Study On The Method Of Assembly Sequence Optimization For Typical Mechanical Products In The Virtual Assembly Environment

The conception of Virtual Manufacture Technology has advanced in recently ten years. Along with the developing of computer's software and hardware, Virtual Manufacture, Virtual Environment, Virtual Assembly and the relative technology grow up very quickly. As a kind of unit technology of virtual product design technology, virtual assembly is playing an important role in virtual manufacturing. And the virtual assembly technology, which is the important link of virtual product design and manufacturing, is drawing more and more attention of people.This article is based on an analysis of virtual assembly technology, typical mechanical products for the research subjects, research on the theory and key technologies of virtual assembly. To the information model of product assembly do in-depth study and exploration and sum up the assembly information model of the assembly sequence planning-hierarchical model Information assembly. The model to describe the level of information of product assembly model, the assembly relation information as well as provide good support for the special attributes information. Based on in the assembly model, use of the associated matrix assembly, channel assembly function, stability of the assembly function and so on, study of the assembly sequence generation and optimization, and adopted by fuzzy comprehensive evaluation method to evaluate the assembly sequence hazily, screening the best scheme of sequence assembly; Based on the assembly sequence and three-dimensional posture movement matrix and its transformation matrix, in-depth study of the assembly process simulation technology.In this paper , sending a single-stage reducer as an example, I applicated the virtual assembly system to complete the assembly modeling, the virtual assembly assembly information extraction, the assembly sequence generation, the optimization and the assessment of the assembly sequence, as well as the assembly simulation , thus we authenticated the application of the system in the virtual assembly sequence optimization.