大直径菲涅尔透镜模具加工机床静动态特性

发布时间：2018-05-19 18:44

本文选题：菲涅尔透镜 + 模具加工　；参考：《北京工业大学学报》2015年11期

【摘要】：为了解决大直径菲涅尔透镜模具加工机床的加工稳定性、精度难以保证的问题,基于ANSYS Workbeach软件,对机床整体进行静动态分析.首先,通过静态分析得到大直径菲涅透镜模具加工机床整机的薄弱环节;然后,利用模态分析法得到机床整机前六阶的模态振型并分析了机床结构的模态频率及振型之间的关系.分析结果表明:横梁稳定性较低,为机床的薄弱环节,横梁内部x向筋板需要加强;机床最大位移发生在横梁位置,变形主要发生在地脚,需要改善优化地脚数量与布局.改进方案为:横梁筋板厚度不变,将内部原垂直构成的十形结构筋板改为V型结构;箱体前段需要增加3个地脚并成等距排列以提供支持力,从而加强机床刚度.
[Abstract]:In order to solve the problem that the machining stability and precision of the large diameter Fresnel lens die machining machine are difficult to guarantee, the static and dynamic analysis of the whole machine tool is carried out based on ANSYS Workbeach software. First of all, through static analysis, the weak points of the machine tool for large diameter Finn lens mold processing are obtained; then, The first six modes of machine tool are obtained by modal analysis and the relationship between modal frequencies and modes of machine tool structure is analyzed. The results show that the stability of the beam is low, which is the weak link of the machine tool, and the maximum displacement of the machine tool takes place in the position of the beam, and the deformation mainly occurs in the ground foot, and the number and layout of the ground foot need to be improved. The improvement scheme is as follows: the thickness of the beam-stiffened plate is invariable, the ten-shape stiffened plate with the original vertical structure is changed into V-shaped structure, and the front section of the box needs to be increased by three feet and arranged at equal distance to provide the supporting force, thus strengthening the rigidity of the machine tool.
【作者单位】：北京工业大学机械工程与应用电子技术学院;滨州学院机电工程系;
【基金】：国家科技重大专项资助项目(2011ZX04004-011)
【分类号】：TG502

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