Study On Parametric Design System Of The Twin-Screw Pulping Mechanism

As a latest pulping machine, the twin-screw pulping machine has many characters such as simple structure, higher refining, lower cost, less water consumption and lower pollution. However, traditional design methods are usually used in design of twin-screw pulping machine. Based on the powerful Pro/Engineer Wildfire 1.0 software, the parametric system for the twin-screw pulping mechanism is developed so as to improve the efficiency of design and to shorten the period of production development.Firstly, this thesis focuses on the research of the structure of twin-screw pulping mechanism, Furthermore, from the point of function, structure and the choice, takes the design of the main parts.Design process is analyzed from the point of system design, and then the system function models and information models are built separately.During the development of the parametric design system, the thesis presents the method of parametric design based on the 3D model. Based on the 3D model created by Pro/Engineer Wildfire 1.0, we build a series of design parameters. Parametric program developed by Pro/TOOLKIT and VC++ searches the design parameters and modifies the parameters. According to the parameters, 3D model is generated. The system can compute the space clearance by the volume computable function of the Pro/E. The thesis develops the man-machine mutual interface. The screw spline database is also built by ACCESS.The parametric design system of the twin-screw pulping mechanism can develop a series of parts with similar structure and different size. The research of the thesis has a reference on the parametric design of the congener machines.