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液压机的静刚度是保证其工作性能的重要指标。文中针对具备移动回转压头的无拉杆的组合龙门框架式压机进行研究。以THP34Y-1000G和S-THP34Y-1500作为样机,利用美国FARO公司生产的Laser Tracker X V2激光跟踪仪和瑞士Leica AT901-LR绝对跟踪仪对其分别进行静刚度的实验检测。建立空间坐标-载荷-变形的数学模型,利用1stOpt软件基于麦夸特法(Levenberg-Marquardt)和通用全局优化法对实验数据进行多元非线性回归方程拟合,得到并验证了该类型液压机上下横梁在不同载荷下通用的变形方程模型,为液压机结构的设计、刚度检测等提供借鉴。
Static stiffness hydraulic machine is to ensure that its performance an important indicator. In this paper, there is no tie rod with a combination of mobile rotary ram frame gantry press for research. Taking THP34Y-1000G and S-THP34Y-1500 as prototypes, the laser tracker X V2 laser tracker manufactured by FARO Company of America and the Swiss Leica AT901-LR absolute tracker were used to test the static stiffness respectively. The mathematical model of space coordinate-load-deformation was established. Based on the Levenberg-Marquardt and generalized global optimization method, 1stOpt software was used to fit the experimental data by multiple nonlinear regression equations. The universal deformation equation model under different loads provides reference for the design of hydraulic machine structure and stiffness detection.