【作者】 陈宗帖；

【导师】 陈家权；

【作者基本信息】 广西大学 ， 机械设计及理论， 2007， 硕士

【摘要】 本文在总结机床结构分析发展现状的基础上，针对某型平面磨床加工精度不高的问题，以ANSYS有限元软件为平台，利用其二次开发工具，在ANSYS系统中开发了具有中文界面的集参数化建模、有限元分析、优化分析、热分析、接触分析于一体的平面磨床有限元分析系统。本系统的成功开发，证实了以ANSYS为平台开发专业模块的可行性，提高了工作效率。首先，本文将ANSYS二次开发技术应用于平面磨床有限元结构分析，并开发出实用的程序模块，嵌入ANSYS并作为ANSYS程序的一部分。本程序模块在平面磨床结构分析方面具有创新意义的成果，所归纳总结的ANSYS开发技术的基本方法和过程具有普遍的适用性。其次，结合二次开发界面对磨床部件(如拖板、立柱)进行了静态、模态分析，改进结构。对三种拖板与立柱结构进行优化，优化后三种拖板与立柱结构的质量分别下降了21.54％(486.9kg)、14.46％(327.5kg)、19.3％(437.8kg)；Z向位移量分别减少了16.43％、24.2％、26.02％，结构固有频率变化比较小。最后，对磨床原始结构进行了位移现场测试。测试结果表明，拖板有较大的俯仰位移，影响加工精度。对拖板与立柱结构进行接触分析，比较分析结果与测试结果，发现，楔铁和滚珠丝杠结构的传动间隙是影响平面磨床加工精度的主要原因。本文的静、动态分析结果及改进方案对平面磨床的设计和结构改进具有重要的参考价值。更多还原

【Abstract】 Based on the state-of-the-art of structural analysis of machine tool,considering the lower of process precision of surface grinder, and taking ANSYSas the platform, and using its secondary development tools, this article developedthe surface grinding machine finite element analysis system which has Chineseinterface and integrate the parametric modelling, the finite element analysis, theoptimized analysis, the thermal analysis, and the contact analysis. Withdevelopment of this system, the feasibility that regards ANSYS as the platform ofdeveloping professional module was verified and working eficiency wasimproved.Firstly, This article applied the secondary development technique of ANSYSto surface grinding machine finite element construction analysis and developed apractical procedure Mold piece and set it in ANSYS as a part of theprogrammer. This procedure mold piece is a creative achievement for surfacegrinding machine construction analysis. The essential method and procedureincluded in this article for the secondary development of ANSYS have awidespread applicability. Secondly, It took static and modal analysis to the grinding machine parts(for example planker, pillar), by combining secondary development interfaces,improved the construction. Based on the improved projects, three kinds of plankerand pillar was optimized by using Sub-Problem method in ANSYS, after then,the weight of planker and pillar was decreased separately 21.54% (486.9kg),14.46% (327.5kg), 19.3%(437.8kg); Z axis distortion decreased separately16.43%、24.2%、26.02%, and the natural frequency also little change.At Last, the original surface grinder was field tested, the result indicated thatthe planker has pitching distortion, effect the process precision of grinder.Compared the analysis result with the test result, finally discovered, the ballscrew structure transmission gap and wedge is the primary factor which affect theprocess precision of surface grinder.The result of static analysis, dynamic analysis and improved projects willprovide significant reference for the design and structure improvement of surfacegrinder.更多还原