Study On The Double Crank Double Ring-plate-type Cycloid Drive Linked By Three Gears

The thesis is based on the national nature scientific fund organized project-double crank ring-plate-type cycloid drive which have high load-capacity, high transmission efficiency and high reliabilityAfter analyzing the merits and the shortcomings of involute-gear three-ring-plate drive and traditional cycloid drive each, we proposed the double crank ring-plate-type cycloid drive, which reserve the merits of the involute-gear three-ring-plate drive, such as omitting output system, good rigidity of output shaft, transmitting more torque. And the new type drive also reserve the merits of the traditional cycloid drive, such as more meshing teeth, the small angle between radial force and tangential force, hard surface of cycloid gear and pin-tooth. Beside, this new type drive overcoming the shortcomings of the ring-plate drives. Therefore, it is the first-line innovation in the worldIn order to realize four targets which include high load-capacity, high transmission efficiency, high reliability and the excellent dynamics performance, we thought over all the remands in the round and designed the rational structure of the double crank ring-plate-type cycloid drive. Through Comparing the traditional cycloid drive with the double crank ring-plate-type cycloid drive, we can find the difference in the drive form. The pin-gear goes round the fixed axis and the cycloid-gears go round the pin-gear planetly in the traditional cycloid drive. The cycloid-gears goes round the fixed axis and the pin-gears go round the cycloid-gear planetiy in the traditional cycloid drive.Basing on the force analyse of the traditional cycloid drive, we built the exact force analyse maths model of the double crank ring-plate-type cycloid drive, analysed the forces bom by the cycloid-gear, Ihe ring-plate and bearings exactly, and produced the software of force analyse. Applying the software, we analysed the foces of parts in the double crank ring-plate-type cycloid drive and caculated the intensity and the life of the parts. Comparing the results, we see the forces bom by the bearings reduce about half in the double crank ring-plate-type cycloid drive and the bearings' life increases naturely.According to the universal efficiency formula, we studied the efficiency formula ofthe double crank ring-plate-type cycloid drive and caculated the efficiency of themanufactured double crank ring-plate-type cycloid drive, which offered the theoretic reference to the efficiency experimentAfter the force alalyses, we carried through the parameter optimization design on the double crank ring-plate-type cycloid drive and produced the software of the parameter optimization design. Moreover, we also optimized the double crank ring-plate -type cycloid drive. Through comparing the optimization results between the traditional cycloid drive and the double crank ring-plate-type cycloid drive, we concluded the loading-capacity of the double crank ring-plate-type cycloid drive inceased once more than the traditional cycloid drive and achieved the expectant aim.