Abstract
To overcome the shortcomings of existing technology and achieve a type of shaft and sleeve assembly in navigate with high coaxial requirements, a novel coaxial positioning system is presented based on the flexible decoupling beams and micro-vision system. In order to meet the adjustments online and maintain posture of the shaft and sleeve, a flexible beams structure with pattern of “square lattice” is designed. Combined with micro motorized X-Y stage and clamps, the structure achieves exact coaxial positioning precision and station keeping function. The mechanics theory and finite element method are used to analysis and simulate the beams. The Hough algorithm is applied in the micro-vision system to realize the precise coaxial positioning of real-time detection and calculation. Experiments show that the coaxial positioning accuracy is better than 8μm, and the positioning device could guarantee the realization of positioning assembly in practical applications.
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