Motion Simulation And Optimization About Fewer Teethed Gear Of Transmission System

Fewer teethed gear transmission (z=2-10) as an replenishment of Involute Gear Transmission, with the advantages of big single-stage transmission ratio, compact construction and light in weight. Especially, it is suitable for the occasions of the small and medium-sized power, structure size is restricted and the big transmission ratio. At present, foreign motorcycle engines have had a mature application, our country also has attempted in the mopeds, fox example electric bicycles and other fields. Theoretical study is relatively small about fewer teethed gear transmission and data almost does not involve the gear which number of teeth is less than 8, which bring some difficulties to spread and apply the fewer teethed gear transmission. The gear transmission miniaturization, high speed and standardization was required in the modern industry, the study of Involute Gear Transmission of fewer teethed becomes more and more useful.The paper derive the fewer teethed involute gear and the derivation of the transition curve equation and determine the parameters based on fundamental law of tooth profile meshes and generating theory tooth root transition curve and the three-dimensional model was established by Pro/E software.On the base of Pro/E modeling, the strength and the natural frequency of the main parts of the fewer teethed gear of speed reducer was calculated by using ANSYS, and the vibration was analyzed. Finally, the fewer teethed gear transmission was optimized by multi-objective optimization method. it were compared with the preliminary design, the recommendations for the rationalization was provided for the design of fewer teethed gear mechanism.The Pro/E was used to design three-dimensional solid model, finite element analysis and the multipurpose optimal method was used to design gear transmission, the design defects was discovered and optimized before processing, thus improve the life, reliability and design quality of the fewer teethed gear transmission system, reduce design costs and shorten the development cycle, which has a certain practical significance.