Parameterized Design for Cylindrical Shaft Tapered Screw Blades

摘要

Screw blade is the essential part of a screw conveyer. The design of large scale, multiple blades screw conveyer involves complicated calculation and repeated work, is low in accuracy and efficiency. With parameterized design as the guiding principle, this article discusses the mathematical model for the development of cylindrical shaft tapered screw blade, and provides a VB based parameterized automatic drawing design method that allows arbitrary division of the helix angle, on the platform of AutoCAD. Practical experience has shown that the method improves design efficiency and accuracy, and is simple and pragmatic.