工程设计学报2025，Vol.32Issue(3)：393-402,10.DOI:10.3785/j.issn.1006-754X.2025.05.120
精密磨床液体静压导轨承载特性分析与参数优化
Analysis of load-bearing characteristics and parameter optimization of hydrostatic guideway in precision grinding machine
摘要
Abstract
Load-bearing capacity and stiffness are key performance indicators for measuring the load-bearing characteristics of hydrostatic guideways,directly affecting the machining accuracy and stability of precision grinding machines.In response to the unclear interaction mechanism of the structural parameters of the opposed oil pads in hydrostatic guideways and the limitation of existing studies focusing on single oil pad analysis,taking the granite hydrostatic guideway of a certain type of precision grinding machine as the research object,the load-bearing characteristic analysis and parameter optimization under the coupling effect of multiple parameters were systematically carried out.Firstly,based on the theory of fluid mechanics,a mathematical model of the load-bearing characteristics of the hydrostatic guideway was established,and analytical expressions for the load-bearing capacity and stiffness of the opposed oil pads were derived.Then,through single-factor analysis,the independent influence laws of oil supply pressure,oil cavity clearance,oil seal edge width and orifice throttler diameter on the load-bearing characteristics of the hydrostatic guideway were revealed.It was found that the oil supply pressure and oil cavity clearance had a significant impact on the load-bearing capacity and stiffness.Finally,27 groups of experiments were designed using the BBD(Box-Behnken Design)method,and a second-order polynomial regression model was constructed to analyze the interaction mechanism of multiple parameters.Meanwhile,the multi-objective optimization was carried out based on the response surface method,and the optimal solution set of the design parameters was obtained.The results showed that the load-bearing capacity and stiffness of the optimized hydrostatic guideway were improved by 24.99%and 19.62%,respectively.The research results provide a theoretical reference for the enhancement of the load-bearing performance and parameter optimization of hydrostatic guideways in precision grinding machines.关键词
液体静压导轨/承载特性/交互作用/参数优化/响应面法Key words
hydrostatic guideway/load-bearing characteristics/interaction/parameter optimization/response surface method分类
机械工程引用本文复制引用
张坤,郭宏亮,石有圣,李洪凯,赵栋杰..精密磨床液体静压导轨承载特性分析与参数优化[J].工程设计学报,2025,32(3):393-402,10.基金项目
山东省重点研发计划项目(2017NC212010) （2017NC212010）
山东省高校科研计划项目(J18KB009) （J18KB009）
