Study On Self-adjusting Design Of Planetary Gear Mechanical Based On Uncertainties Of Planar Constraints

Planetary gear transmissive mechanism are widely used in various transmissive mechaines, for possessing the a lot of excellence ,Such as, wide rang of fransmission proporfion,compact sfrucfure , franfering biger power and good ability of ebduring over-loading.These machine are base on the sfrucfure of planar consfrainf, so that if can realize the expecf planar movemerf in advaml,This Rind of man-made planar consfrainf will resalf that planar planetary gear fransmissive mechanism system becomes indeserminafe stutically, so the performance of mechanical system is very sensitive to error in mechanism. In planetary year mechanism, mach planetary years are added to planetary year mechanism, meanwhile, various basic type planetary year assembled to realize many especial movement. All these will lead to ifs over-constraint go into more complex owning to the employment of the machine is effected by the condition, inside or outside including geometry constraint dynamic constraints and constraint coming from employing environment. In that if's impossible to ensure accurate planar characteristics of these consfrairts. For example, manufacturing error especially errors of profile and position, assembly errors, non-planar characteristics of dynamic parameters of components (such as the distribution of mass, inertia forces, etc.), deformation of components, external environments (such as the temperature, the field of the gravity), varying of the condition and so on, all that will disturb the planar constraints, and make the uncertain. For uncertainties of planar constraints,it will result that over? constraint becomes obstacle and influence smooth movement of a mechanical system,and bringabout a series of serious influence on the performance of the machines ,especial on their dynamic behavior and the quality,such as ,leading to the loading asymmetry among planetary gears ,the loading distributing aline the engagement of gear teeth line asymmetry ,celestial especial stress bringed by various error ,causing quiver ,implusion ,loud voice and reducing the life of the planetary gear mechanism. A especial and important way can be used to eliminate the influence of the panar error,that is designing a machine which have the capability of self? adjusting and self? adapt to outside environment.Therefor ,this articleanalysises the over? constraint of planetary gear mechanism and design self? adjust manchine,basing on the theory of panar constrint uncertain and aiming at eliminating the influence of planar constrint uncertain for the performance of employing. The main content of this paper is as follow. â‘ This paper analysis the theory of self? adjust mechainsm design baseing on the planar constrain uncertain. â‘¡The source of two type over? constraint and the influence of two type , over? constraint including paran theory over? constraint and interfance planar over? constraint ,planatry gear mechanism are emed analysised.Meanwhile ,this paper take different way to eliminate two different over? constraint for getting full scal self? adjust manchine.Therefor the self? adjust designing way of eliminate mechanical interface planar over? constraint can be get,through anaalysing basic gear system over? constraint and the wa of mechanical self? adjusting design. â‘¢The theory will be lay out of the principle which equality power mechanism adapt to ,through analyzing the influence of geometry size error for planetary gear mechanism.Thispaper lay out the way of eliminating the theory planar error. â‘£This paper draw out the principle of partition planetary gear structure muster and using thia muster to design or analysis the self? adjust mechanism for monople planetary gear system,multilevel planetary gear system.