动力伺服刀架端齿盘分度精度可靠性灵敏度设计

发布时间：2018-04-17 11:39

本文选题：分度端齿盘 + 加工误差　；参考：《东北大学学报(自然科学版)》2017年06期

【摘要】：端齿盘加工精度的高低会直接影响到整个刀架的分度精度.在对端齿盘加工误差进行分析的基础上建立了端齿盘的分度误差模型,利用二阶矩和摄动方法求出端齿盘的可靠性指标,并计算出其可靠度.以端齿盘的分度误差模型为基础,将可靠性理论与灵敏度分析方法相结合,给出了动力伺服刀架端齿盘分度精度可靠性灵敏度设计的分析方法.通过算例得出了端齿盘各随机参数的可靠性灵敏度变化规律,并分析了各随机参数的变化对端齿盘分度精度可靠性的影响.研究表明,端齿盘各设计参数的改变对其可靠性的敏感程度不一,可通过优化敏感参数来提高齿盘的分度精度可靠性.同时为提高刀架系统的分度精度可靠性提供理论依据.
[Abstract]:The machining accuracy of the end-tooth disk will directly affect the indexing accuracy of the whole tool holder.Based on the analysis of the machining error of the end tooth disk, the indexing error model of the end tooth disk is established. The reliability index of the end tooth disk is obtained by using the second order moment and perturbation method, and the reliability of the end tooth disk is calculated.Based on the indexing error model of the end gear plate and combining the reliability theory with the sensitivity analysis method, this paper presents an analytical method for the reliability sensitivity design of the indexing accuracy of the end tooth disk of the dynamic servo tool holder.The reliability sensitivity of each random parameter of the end tooth disk is obtained by an example, and the influence of each random parameter on the accuracy and reliability of the end tooth disk indexing is analyzed.The results show that the sensitivity of different design parameters to the reliability of the end disk is different, and the reliability of the indexing accuracy can be improved by optimizing the sensitive parameters.At the same time, it provides a theoretical basis for improving the indexing accuracy and reliability of the tool holder system.
【作者单位】：东北大学机械动力学与可靠性研究中心;东北大学机械工程及自动化学院;
【基金】：国家自然科学基金资助项目(51475086) 辽宁省自然科学基金资助项目(2014020026) 河北省自然科学基金资助项目(E2015501073) 中央高校基本科研业务费专项资金资助项目(N152304004)
【分类号】：TG659

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