摘要
为了提高六轴混机床的运动精度,以其3-RPS并联机构为研究结构模型,分析了影响机构可达空间的几何误差源,建立了位姿误差模型。在ADAMS虚拟样机建模环境中,构建了包含全部几何误差参数的机构运动学模型,仿真了主要几何误差参数对终端运动精度的影响规律。根据仿真结果,对并联机构所有的几何误差从误差源到工作空间的映射关系进行了分析和评价。
In order to improve the kinematic accuracy of a six-axis hybrid machine tool,we study its 3-RPS parallel mechanism,analyze the geometric errors that influence its reachable space and establish its attitude error model.We use the ADAMS virtual prototyping software to construct the kinematics model of the parallel mechanism that includes all parameters of geometric errors and to simulate the effects of the major geometric errors on the kinematic accuracy of the parallel mechanism.According to the simulation results,we evaluate the mapping of all its geometric errors,including those of error source and workspace.
出处
《机械科学与技术》
CSCD
北大核心
2012年第3期465-469,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家重点基础研究发展计划项目(973)(2009CB724406)
国家重大专项项目(2009ZX04014-032)资助
