Abstract
In this paper, the use of UG to the Automatic chain welding machine software for three-dimensional mapping, as well as their virtual assembly, UG Virtual assembly is one of the ASSEMBLY (assembly) module completed. UG virtual assembly bottom-up design (Bottom-up) design and top-down (Top-down) design of two kinds. The former of which refers to the design process, the first design of the individual components, on the basis of design for assembly generation. Assembly modeling that designers need to interact with a given component with the binding relationship between, and then automatically calculated by the UG system transfer matrix elements and the realization of virtual assembly. However, the interaction between a given component with the binding relationship is not only cumbersome, and when the co-ordination between the components were more easily bound by binding or improper error and so on. Only during the assembly parts can be found in the design is reasonable, and once problems are detected, it is necessary to re-design of parts, re-assembly and found that the issue of further changes to the design and Topdown is to avoid the above shortcomings can be easily and directly to ground Design. Virtual assembly will fundamentally change the traditional product design and manufacturing model, in the actual production, first in a virtual manufacturing environment to complete a virtual prototype instead of the actual product testing, its performance and eva luation of assembly, etc., so as to achieve the entire global optimum products to shorten product design and manufacturing cycles, reduce product development costs and improve products to respond quickly to market change.
Keywords：UG software Automatic chain welder Virtual assembly
