Study Of Mechanical Assembly Structure Gene Model

Mechanical Assembly is the last and important process of mechanical design. For a long time, the research on mechanical assembly is a hot issue, and many new design theories have been proposed, such as Virtual Assembly Technology and DFA based fuzzy technology. Although they have patched some problems in mechanical design, they can’t fundamentally solve these problems as a post-modifying method. In this paper, a new design method form the assembly level is proposed, which breaks though the traditional design mode. This method is to design a complete functional assembly by assembly structure based on biological theory. The details are as follows:(1) From the assembly level, the source of parts and nature of assembly are analyzed. The Mechanical Assembly Structure and Mechanical Assembly system are proposed. Besides, the similarity between Mechanical Assembly system and individual organisms is proved, which supplies theoretical support for subsequent study.(2) Based on the similarity between Mechanical Assembly system and individual organisms, this paper build up mechanical assembly structure gene theory. In biology, the gene model research started from the characters, and gradually established the biological gene theory. Based on the similarity, mechanical parts are taken as the characters of mechanical assembly structure gene. And a few key intermediate processes are established.(3)After the mechanical assembly structure gene modeling, this paper established the transcription mechanism and the reverse transcription mechanism. The transcription mechanism contains mechanical assembly structure gene, parametric feature tree, features and parts. The reverse transcription mechanism is an important part of this mechanism because it can enrich the gene bank. Besides, the establishment of this mechanism proves the Self-organization of mechanical assembly structure system.(4) In this paper, a new mechanical modeling method is designed, which is based on mechanical assembly structure gene. This method can guarantee better homology, manage the design information better and reduce repetitive designs.