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Investigation of the optimum differential gear ratio for real driving cycles by experiment design and genetic algorithm 被引量:1
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作者 AHMED Aboud 赵长禄 张付军 《Journal of Beijing Institute of Technology》 EI CAS 2015年第1期65-73,共9页
Experiment statistical method and genetic algorithms based optimization method are used to obtain the optimum differential gear ratio for heavy truck that provides best fuel consumption when changing the working condi... Experiment statistical method and genetic algorithms based optimization method are used to obtain the optimum differential gear ratio for heavy truck that provides best fuel consumption when changing the working condition that affects its torque and speed range. The aim of the study is to obtain the optimum differential gear ratio with fast and accurate optimization calculation without affecting drivability characteristics of the vehicle according to certain driving cycles that represent the new working conditions of the truck. The study is carried on a mining dump truck YT3621 with 9 for- ward shift manual transmission. Two loading conditions, no load and 40 t, and four on road real driving cycles have been discussed. The truck powertrain is modeled using GT-drive, and DOE -post processing tool of the GT-suite is used for DOE analysis and genetic algorithm optimization. 展开更多
关键词 heavy trucks fuel consumption OPTIMIZATION design of experiment genetic algo-rithm differential gear ratio
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Variable Gear Ratio Control Using Vehicle Body Slip Angle
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作者 Takahiko Yoshino Hiromichi Nozaki 《Engineering(科研)》 2014年第8期439-448,共10页
Vehicles with variable steering characteristics have long been studied and compared with those having typical fixed gear ratio steering, and the variable gear ratio properties are reported to have improved maneuverabi... Vehicles with variable steering characteristics have long been studied and compared with those having typical fixed gear ratio steering, and the variable gear ratio properties are reported to have improved maneuverability and stability in high-speed lane changes and on slippery low-friction road surfaces. However, it is not clear how gear ratios should be set for individual vehicle characteristics. Therefore, the present study has investigated a variable steering gear system using body slip angle feedback for the purpose of improved maneuverability and stability in the critical cornering range and upwards, in excess of the critical limit, and into the countersteer range. The results of a driving simulator experiment show that the steering effect improves and maneuverability and stability increase in the critical cornering range and upwards, in excess of the critical limit, and into the countersteer range by applying linear-variable control to the steering ratio from a body slip angle of 5?. This result is seen both in double lane changes, such as in hazard avoidance, and in J-turns with long drifting. Moreover, it shows an improvement in drift controllability through prompt countersteering. Overall, the present system can enhance the driver’s hazard avoidance capability. 展开更多
关键词 Motion CONTROL AUTOMOBILE Vehicle Dynamics MANEUVERABILITY Variable gear ratio
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EFFECT OF INVOLUTE CONTACT RATIO ON THE DYNAMIC PERFORMANCE OF SPUR GEAR WITH NOTOOTH PROFILE MODIFICATION 被引量:13
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作者 Wang JianhongZhang QingweiRen HengbinInstitute of Mechanical Engineering,Chongqing University,Chongqing 400044, China 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2003年第4期417-419,共3页
The effect of involute contact ratio on the torsional vibration behavior ofspur gear-pair is studied analytically through a mass-spring model. The tooth stiffness in model notonly has a relation with time, as many pri... The effect of involute contact ratio on the torsional vibration behavior ofspur gear-pair is studied analytically through a mass-spring model. The tooth stiffness in model notonly has a relation with time, as many prior studies presented, but, more important, with involutecontact ratio (ICR) as well. The ICR embodies its impact on the spur gear's dynamic performancethrough changing the proportion of tooth stiffness when there are n+1 teeth in contact to toothstiffness when there are n teeth in contact. A couple of curves about impact of ICR on the gear'sdynamic performance are presented, and they clearly demonstrate that the model can accuratelydescribe the effects of ICR on dynamic transmission error. Finally, some conclusions useful toreduce vibration and noise of gear-pair are proposed. 展开更多
关键词 Spur gear DYNAMIC Involute contact ratio Perturbation method
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COMMON DEFINITION FOR END-SURFACE CONTACT RATIO OF GEARS AND ITS APPLICATIONS 被引量:4
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作者 TanWeiming 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2004年第4期595-597,共3页
Common definition and calculating expressions of end-surface contact ratiofor all type of gears are put forward, and with calculation expressions for involute gears,micro-segments profile gears, and sine-curved profil... Common definition and calculating expressions of end-surface contact ratiofor all type of gears are put forward, and with calculation expressions for involute gears,micro-segments profile gears, and sine-curved profile gears being discussed. The end-surface contactratio of gears is defined as the ratio of the action angle (the rotation angle of gear from gear-into gear-out for one pair of teeth) to the rotation angle per pitch (or central angle per tooth).According to the theory of gearing, equation of the meshing line can be deduced from the toothprofiles of basic rack. Having obtained the equation of the meshing line, and being given theaddendum outline of the gears, the contact ratio can be calculated with the calculation expressions.For the involute gears, this definition has same effect as the well-known definition: ratio of thecontact line to the base pitch. This definition of contact ratio is also suitable to othernon-involute gears, such as micro-segments profile gears, sine-curved profile gears, and can givemore reliable results. 展开更多
关键词 gearS Contact ratio Action angle Rotation angle per pitch Micro-segmentsgears Sine-curved profile gears
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Calculation method of sliding ratios for conjugate-curve gear pair and its application 被引量:3
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作者 梁栋 陈兵奎 高艳娥 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第3期946-955,共10页
The calculation method of sliding ratios for conjugate-curve gear pair, generated based on the theory of conjugate curves,is proposed. The theoretical model of conjugate-curve gear drive is briefly introduced. The gen... The calculation method of sliding ratios for conjugate-curve gear pair, generated based on the theory of conjugate curves,is proposed. The theoretical model of conjugate-curve gear drive is briefly introduced. The general calculation formulas of sliding ratios are developed according to the conjugate curves. The applications to the circular arc gears based on conjugate curves and the novel involute-helix gears are studied. A comparison on the sliding coefficient with the conventional corresponding gear drive is also carried out. The influences of gear parameters such as spiral parameter, gear ratio and modulus on the sliding ratios of gear drive are discussed. Brief description of manufacturing method for conjugate-curve gear pair is given. The research results show that the sliding ratios of gear pair become smaller with the increase of spiral parameter and gear ratio, respectively. And it will be greater with the increase of modulus for the tooth profiles. The meshing characteristics of conjugate-curve gears are further reflected and the optimization design of tooth profiles with high performance may be obtained. 展开更多
关键词 conjugate-curve gear conjugate curve sliding ratio manufacturing method
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Smooth Operation with Manufacture Error and Modification of Cycloidal Pin Gearing
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作者 李充宁 《International Journal of Mining Science and Technology》 SCIE EI 1998年第1期66-68,共3页
The paper considers the modification or the manufacture error of cycloidal gear, then analyzes the relationship of pin circle meshed with the modified cycloidal gear, discuases the amount of error that leads to destro... The paper considers the modification or the manufacture error of cycloidal gear, then analyzes the relationship of pin circle meshed with the modified cycloidal gear, discuases the amount of error that leads to destroying conjugate action and results in the changes of tbe instantaneous velocity ratio and so as to affect the smooth operation of cycloidal pin gearing. The idea of the relationship between amount of modification aud manufacture error and the smooth operation can be gotten from the curve diagrams of the instantaneous velocity ratio. Therefore, the directions for improving the reature of the cycloidal pin gear transmission are clear. 展开更多
关键词 instantaneous VELOCITY ratio cycloidal PIN gear engaging MANUFACTURE ERROR
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Configuration Synthesis and Performance Analysis of 9‑Speed Automatic Transmissions 被引量:1
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作者 Huafeng Ding Changwang Cai +2 位作者 Ziming Chen Tao Ke Bowen Mao 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2020年第3期97-117,共21页
Current research of automatic transmission(AT)mainly focuses on the improvement of driving performance,and configuration innovation is one of the main research directions.However,finding new configurations of ATs is o... Current research of automatic transmission(AT)mainly focuses on the improvement of driving performance,and configuration innovation is one of the main research directions.However,finding new configurations of ATs is one of the main limitations of configuration innovation.In the present study,epicyclic gear trains(EGTs)are applied to investigate mechanisms of 9-speed ATs.Then four kinematic configurations are proposed for automatic transitions.In order to evaluate the performance of proposed mechanisms,the lever analogy method is applied to conduct kinematic and mechanical analyses.The power flow analysis is conducted,and then transmission efficiencies are calculated based on the torque method.The comparative analysis between the proposed and existing mechanisms is carried out where obtained results show that proposed mechanisms have reasonable performance and can be used in ATs.The prototype of an AT is manufactured and the speed test is conducted,which proves the accuracy of analysis and the feasibility of proposed mechanisms. 展开更多
关键词 Automatic transmission Epicyclic gear train Lever analogy gear ratio Torque method
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Application of the Latching Control System on the Power Performance of a Wave Energy Converter Characterized by Gearbox,Flywheel,and Electrical GeneratorGustavor
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作者 Gustavo O.Guarniz Avalos Milad Shadman Segen F.Estefen 《Journal of Marine Science and Application》 CSCD 2021年第4期767-786,共20页
The latching control represents an attractive alternative to increase the power absorption of wave energy converters(WECs)by tuning the phase of oscillator velocity to the wave excitation phase.However,increasing the ... The latching control represents an attractive alternative to increase the power absorption of wave energy converters(WECs)by tuning the phase of oscillator velocity to the wave excitation phase.However,increasing the amplitude of motion of the floating body is not the only challenge to obtain a good performance of the WEC.It also depends on the efficiency of the power take-off system(PTO).This study aims to address the actual power performance and operation of a heaving point absorber with a direct mechanical drive PTO system controlled by latching.The PTO characteristics,such as the gear ratio,the flywheel inertia,and the electric generator,are analyzed in the WEC performance.Three cylindrical point absorbers are also considered in the present study.A wave-to-wire model is developed to simulate the coupled hydro-electro-mechanical system in regular waves.The wave energy converter(WEC)performance is analyzed using the potential linear theory but considering the viscous damping effect according to the Morison equation to avoid the overestimated responses of the linear theory near resonance when the latching control system is applied.The latching control system increases the mean power.However,the increase is not significant if the parameters that characterize the WEC provide a considerable mean power.The performance of the proposed mechanical power take-off depends on the gear ratio and flywheel.However,the gear ratio shows a more significant influence than the flywheel inertia.The operating range of the generator and the diameter/draft ratio of the buoy also influence the PTO performance. 展开更多
关键词 Wave energy converter Point absorber Mechanical power take-off FLYWHEEL gear ratio Latching control
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Multi-objective Optimization of a Two-Stage Helical Gearbox to Improve Efficiency and Reduce Height
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作者 Tran Quoc Hung Truong Thi Thu Huong 《Journal of Environmental Science and Engineering(B)》 2023年第5期236-247,共12页
The goal of this research is to look at multi-target optimization of a two-stage helical gearbox in order to determine the best key design elements for reducing gearbox height and enhancing gearbox efficiency.To do th... The goal of this research is to look at multi-target optimization of a two-stage helical gearbox in order to determine the best key design elements for reducing gearbox height and enhancing gearbox efficiency.To do this,the method known as Taguchi and GRA(Grey Relation Analysis)were used in two stages to address the problem.The single-objective optimization problem was addressed first to close the gap between variable levels,and then the multi-objective optimization problem was solved to determine the best primary design variables.The first and second stage CWFWs(Coefficients of Wheel Face Width),ACS(Permissible Contact Stresses),and first stage gear ratio were also calculated.The study’s findings were utilized to identify the best values for five critical design aspects of a two-stage helical gearbox. 展开更多
关键词 Helical gearbox multi-objective optimization gear ratio gearbox height gearbox efficiency.
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ANALYSIS OF TRANSMISSION CHARACTERISTICS OF COSINE GEAR DRIVE 被引量:8
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作者 WANG Jian LUO Shanming CHEN Lifeng CHEN Lei HU Huarong 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2008年第3期94-98,共5页
Based on the mathematical model of a novel cosine gear drive, a few characteristics, such as the contact ratio, the sliding coefficient, and the contact and bending stresses, of this drive are analyzed. A comparison s... Based on the mathematical model of a novel cosine gear drive, a few characteristics, such as the contact ratio, the sliding coefficient, and the contact and bending stresses, of this drive are analyzed. A comparison study of these characteristics with the involute gear drive is also carried out. The influences of design parameters including the number of teeth and the pressure angle on the contact and bending stresses are studied. The following conclusions are achieved: the contact ratio of the cosine gear drive is about 1.2 to 1.3, which is reduced by about 20% in comparison with that of the involute gear drive. The sliding coefficient of the cosine gear drive is smaller than that of the involute gear drive. The contact and bending stresses of the cosine gear drive are lower than those of the involute gear drive. The contact and bending stresses decrease with the growth of the number of teeth and the pressure angle. 展开更多
关键词 gear drive Cosine profile Contact ratio Sliding coefficient Stress
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Optimisation of Effective Design Parameters for an Automotive Transmission Gearbox to Reduce Tooth Bending Stress 被引量:1
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作者 Mehmet Bozca 《Modern Mechanical Engineering》 2017年第2期35-56,共22页
Optimisation of effective design parameters to reduce tooth bending stress for an automotive transmission gearbox is presented. A systematic investigation of effective design parameters for optimum design of a five-sp... Optimisation of effective design parameters to reduce tooth bending stress for an automotive transmission gearbox is presented. A systematic investigation of effective design parameters for optimum design of a five-speed gearbox is studied. For this aim contact ratio effect on tooth bending stress by the changing of contact ratio with respect to pressure angle is analysed. Additionally, profile modification effects on tooth bending stress are presented. During the optimisation, the tooth bending stress is considered as the objective function, and all the geometric design parameters such as module, teeth number etc. are optimised under two different constraints, including tooth contact stress and constant gear centre distance. It can be concluded that higher the contact ratio results in a reduced tooth bending stress, while higher the pressure angle caused an increase in tooth bending stress and contact stress, since decreases in the contact ratio. In addition, application of positive profile modification on tooth reduces tooth bending stress. All of the obtained optimum solutions satisfy all constraints. 展开更多
关键词 Optimisation gearS Pressure Angle CONTACT ratio BENDING STRESS CONTACT STRESS
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Study for the Forming Principle of Logix Gear Tooth Profile and Its Mesh Performance 被引量:3
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作者 Lee Leckseng Linda Lee 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期91-92,共2页
In recent years, a new type of gear named Logix gea r was developed. Actually, the tooth profile of this new type of gear is composed of lots of micro-segment involute curves, and on the profile, there exist lots of p... In recent years, a new type of gear named Logix gea r was developed. Actually, the tooth profile of this new type of gear is composed of lots of micro-segment involute curves, and on the profile, there exist lots of points, which their relative curvatures are equal to zero. This can result in the sliding coefficient smaller between two meshed Logix gears, and the mesh ch aracteristic becomes almost rolling transmission from sliding transmission accor dingly. So, this new type of gear has lots of advantages such as higher contact intensity, longer useful life and can easily realize power transfer of bigger tr ansmission ratio than standard involute gear. Study results showed that the cont act fatigue strength is 3 times larger, the bend fatigue strength is 2.5 times l arger, and the minimum tooth number can be decreased to 3, much smaller than tha t of standard involute gear. In this paper, following studies had been done: 1) The formation principle of Logix gear tooth profile was studied. The theoreti cal models describing the geometrical formations of this type of gear and its re lative Logix rack had been deduced. 2) While cutting a Logix gear, its tooth profile is decided by its normal tooth profile of Logix rack. Besides the basic parameters of standard involute gear, L ogix rack has its own specific parameters such as preliminary pressure angle, re lative pressure angle, and preliminary referential circle radius etc. So, the in fluence of connatural parameters of Logix rack on the tooth profile of Logix gea r had been farther studied. Reasonable selection for these parameters had been d iscussed. 3) Several kinds of transition curves for gear’s tooth profile had been introdu ced, its selection used by Logix gear had been described, and also its mathemati cal description model had been deduced. 4) The mesh theories of Logix gears had been developed. It had been proved that the transmission performance between Logix gears coincides with E-W theorem as that of ordinary standard involute gears. The formula calculating superposition coefficient was deduced according to its definition. Different from standard inv olute gears, the parameter of gear number has no effect on the superposition coe fficient of the Logix gears. Accordingly, bigger ratio transmission can be acqui red by means of decreasing the gear number, and its minimum gear number can be r eached to 3, much smaller than the minimum gear number of ordinary standard invo lute gear: 14~17. This is very important to realize the miniaturization of prod uction design. 5) The CAD special software was developed to design all kinds of Logix gears, an d a solid design example was offered. To sum up, by means of above study, the system info about Logix gear had been de veloped and enriched. This has most significant impact on its widely promotion a nd practical application, on the improvement of carrying capacity, miniaturizati on, and life of kinetic transmission products. 展开更多
关键词 Logix gear forming principle mesh performance big transmission ratio
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串并联混合动力变速箱挡位对整车性能的影响 被引量:2
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作者 孙永正 韩志玉 +1 位作者 刘华 徐梓峰 《同济大学学报(自然科学版)》 EI CAS CSCD 北大核心 2024年第1期115-121,共7页
针对串并联混合动力车辆变速箱选型匹配问题,采用试验设计(DOE)方法选取变速箱最优速比并分析挡位对整车性能的影响。建立了整车仿真模型和控制策略并进行了台架验证,分析了该混合动力系统3种变速箱挡位配置对车辆的加速性能、爬坡性能... 针对串并联混合动力车辆变速箱选型匹配问题,采用试验设计(DOE)方法选取变速箱最优速比并分析挡位对整车性能的影响。建立了整车仿真模型和控制策略并进行了台架验证,分析了该混合动力系统3种变速箱挡位配置对车辆的加速性能、爬坡性能和整车油耗的影响。仿真结果表明,挡位的增多可以提高整车动力性,降低整车对电池放电功率及电池容量的需求,但是对整车油耗改善较小。进一步仿真结果表明,即使改善发动机低转速中高负荷区域的燃油消耗率,变速箱挡位数对整车油耗的影响也不大。 展开更多
关键词 串并联混合动力 变速箱速比寻优 整车控制 性能仿真
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EFFICIENCY OF INVOLUTE GEAR DRIVES WITH UNDERCUT PINIONS USED IN WRIST WATCHES
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作者 俞明 《Journal of China Textile University(English Edition)》 EI CAS 1994年第2期61-66,共6页
In wrist watches gear drives with undercut pinions are used. Those pinions have got a tooth number as few as 5—7. The efficiency of such gear drives is important because of the limited energy supply. The mean efficie... In wrist watches gear drives with undercut pinions are used. Those pinions have got a tooth number as few as 5—7. The efficiency of such gear drives is important because of the limited energy supply. The mean efficiency of gear drives can be expressed as E<sub>m</sub>=1/(φ<sub>2</sub>-φ<sub>1</sub>)(integral from φ<sub>1</sub> to φ<sub>2</sub>(E(φ)dφ)) in which <sup>0</sup><sub>1</sub>, <sup><</sup>sub>2</sub> are the approach angle and the recess angle respectively. In the discussion we assume that the friction coefficient between the two tooth flanks is constant because the sliding speed is relatively low in wrist watches and the main purpose is to find out the relation between gear parameters and its efficiency rather than to calculate the exact value of the efficiency. In normal conditions <sup>o</sup><sub>1</sub> and <sup>o</sup><sub>2</sub> can be found from the gear geometry without much difficulty. However when the pinion is an undercut one we have to first find the forming diameter where the involute profile starts. In this paper equations for the computation of the efficiency and the contact ratio of those gear drives are discussed. 展开更多
关键词 watches INVOLUTE gears efficiency design contact ratio.
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Helix Angle Effect on the Helical Gear Load Carrying Capacity
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作者 Mehmet Bozca 《World Journal of Engineering and Technology》 2018年第4期825-838,共14页
The aim of this study is to investigate the helix angle effect on the helical gear load carrying capacity, including the bending and contact load carrying capacity. During the simulation, the transverse contact ratio ... The aim of this study is to investigate the helix angle effect on the helical gear load carrying capacity, including the bending and contact load carrying capacity. During the simulation, the transverse contact ratio is calculated with respect to the constant pressure angle. By changing the helix angle, both the overlap contact ratio and total contact ratio are calculated and simulated. The bending stress and contact stress of a helical gear are calculated and simulated with respect to the helix angle. Solid (CAD) modelling of a pinion gear was obtained using SOLIDWORKS software. The analytically obtained results and finite elements method results are compared. It is observed that increasing the helix angle causes an increase of the contact ratio of the helical gear. Furthermore, increasing the contact ratio reduces the bending stress and contact stress of the helical gear. However, with a constant transverse contact ratio, it is possible to improve the total contact ratio depending on the helix angle. It is concluded that a higher helix angle increases the helical gear bending and contact load carrying capacity. 展开更多
关键词 HELICAL gear HELIX Angle CONTACT ratio BENDING STRESS CONTACT STRESS
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面齿轮轴间限滑差速器构型设计与性能分析
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作者 彭先龙 吴桂晨 《机械传动》 北大核心 2024年第8期9-17,共9页
为解决现有轴间限滑差速器限滑能力有限、构型复杂且加工困难等问题,提出了一种新型的面齿轮轴间限滑差速器设计方案。对差速器构型原理和运动特性进行理论分析,建立了面齿轮轴间限滑差速器的力学平衡方程和锁紧系数理论模型;基于面齿... 为解决现有轴间限滑差速器限滑能力有限、构型复杂且加工困难等问题,提出了一种新型的面齿轮轴间限滑差速器设计方案。对差速器构型原理和运动特性进行理论分析,建立了面齿轮轴间限滑差速器的力学平衡方程和锁紧系数理论模型;基于面齿轮加工成型原理和轴间差速器工作特性,设计搭建了三维实体模型和Adams虚拟样机模型,并利用Adams仿真软件进行了多体动力学分析。结果表明,面齿轮轴间限滑差速器对前后轴的锁紧系数分别可达到6.5和5;在良好路面行驶时,前后轴输出转矩与预设转矩分配比40∶60基本吻合;在双附着系数路面行驶时,可迅速锁紧打滑侧车轴并将转矩更多分配至未打滑侧车轴,实现转矩分配的自动调节,对前后轴的最大转矩分配分别可达73%和79%。结果验证了面齿轮轴间限滑差速器的可行性,为面齿轮轴间限滑差速器的设计应用提供了依据。 展开更多
关键词 限滑差速器 轴间差速器 面齿轮 锁紧系数 动力学仿真
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一种新型高阶齿扇齿条副的啮合性能分析
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作者 丁国龙 李天一 +1 位作者 程铖 向华 《机械设计与制造》 北大核心 2024年第10期345-351,共7页
目前汽车转向器非圆齿轮副普遍采用C^(0)阶连续的变传动比曲线,其齿扇齿廓有尖点,不光滑,速度和加速度有突变,传动不够平顺。为此,以四次多项式为基函数设计C^(2)阶连续的变传动比曲线,采用齿廓法线法求解不同连续阶的齿扇齿廓,基于有... 目前汽车转向器非圆齿轮副普遍采用C^(0)阶连续的变传动比曲线,其齿扇齿廓有尖点,不光滑,速度和加速度有突变,传动不够平顺。为此,以四次多项式为基函数设计C^(2)阶连续的变传动比曲线,采用齿廓法线法求解不同连续阶的齿扇齿廓,基于有限差分法推导齿廓曲率的计算公式,对比分析C^(0)、C^(1)、C^(2)阶传动比曲线的齿廓结构特点、传动中的速度与加速度的变化特点以及其齿廓光滑性。仿真结果表明汽车转向器非圆齿轮副传动比曲线的连续阶越高,其齿廓越光滑。 展开更多
关键词 汽车转向器 非圆齿轮 传动比曲线 连续 齿廓光滑
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高接触比螺旋锥齿面修形方法及动态特性研究
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作者 李建国 徐国胜 《机床与液压》 北大核心 2024年第1期98-104,共7页
为抑制高接触比螺旋锥齿轮传动的振动,提出一种新的高阶齿面修形方法。根据高接触比螺旋锥齿轮的啮合特点,提出一种新的修形曲线,采用辅助齿面修形方法生成高阶修形螺旋锥齿轮。在考虑齿变形的情况下,计算了高阶修正弧齿锥齿轮传动的载... 为抑制高接触比螺旋锥齿轮传动的振动,提出一种新的高阶齿面修形方法。根据高接触比螺旋锥齿轮的啮合特点,提出一种新的修形曲线,采用辅助齿面修形方法生成高阶修形螺旋锥齿轮。在考虑齿变形的情况下,计算了高阶修正弧齿锥齿轮传动的载荷传递误差和啮合冲击,在此基础上建立了降低高接触比螺旋锥齿轮传动的载荷传递误差和啮合冲击的优化模型。仿真结果表明:与二阶修形弧齿锥齿轮相比,高阶齿面修形方法不仅可以有效降低高接触比螺旋锥齿的载荷传递误差、啮合冲击和动态负载系数,而且可以提高其在全速范围内的动态性能。 展开更多
关键词 高接触比 螺旋锥齿轮 高阶齿面修形 载荷传递误差
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高阶变性Pascal蜗线齿轮生成机制分析 被引量:1
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作者 陶德华 李凝 +2 位作者 宣仲义 王笑 郑丽娟 《西华大学学报(自然科学版)》 CAS 2024年第3期45-53,共9页
为满足多样性变速传动的设计要求,文章在研究Pascal蜗线非圆节曲线的基础上,通过引入高阶和变性原理,建立了高阶变性Pascal蜗线型非圆齿轮节曲线数学模型及其凹凸性判别公式。为分析高阶变性Pascal蜗线型非圆齿轮传动特性,利用MATLAB编... 为满足多样性变速传动的设计要求,文章在研究Pascal蜗线非圆节曲线的基础上,通过引入高阶和变性原理,建立了高阶变性Pascal蜗线型非圆齿轮节曲线数学模型及其凹凸性判别公式。为分析高阶变性Pascal蜗线型非圆齿轮传动特性,利用MATLAB编写可视化设计分析平台,对影响高阶变性Pascal蜗线型非圆齿轮形状和传动特性的因素进行分析,为后续高阶变性Pascal蜗线型非圆齿轮的设计及应用提供了便捷的设计参考;将Pascal蜗线非圆齿轮驱动的曲柄滑块式压力机与对心曲柄滑块式压力机进行对比分析,验证了Pascal蜗线型非圆齿轮的优势和在实际应用中的可行性。 展开更多
关键词 Pascal蜗线齿轮 高阶齿轮 变性齿轮 传动比 压力机
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双圆弧齿廓椭圆齿轮建模与运动学仿真
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作者 袁新梅 杨立昭 +1 位作者 黄天成 唐伟 《机械传动》 北大核心 2024年第2期90-95,共6页
为了满足齿轮变传动比运动、提高轮齿承载能力,结合齿轮啮合理论和双圆弧齿廓曲线结构参数特征,提出了一种新型双圆弧齿廓椭圆齿轮。阐述了其节曲线的设计方法,利用SolidWorks软件建立了双圆弧齿廓椭圆齿轮三维模型;使用Adams软件对双... 为了满足齿轮变传动比运动、提高轮齿承载能力,结合齿轮啮合理论和双圆弧齿廓曲线结构参数特征,提出了一种新型双圆弧齿廓椭圆齿轮。阐述了其节曲线的设计方法,利用SolidWorks软件建立了双圆弧齿廓椭圆齿轮三维模型;使用Adams软件对双圆弧齿廓椭圆齿轮副模型进行了运动学仿真,分析了不同偏心率对双圆弧椭圆齿轮副传动比变化规律的影响,并对比理论传动比曲线,分析了仿真传动比曲线存在波动误差的影响因素;为了减小齿轮副振动脉冲,给出了偏心率适当的取值范围。本文的设计方法和分析结果对双圆弧齿廓非圆齿轮的参数化设计有理论参考价值,可为双圆弧齿廓椭圆齿轮副数控加工制造及应用提供依据。 展开更多
关键词 双圆弧齿廓 椭圆齿轮 运动学仿真 变传动比
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