滑块式二回转自由度并联机构误差分析  

Error Analysis of a Slider Type of Two Degree of Freedom Parallel Mechanism

作　　者：王超[1] 蔡善乐[1] 黄亚洲[1] 

机构地区：[1]兰州理工大学

出　　处：《工具技术》2014年第1期31-33,共3页Tool Engineering

摘　　要：介绍一种新型的滑块式二自由度并联机构,这种机构可以实现空间两自由度转角摆动。通过用矢量微分计算的方法建立了该并联机构的误差模型。利用误差模型分析了该并联机构当中的滑块机构误差、杆长误差以及球铰间隙对动平台误差的影响。通过误差建模为该机构的设计和误差补偿提供了理论依据。Abstract： A neotype 2 degree of freedom of parallel mechanism, which can demonstrate two - dimensional rotations about y - axis and x - axis, was introduced. The error model of the parallel machanism was set up via the vector - differen- tial - calculation method. And the error of sliding block mechanism, the error of the bar length and the influence of the ball joint clearance error of the moving platform can be analyzed. It is a key theoretical foundation that is to design this mecha- nism and composer the error.

关 键 词：并联机构 二自由度 误差建模 矢量方法 

分 类 号：TG502.1[金属学及工艺—金属切削加工及机床] TH721[机械工程—仪器科学与技术]