摘要:Based on monotonicity analysis and computer symbolic manipulating technique, amethod for the opimum design of sleeve rollerchain is proposed in this paper, and the general form solution has been obtained by the proposed method without the need of numericaliteration.
摘要:In this paper four new parametercurvilinear nets of the involute helicoid aregiven. In addition two old nets are wellknown six nets. One means of gear machining.corresponds to one of parameter curvilinearnets (or mathematical model). Mathematicalmodels which describe accuratly flank structure for gear machining means be come the accurate and convenient mathematical tools.And what is more various translative matrixesamong six parameter curvilinear nets are give.These means and tools are more covenien toanalysis of precision and translative analysis.
摘要:In this paper, the problem of themain design constraints and the selection ofthe design parameter is discussed, a brief selection method of the design parameters isproposed and the reasonable parameter vainsis provided.
摘要:Test researches were made on thesimulate spalling damage of the tooth surfacesof 30 pairs of steel- rollers with 4 differentdepth of carburired layer. Based on these researches and the viewpoint of fatique, that isto consider the stress.amplitude and the characteristics of stress cycle as well as the reasonable matching between the contact stressfield and the’matetial strength field, this article further clarifies the stress which causesthe fatique-spalling, and derives thestrength conditional foumula used to preventthe spalling damage of the surface hardenedgears, according to the strength and the hardness of the ordinary materials after being surface hardened and to the approximate ralations among the relative strength limits.
摘要:This paper gives emphasis onstudying the movement, the efficiency, thepulse of output speed and the way of reducingthe pulse by analyzing the process of evolution of the continuously variable planetarytransmission.
摘要:Starting from elastic-dynamic equations of motion for flexspline, the paperanalyses the vibration of harmonic drives andindicates that the main reason is the workingprinciple and the status of flexspline, The vibration frequencies ate the resonant frequencies even times of the input rotative speed.Vibration of harmonic drives has direct effectson the moving stability of precise mechanicaltransmission chain.
摘要:In this paper, on the basis of thestructural character and transmission princiPles of tractional drive of planetary cone ring,formulas to calculate the tractional coefficientand transmissive factor were deduced, and anumerical method for determing the positionof rolling point of the traction drive and theacting point of radius force is presented. Thetheoretical curve of slide ratio of a variatorXM750 was calculated. In the end of this paper, which had been proved coincident essentially with the measured curve in experiment.’
摘要:By the theory of elastic thin plateand combining closly with industrial praCtice,the thesis solves the theoretical problem ondesigning the chuck of the hole grinding, aridpresents the simple design formula which’ isvery useful to the industrial producing.