Research On The Web-based Virtual Assembly Technology

Virtual assembly is an important part of virtual manufacture technique, attracts concerns from both academic and industrial fields. Through building models of the product to simulate and analyse the assembly process, can find the assembly defaults as early as possible, shorten the product's design period, reduce product's costs, and improve the product's commercial competitive ability. Through virtual assembly operation training, increase techno-operators' understanding about practical assembly, get all-sided information about assemblies in time, with assembly knowledge, quickly, comprehensively, safely complete the assembly task.According to the characters of virtual assembly and web, this paper based on virtual realty modeling language VRML, combine with JavaScript program and ASP technology, builds web-based virtual assembly interactive environment, to browse and operate the assemblies.This paper studies the present status of virtual assembly and several key technologys and implement methods of virtual assembly system.The main contents of this paper are presented as follows:Analysis the main function that the virtual assembly system needs to achieve .The fundamental framework of virtual assembly system is presented and the ways to implement the functions are advanced as well.Classify the virtual assembly according to assembly design, discuss the problem about assembly rules, assembly relations and assembly planning, at the same time according to system's characteristic provides a assembly sequence about routes and layers, sum-up sensors nodes of VRML realize disassembly routes along with the directions of coordinate, a concept of imitating magnetic core to facilitate the self-alignment of assembled parts in virtual assembly is presented.Investigate the principle about events' translation in virtual scene, analyze how to control the objects in virtual scene with Java and ASP, with ASP realizes inquire about virtual scene's object dynamically.At the end of this thesis, treatise the method to modeling the assemblies, complete the virtual assembly system of horizontal piston pump, give the operation mode about it.The research work is a good search for the web-based virtual assembly to real practice.