三自由度混联机床的机构误差分析与仿真  

Accuracy Analysis and Simulation of Three Degrees of Freedom Hybrid Parallel Machine Tool

作　　者：李兴山[1] 蔡光起[2] 

机构地区：[1]沈阳理工大学机械学院,沈阳110168 [2]东北大学机械工程与自动化学院,沈阳110004

出　　处：《组合机床与自动化加工技术》2011年第3期19-22,共4页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：文章提出了一种新的三自由度混联机床构型,基于Solidworks建立其三维实体模型。利用误差独立作用原理,建立了误差分析数学模型。通过矩阵分析方法结合运动学微分方程,分析了并联机床静态误差,得到固定平台铰链点位置误差、驱动杆长度误差与运动平台位置误差的映射关系,并对机构误差在工作空间内的分布规律进行了仿真,为混联机床的误差补偿提供了理论基础。The paper proposed a novel three degrees of freedom hybrid parallel machine tool.The three dimensional model is complied by Solidworks.The mathematic model of error is set up by use of independent error theory.Analyzing the static error of parallel machine tool by matrix method and differential of kinematic function.The mapping from the joint error of base platform and the error of link to the position of the moving platform was achieved.The distribution rule of mechanical error was simulated in the working space.The analysis provides theoretical foundation for the error compensation of hybrid parallel machine tool.

关 键 词：混联机床 误差分析 精度 

分 类 号：TP242.2[自动化与计算机技术—检测技术与自动化装置]