦秋
（上海交通大学 机械及动力工程学院，上海 200240）

摘要：提高贴片机床身的低阶频率是提高贴片机结构精度、避免共振、降低振幅的有效措施，为了提高其低阶频率,针对影响床身动态性能的3个主要因素，运用有限元分析软件ANSYS，对贴片机床身及其改进结构进行了模态分析，得到了贴片机床身结构的优化模型。分析结果表明，通过改变筋板布置方式、改变板厚和单元格开窗尺寸可对床身进行优化，优化后的结构低阶频率有了明显提高。
关键词：贴片机；ANSYS；结构设计；固有频率
中图分类号：TH122文献标识码：A文章编号：1001-4551(2008)10-0095-03

Optimal design for bed of place machine based on ANSYS
JIANG Fengpeng, MO Jinqiu
(College of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240)
Abstract: It is crucial to increase the low order natural frequency of the placement machine’s bed, which can improve structural precision, avoid resonance and reduce vibration level. In order to increase the low order natural freguency, modal analysis was made with use of ANSYS. By means of studying three main factors which can affect the dynamic characteristics of the bed, the improved structure of the bed was found. Analysis result shows that, the optimized structure can remarkably increase the low order natural frequency.
Key words: placement machine; ANSYS; structural design; natural frequency
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