Mechanical Structure Alignment Computational Experiment Technology Research

Assemble process is one of the most important impact factor for the performanceof precision machine of high-tech weapon. Additionally, the dynamic properties are thekey aspect to be improved for the assemble process of mechatronic products. However,the machine performance impact mechanism for the assembly process is not very clear,and current mechanism assembly mainly depends on the alignment of the technicians.For new developing mechanical products, especially high-tech weaponry in the militaryfield, the try-and-error alignment method is not feasible. This paper introduces the ideaof computational experiment into the assemble process of mechanical products. Anassemble process oriented computational experiment platform for mechanical productsis constructed, hence that effects of variations of the assemble process parameters on theproduct’s dynamic properties can be forecasted numerically. The research content andresults of the thesis are as follows:⑴The systematic and functional structure of the computational experimentplatform for assemble is constructed, key technology of which is studied.⑵Information expansion technology for current CAD model, whose assembleprocess information is excluded is studied. The mapping method from the assemblyprocess parameters to parameters of the dynamic simulation is researched, and theinformation data model of the computational experiment platform is developed.⑶Both the Monte Carlo and the orthogonal experiment method have beenintroduced and designed for computational platform. The Monte Carlo experiment isproposed for dimension-reduction of the orthogonal experiment and identification of thesensitive assembly process. The two experiment method provides supports for theanalytical data preparation and further analysis.⑷Customization and integration with commercial CAE software for thecomputing experimental platform of the assembly and adjustment process is developed.The simulation environment can be customized through the technique of seconddeveloping of the CAE software.⑸The prototype system of the computational experiment platform for assemblyprocess is developed. The application process is presented and the feasibility of thesystem is verified by several examples.