摘要:In this paper,used fuzzy mathematical theory and reliability design method,the fuzzy reliability mathematical model of involute planetary gear transmission and its calculation formula are set up,the reliability design method of contact fatigue strength,when fuzzy variables and random variables simultaneously exist in gear design,is studied and some calculating example are given.The results show that the fuzzy reliability design is feasible and practical.
摘要:On the base of study for Three ring drive with small teeth difference,the dynamic analysis mode is set up and its force analysis is performed,the mechanism of its transmission is pointed out and some important conclusion is carried out in this paper.The method of modeling in this paper is also of important meaning for other parallel mechanism.
摘要:This paper introduces the construction composition and transmission principle of the screw pair steel ball planetary transmission mechanism with a coaxal input and output axes,calculates their transmission ratio function,gives the geometrical conditions of loading steel balls even distributed in space,presents the construction parameter constraint equation of the internal and external screw surfaces under the conditions of the steel ball loaded through three points,and sets up the calculation method of counteraction forces on bearings under space forces action.
摘要:By considering the compressibility of the fluid and the effects of the contact ratio on tooth load,the thermal elastohydradynamic lubrication analysis for spur involute gears is given.A parametric study is conducted to investigate the effects of gear geometry factors(including the module,tooth number and addendum modification coefficient)on the lubrication properties of a gear transmission under the condition of given gear ratio and centre distance.The distriction of the central film thickness,pressure,temperature and coefficients of friction along the line of action is obtained.
摘要:Of all kinds of factors affecting on the form error of standard involute gear tooth profile,this paper mainly analyzed them which have relationship with gear meshing movements,and deduced the quantitive equations of moving parameters and the form error of the gear tooth profile.Based on them,two different hobbing movement models corresponding to the various kind of CNC(Computer Numerical Controlling)hobbing machine had been constructed.
摘要:The Symbolic solutions to the synthesis problem of planar four bar linkage function generator are proposed based on Wu Elimination and computer symbolic manipulating technique in this paper.A set of nonlinear polynomial equations are transformed into a set of equivalent triangularization equations by using the following operations:ordering of variables,grouping,reduction,forming basic set,and finding remainder terms etc.The closed form solutions of original equations are obtained.
摘要:In this paper all calculation formulas for designing the hob tooth form of instrument cicfular\|arc gear using profil normal line method are deduced,which has practical meaning in designing the hob tooth form with numerical method on computer.