Study on the Load Characteristics of the Planetary Gear Transmission System with Addendum Modification While Considering Errors by Xu Pengpeng, Chen Lifeng, Zhao Yingjun

Subjects: “…Addendum modification gear…”
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Coeficiente de corrección en engranajes cilíndricos como factor de conversión entre sistemas AGMA e ISO. // Addendum modification coefficient as conversion factor of cylindrical gears in AGMA system to ISO standards. by G. González Rey, P. Frechilla Fernández, R. José García Martín

“…</p><p><br />Palabras claves: geometría de engranaje cilíndrico, coeficiente de corrección, conversión AGMA a ISO</p><p>________________________________________________________________________________</p><p>Abstract<br />Definitions and recommendations associated to the addendum modification coefficient are presented. Examples, based on<br />author’s experiences in the analysis, recovery and conversion of helical and spur gears in AGMA system to ISO standards show<br />the advantage of application of the addendum modification coefficient in the solution of practical problems and rational<br />calculation of gears.…”
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Modification Coefficient Optimization of Series Gear Mechanism based on Multi-objective Genetic Algorithm NSGA-Ⅱ by Li Yaodong, Zhang Min, Miao Pu, Cao Zhongchen, Wang Jiawen

“…In order to rationally allocate modification coefficients of a series gear mechanism,a optimization model based on multi-objective genetic algorithm is set up. …”
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Research and Practice of Surveying and Mapping for Failed Large Modulus Cylindrical Gear by Ben Daochun

“…It concludes that modulus of wear gear can be accurately calculated based on the mean value of length difference for cross- tooth normal line,pressure angle can be determined based on the theory of alveolar bottom size,and the addendum helix angle can be estimated by the auxiliary template,thus the helix angle of helical gear is deduced. …”
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Influence of Gear Geometry Factors on the Elastohydrodynamic Lubrication Properties of A Gear Transmission by 卢立新, 阙师鹏, 蔡莹, 张和豪

“…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.…”
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Design Method of High Speed Ratio Planetary Gear Transmission（NGWN（Ⅱ））Considering Efficiency and Dynamics Performance by Wang Jianxiang, Qin Datong

“…Aiming at the problem of the low efficiency of NGWN-type planetary gear transmission with high speed ratio,the low-loss gear design that is optimizing modification coefficients and addendum coefficients simultaneously,reducing the contact ratio to reduce the mesh power loss can be applied to improve the gear transmission efficiency obviously. …”
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Analysis of Relateel Slide Ratio for Gear Drive and Ways of Advancing Wayr load capacity by Yang Jianzhong(31)

“…This paper thinks that the amount of related slide ratio has directive effects on the wear quantity of the low velocity gear and selecting different addendum modification coefficients, modules and addendum coefficients can change the amount of related slide ratio by the theoretic analysis of related slide ratio by the theoretic analysis of related slide ratio for gear drive and the calculation of related slide ratio for several tooth shape parameters.It presents ways of advancing gear′s wear load capacity and corective selecting the addendum modification coefficient.…”
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Modelo matemático y procedimiento para la generación gráfica de los contornos de dientes de engranajes cilíndricos. // A mathematical model and procedure for graphic generation of... by G. González Rey, R. José García Martín, P. Frechilla Fernández

“…<br />A mathematical model based developed in coordinated polar and a computational procedure for graphic generation of tooth flanks in<br />external parallel-axis cylindrical involute gears are exposed. The mentioned model and procedure are able to consider the effect in<br />the tooth gear geometry of the addendum modification coefficient and the rack shaped tool used in the cutting of gear. …”
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Correlación automatizada de parámetros geométricos mediante contornos de bloqueo en engranajes cilíndricos con contacto exterior//Automatic correlation of geometric parameters by m... by Robert Hernández-Ortega, César A. Chagoyén-Méndez, Feliberto Fernández-Castañeda, Jorge L. Moya-Rodríguez

“…This way it was achieved the automatic correlation of the geometric parameters and a blocking<br />contour construction without the designer's intervention that it shows the values of the addendum modification coefficients of the wheels that can be used.…”
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直齿圆柱齿轮变位系数的优化选择 by 梁华琪

“…Based on the evaluation of the influnce of the addendum modification coefficient on the surface durability, bending strength, scuffing resistance and wear resistance of spur gear, the mathematical model for the optimization of addendum modification coefficient is established and its solution proce dure is given.…”
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修形人字齿轮传动系统动态特性分析 by 尚鹏, 李建华, 王三民

“…The double helical gear addendum modification is achieved by using parabola instead of part of straight line on rack cutter blade.Through a predesigned parabolic function of transmission errors and combined with the equation of the rack cutter blade,the gear tooth meshing equation is derived and the gear tooth profile modification is realized.The bend-torsional coupling dynamics model of double helical gear and oscillatory differential equation of system are established.According to the double helical gear tooth contact analysis method（TCA）,the addendum modification and tooth profile modification transmission errors are obtained.Appling these errors to the kinetic equations as the error exercitation,double helical gear dynamic characteristic is studied.It is proven that tooth profile modification based on a predesigned parabolic function of transmission errors can decrease the dynamic factor of the double helical gear transmission.Thus,more effectively achieve the purpose of reducing vibration and noise.…”
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标准滚刀滚切变位直齿轮的刀架角计算 by 陈琰, 钱志良

“…Aiming at the adjustment of tool post angle in the process of spur gear hobbing,the model of the hob rolling spur gear with addendum modification is established,and the influence of the angle on the tooth profile and tooth thickness is calculated by using Matlab programming.The results show that the angle on the impact of the tooth profile is small,but significant on the tooth thickness.At the same time,the ideal tool post angle can be obtained by this method,so that the machining error of the spur gear with addendum modification can be minimum.…”
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天文望远镜传动直齿轮齿廓修形设计 by 冯锦平, 马文礼

“…Adopted high-order power function and short modification as the profile modification mode of spur gears used in astronomical telescopes,it can meet the necessity of the contact ratio and improve the static transmission error,and avoid stress concentration by eliminating addendum edge contacting with scraping.The pre-designed manufacturing transmission error curve is defined as profile modification parameter,the modified teeth faces are established based on virtual manufacturing process.The manufacture transmission error curve,the deformation error curve and the static transmission error curve are calculated by tooth contact analysis theory and finite element method,and the function of profile modification considering pitch errors is also derived under a certain torque.The static transmission errors and stress of pinion addendum are contrasted between ordinary spur gear and modified one in the simulation example.The simulated results verify that the effect of modification is obvious.…”
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直齿内齿轮应力灵敏度有限元分析 by 吉晓梅, 王松雷, 韩刚, 殷玉枫

“…Internal spur gear is the object of study and build finite element analysis modal.Solid model is built based on PRO/E,and finite element is built based on pro/mechanica.Make use of sensitivity analysis technology of pro/mechanica to study the main structure parameter witch affects internal spur gear stress.The graph of relation between internal spur gear and its structure parameters are obtained.The results indicated that increase the modification coefficient the stress of gear at the pitch line will be increased,and increase module,working pressure angle and addendum coefficient will decrease the stress of gear at the pitch line.…”
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渐开线内齿轮副相对滑动率的研究 by 章易程, 李蔚, 聂昌平

“…The relative sliding ratio formulas of an involute internal spur gear pair are developed. The influences of teeth number （transmission ratio）, module, addendum modification coefficient, center distance and so on are analyzed on the relative sliding ratio of each transmission type along the action line of.two gears.…”
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渐开线直齿内齿轮的轮齿变形挠度解析 by 康焱, 石照耀, 林家春, 姚文席

“…The first thing is to calculate the deformation of the loaded gear,when researching dynamic characteristic of the gear transmission and controlling the transmission quality.In order to deduce a simplified approximate formula to calculate the tooth deformation with deflection of the internal spur gear,the four main gear parameters which influence the tooth stiffness of the internal spur gear are selected:position of load action、number of teeth、addendum modification and tool edge radius,the research model of the gear using the table of the orthogonal design is scientifically choiced;Then,the tooth deformation with deflection of each research model is theoretical researched and practically calculated;At last,a simplified approximate formula to calculate the tooth deformation with deflection of the internal spur gear is deduced by Multivariate regression analysis,which base the nonlinear dynamics study of internal gear pair.…”
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汽车起动齿轮轴的精密塑性成形 by 孟令先, 马建民, 宋学进, 张元国

“…The start gear shaft is the key part of automobile starter,it is involutes small module internal gear with addendum modification;tooth surface of the internal gear is complex shape of five pleats.It is step shaft with H/D>6 in the outline.The shaft can’t be machined and plastic forming also is difficult.Meeting the needs of markets and improving comprehensive function of automobiles,the high efficiency precision forming technology method of single-step chinless-forming for internal gear tooth surface and external gear tooth is put forward based on analysis,study and repeated test.In the same time,a set of high accuracy die with simple novel structure and long service life is designed and manufactured.The advantages of the method have been verified that utilization ratio of material and production efficiency is high.For this reason,the method is profitable reference for producing the same type of complex shape gear.…”
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