Research Of 3D Products Transformative Design Based On Features And Dynamic Simulation

The paper is based on the environment of Pro/Engineer. At beginning, the author take a lot of time to study the technology of building virtual production model which is based on the parameter technology and diagnostic technology. After this work, the author lucubrate the character of building feature element with Pro/E and the principle of building feature element with Pro/Toolkit which is a quadratic tool of Pro/E. with the help of these work, the author analyse the improved means of building feature element with Pro/Toolkit by using the module of Family Table. At the same time, the writer also put forward a new method of building the bridge between the Pro/E and MFC, by this means, we improved the parameter ability of Pro/E. Through these works, the writer Resolves the problems on the realizing of building virtual production model which is based on the parameter technology and diagnostic technology by combining Pro/E and OOP technology.The paper also studies general assembly simulation, path plan, path process and something related under the environment of Pro/ENGINEER software in detail. The main goal is to show the whole assembly process of the product by means of visualization, to test the assembly capability by means of assembly sequence and path planning via interaction of human and computer, assembly collision detecting and so on, automatically generating the assembly path , so can obtain information feedback for product redesign. As a result, shortening the cycle of product design. In this project, the most important feature of this work is it has a better universal character, it means that it can be used on any model, and we also can adjust the path process of simulation and angel of view at well.First, the paper reviews thoroughly the literature and newly development on assembly simulation, top-down design, assembly modeling and assembly sequence planning at home and abroad. Based on them, It sketchily describes the thoughts and methods of the developing of the general assembly simulation software, which is the prototype of software developed upon the paper. The software is to simulate the assembly process of the product, in which the assembly model described by hierarchical tree is the fundamental and the resultof the assembly sequence and path planning by means of disassembly via input through human and computer interactionProper assembly modeling is the base of the whole assembly simulation system software. By programming developed by user, the paper detailed researches the expressing method and identifying method of the component in the hierarchy assembly model, the description of three Dimension position and orientation of the components in the product, and topological graph of mating relationship among the components. All these lay a solid foundation for the following research on assembly sequence and path planning and assembly process simulating.Based on all these knowledge, the writer developed a general assembly simulation software by combing Pro/E and data-based technology, the most important feature of this software is it has a better universal character, it means that it can be used on any model, and we also can adjust the path process of simulation and angel of view at well, and it has a very precious value in engineer design.