Abstract: A method for generating exploded view automatically for complex product by using assembly sequence planning and component geometric information is proposed. The structure of existing interference matrix is extended to axial directions of local coordinate system to analyze detachability of each component in tilt directions. From the viewpoints of geometric feasibility and assembly cost, each optimal disassembly component with direction and parallelism is stepwise screened out to form a wholly optimized sequence, using assembly relation matrices and several factors whose priority can be customized. Following principles of compact structure and sequence readability, displacement vector of each component is calculated by using its bounding box extracted directly and accumulative bounding box of exploded ones calculated in real time, while reading disassembly sequence. Each component is then driven to move to form the final exploded view. Assembly trace line and technical illustration can be developed further on this basis. The application system is developed on UG platform with a gear reducer taken as example to verify that the generation efficiency and the visual effect of the method meet the needs of engineering, which greatly reduces intensity of manual work.

Key words: Assembly sequence planning, Bounding box, Exploded view, Interference matrix