Research and implementation of visibility evaluation technology for assembly work based on secondary development of DELMIA

As an important process to determine the quality of final products, assembly is of great significance in mechanical manufacturing. Virtual assembly simulation is an assembly inspection technology, which can find out the existing ergonomics and craft problems in advance to avoid unnecessary loss during the practical assembly. However, the current research of virtual assembly is basically confined to the stage of program control and physical simulation, and rarely consider humancomputer interaction operations simulation, especially the visibility factor. In this paper, an automatic evaluation method for visibility is proposed for products assemblability based on the secondary development of DELMIA. First, a set of scoring criteria and evaluation algorithms are established based on the ergonomics theory, and an evaluation module is built based on the image processing and MATLAB programming. Then, the visibility evaluation module is embedded into DELMIA software by using the CAA based redevelopment technology. Finally, the assembly simulation of a mechanical product is adopted to validate the proposed technology. The results show that the automatic evaluation system provides feasible solutions for visibility assembly of complex products.