Optimal Design Of Inner Planet Gear Reducer

Inner planet gear transmission is a relatively unique gear transmissionmodel, it has the advantages of compact structure, large bearing capacity, largetransmission ratio, high transmission efficiency, small volume and stablemovement etc. Based on the advantages, the inner teeth planetary gear reducer isgradually widely applied to national defense, mining, metallurgy, textile, liftingthe transport, light industry, chemical industry, food industry, instrumentmanufacturing and construction and other fields, and it gradually replace theexisting multi-stage cylindrical gear reducer, worm turbine reducer device andother types of reducer, at the same time it also pay more and more attention themajority of scholars to study.For inner planet gear transmission, internal and external gear meshing forceanalysis, and size changes as well as the calculation of rotary arm shaft andbearing force, this is one of the inner planetary gear reducer product designimportant problem. According to the high input shaft of the different situationsby analyzing the internal tooth plate and we get internal and external gearmeshing force size changes and the rotary arm shaft and bearing force.Inner planetary gear reducer motion design and structure design is the keypart of the inner teeth planetary gear transmission, the gear ratio is deduced tocalculate, the gear parameter calculation formula is listed, the basic parametersof gear reducer, transmission ratio, the center distance and gear tooth numberand modulus determination are analyzed. We also choice planetary bearing, anddesign the structure of output shaft and input shaft and the internal tooth plategeometric sizes.Based on the whole size and weight of the smallest for the target, give fullconsideration to all kinds of constraint conditions, and we provide the advancedoptimization method to the inner planetary gear reducer. We through establishobjective function and select appropriate design variables, and confirm theconstraints which are to have the factor of many issues to consider, geometric parameters, such as size, volume, interference of tooth profiles, assemblycondition, kinematics factors, mainly the transmission ratio, bearing capacityfactors, such as tooth surface contact fatigue strength, tooth root bending fatiguestrength. With MATLAB optimization toolbox of the inner teeth planetary gearoptimization design was carried out, in which satisfy the constraint conditions,the optimized inner planetary gear reducer and before the photograph iscompared, its volume is reduced significantly, which is illustrated in theMATALB optimization toolbox of MATLAB optimization tool, this method isfeasible to reduce the cost of products and to improve manufacturing economicbenefits,and it has considerable practical significance.Finally, with the inner planetary gear reducer CAD system the developmentof simple, through the Pro/E software powerful parametric3D modelingfunction, the parametric modeling technology was established by parts librarysystem. Through the implementation of template parts dimension driving, werealize the automatic generation of parts, which helps us to realize planetarygear reducer design automation, visualization and intelligence.