Research On Kinematic Modeling And Installation Simulation Of Cable Based On Virtual Reality Platform

The cable assembly planning is one of the key issues of the design of electro-mechanicalproducts, which affects quality and efficiency of the entire mechanism. Traditional method for cableplanning is accomplished by mock-up which will spend high cost and long time obviously. Virtualassembly technology, which is thought of a new method in this field, can plan an assembly design ofelectro-mechanical products fastly and accurately. Therefore, virtual assembly has become animportant means for the process design of electro-mechanical products in recent years.Based on the research done, the key techniques on the cable virtual assembly, including cablemodeling, cable collision detection, assembly tree module, have been studied, which is fundamentalresearch on the entire mechanism virtual assembly full of exploration and innovation.The main work are as follows:1. A cable kinematic model was proposed. The discrete idea was used, at the same time thecable ‘s gravity and energy optimization were considered in the model. The two-segment solutionalgorithm and four-segment solution algorithm were proposed for the discrete controle points of thecable. Then the cable can be shown by the cubic B-spline interpolation algorithm.2. A collision detection method was proposed with the mixed-level bounding box and imagespace according to the characteristics of wire planning based on virtual environmen. In the paper, thesphere bounding box was used to initial collision detection, and after a collsion, the image spacewas used to exact collision detection.3. An assembly structure tree module based on the virtual simulation platform was developed forthe first time. In the module the initial generation of assembly tree、automatic adjustment of the treenodes during assembly process of parts can be implemented. After assembly planning, and theassembly hierarchical relationship and assembly sequence files of parts can be obtained.4. A simulation instance including of cable modeling and virtual assembly for all parts of anelectro-mechanical product was demonstrated on the virtual assembly platform built by MFC andWTK.