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浙江大学学报(工学版)
J4  2009, Vol. 43 Issue (09): 1649-1654    DOI: 10.3785/j.issn.1008973X.2009.
    
Design and accuracy for POGO stick with three-axis
 GUO Zhi-Min, JIANG Jun-Xia, KE Yang-Lin
(State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China)
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Abstract  

A method of posture alignment based on a parallel mechanism consisting of three limbs with threeaxis for translation was developed to solve the problem of automated posture alignment and joining in aircraft digital assembly system. The limb called POGO stick with threeaxis and high accuracy must have high technical specifications  according to the process of posture alignment and joining. The structure of POGO stick was designed in detail. And the key measures of mechanical design were suggested to improve its working performance. An error model of location in workspace was established through synthetic analyzing of the main effect factors of location error. Then a computing method for geometric tolerance of base mounted plane of linear guide was introduced. Results show that the method has high accuracy and stiffness, which can satisfy the application requirement of aircraft digital assembly system. Some posture alignment mechanisms for other largesize components can be constituted by modular configuration of the POGO sticks, which act as the base cells of digital flexible assembly system．

CLC:  TH 122  
  TH 161+.12  
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Cite this article:

GUO Zhi-Min, JIANG Jun-Xia, KE Yang-Lin. Design and accuracy for POGO stick with three-axis. J4, 2009, 43(09): 1649-1654.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008973X.2009.     OR     http://www.zjujournals.com/eng/Y2009/V43/I09/1649


一种精密三坐标POGO柱设计与精度研究

针对飞机数字化装配中大部件调姿与对合问题,提出一种由3个具有三平动自由度的分支机构构成并联机构对飞机大部件进行支撑和姿态调整的方法.根据飞机大部件调姿对合装配工艺要求,三坐标POGO柱应具有高的设计指标,对POGO柱结构进行详细设计,并提出用于提高其工作性能的关键措施.通过综合分析引起POGO空间定位误差的因素,建立空间定位误差的数学模型,进而得到确定导轨安装基准面形位公差的方法.实验结果表明,基于3个精密三坐标POGO柱的大部件调姿方法能够满足飞机部件调姿的高精度、高刚度要求.将精密三坐标POGO柱作为数字化柔性装配系统的基础部件,通过模块化配置还可以适应各类大型部件姿态调整的应用需求.

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