Tank Engine Visualization Of The Key Components Of Assembly Simulation System And Its Technology

Visual assembly simulation is one of basic key technology of the study of Design For Assembly (DFA). This paper present a kind of Pro/E based visual assembly simulation system, with which a product at a design stage can be pre-assembled through the simulation of process of assembly, the course of assembly process can be verified and improved. It can also dramatically show the assemblability of the product, therefore, the efficiency of assembly can be improved and the time and cost of assembly can also be reduced.To begin with, the demands of function of the system are analyzed in detail in this paper; 3 target layers of the system is presented and the function model of the system is designed. In this thesis, the whole frame of the visual assembly simulation system is setup and the working flow of the system is founded.Then, the key technology of the system are emphatically researched. First of all, the assembly model of DFA is established and the data structure of the model is proposed; In order to redesign product and structures and select optimized assembly plans, an assemblability evaluation system is constructed. Secondly, assembly process planning is analyzed, including assembly path planning and assembly sequence planning; and then the thesis brings forward the way of 11-tuple to represent the movement of assembly/disassembly of assembly elements. In the end, this paper makes an research on the technology of interference checking, raised a kind of algorithm of swift interference checking based on envelops bounding box decomposition, hence, the accuracy and efficiency of the algorithm is improved dramatically.Finally, the thesis take the mechanism of crankshaft and connecting rod in the engine as an example, develops visual assembly simulation system.