Research On Parametric Design System Of IKV Screw For Extruder

The plastics products have been widely applied in China. The increase of the plastics products droved the development of plastic machinery industry. Extrusion is the most important method of plastic processing. The plasticating system is the key in the design of extrusion equipment. The structure and geometry design of the screw straightly affect extrusion process. So screw is the key part of extruder system. A parametric design system of IKV screw was developed, with the help of this system we can determine the parameters of screw and carry out the parametric design based on extrusion theory.Design of this system comes down to technology of several fields, including characteristics of plastic processing, screw design, computer software and hardware and so on. When designing the system, the user interface was developed under popular circumstance of Visual Basic6.0, drawing system was finished under Solidworks and screw parameters' database was done under Access 2003. Screw parameters that were saved in the table of Access were taken when drawing. The whole system has a friendly using interface.The system can be used in many aspects. Firstly, it can be used for a CAD extrusion system of screw. With the help of this systemthe developing cycle would be shortened. Secondly, it can be used as a teaching software. By using screw parameters selection, screw checking and help modules, students can be instructed to design screw, and improve efficiency. Finally, the system can be taken apart as separate parametric drawing system by which the program will be run under Solidworks, automatic drawing will replace handwork so that the efficiency can be improved.The system runs steadily with good communication, which achieves what we anticipated.