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基于缩聚理论的主轴箱刚度表征方法
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国家自然科学基金青年科学基金项目(51905328);陕西省自然科学基础研究计划项目(2019JQ-774);陕西科技大学“引进博士科研启动基金”(2017BT-02)


Stiffness Characterization Method of Headstock Based on Polycondensation Theory
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    摘要:

    基于刚度缩聚的思想,提出面向复杂载荷的机床及其零部件的刚度矩阵归一化表征模型,能够实现任意载荷构型下刚度特性的一致性表达。以主轴箱为工程对象进行实例应用,建立包含参数信息的刚度表征模型,识别刚度薄弱方向,明确刚度设计的优化目标。分别采用刚度表征模型和有限元分析法求解镗削加工主轴箱变形量,验证刚度表征模型的准确性。对比两种方法的求解结果,可知基于缩聚理论的刚度表征方法能够在保留系统刚度特性的同时,快速求解变形量,提高了分析效率。

    Abstract:

    Based on the theory of stiffness polycondensation,a normalized characterization model of stiffness matrix for complex loads was proposed,which could achieve the consistent expression of stiffness characteristics under any load construction of multiple working conditions.Taking the machine tool’〖KG-*3〗s headstock as an engineering application,a stiffness characterization model containing parameter information was established to identify the weak direction of stiffness and clarify the optimization goal of stiffness design.The stiffness model and the finite element analysis were used to solve the deformation of the headstock in the boring condition,and the accuracy of stiffness characterization model was verified.It is proved that stiffness characterization method can be used to solve the deformation quickly when retaining the system stiffness characteristics by comparing the solution results of the above two analysis methods,which improves the analysis efficiency.

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高羡明,华梦怡,张功学,李端玲,郭宁波.基于缩聚理论的主轴箱刚度表征方法[J].机床与液压,2023,51(3):156-161.
GAO Xianming, HUA Mengyi, ZHANG Gongxue, LI Duanling, GUO Ningbo. Stiffness Characterization Method of Headstock Based on Polycondensation Theory[J]. Machine Tool & Hydraulics,2023,51(3):156-161

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  • 在线发布日期: 2023-03-02
  • 出版日期: 2023-02-15