Worm drive is a usual organ in the design of machine. Traditionally, the method of intensity emendation is often adopted according to the ratio of the gearing and the experience of the deviser and the parameter to be optimized has not been considered in the course of the design, so the design achieved is fit for the condition of the design, but it's not the most optimized. The three- dimension software Pro/E is adopted as a design platform, the software VC + + 6.0 is adopted to design interface and the software matlab6.5 is adopted to fulfil...