数控刀架转位系统可靠性稳健设计方法研究  

Research on Reliability-based Robust Design Method for Rotation Systems of CNC Turrets

作　　者：黄贤振[1] 吴茂昌[1] 张义民[1] 胡乃涛[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《兵工学报》2013年第9期1132-1136,共5页Acta Armamentarii

基　　金：国家自然科学基金项目(51105062);中央高校基本科研业务费项目(N120503001);"高档数控机床与基础制造装备"科技重大专项(2013ZX04011011)

摘　　要：将可靠性优化设计理论、可靠性敏感度技术与稳健设计方法相结合,讨论数控机床回转刀架转位系统可靠性稳健设计问题。利用多体动力学仿真软件建立回转刀架转位系统运动学分析模型,开展实验设计获取系统响应与设计参数变化间的定量关系,采用神经网络拟合系统响应与设计参数间的函数关系,利用一次二阶矩方法对回转刀架转位系统进行可靠性分析和可靠性敏感度分析,建立回转刀架转位系统可靠性稳健设计模型。数字算例表明文中所述方法具有较高的计算效率和求解精度,通用性强,可以用于数控刀架转位系统的可靠性稳健设计。A reliability-based robust design for turret rotation systems of computered numerical control （CNC） machine tools is extensively discussed by combining the reliability-based optimization design the- cry, the reliability sensitivity technique and the robust design method. The commercial software is used to establish a kinematic analysis model of the rotation system of the turret. The design of experiment is ap- plied to obtain the quantitative relation between system responses and design variables, and then the arti- ficial neural network （ANN） is used to approximate the functional relation between system responses and design variables. The reliability and reliability sensitivity analyses are performed by using the first order second moment method. Finally, a model for reliability-based robust design of the rotation system of the turret is developed. A practical engineering study indicates that the proposed method is a general and ef- fective method for reliability-based design of the rotation system of the turret.

关 键 词：机械设计 回转刀架 转位系统 可靠性稳健设计 数控机床 

分 类 号：TH112.1[机械工程—机械设计及理论]