Optimization design of loaded transmission error for HGT hypoid gear drives
WANG Xing1,FANG Zongde2,MU Yanming2,DU Jinfu3,CUI Yanmei4
1.School of Mechanical Engineering,Xi’an University of technology,Xi’an 710054,China;
2.School of Mechanical Engineering,Northwestern Polytechnical University,Xi’an 710072,China;
3.School of Mechanical and Precision Instrument Engineering,Xi’an University of Technology,Xi’an 710048,China;
4.School of Mechatronics Engineering,Zhengzhou Institute of Aeronautical Industry Management,Zhengzhou 450015,China
The fluctuation degree of the loaded transmission error curve can reflect the dynamic performance of a gear pair.The greater the fluctuation amplitude,the bigger the noise; the smaller the fluctuation amplitude,the smaller the noise and the transmission is more stable.Firstly,based on the local synthesis method (Synthesis Local),and according to the processing principle of the Gleason hypoid gear,the processing parameters of the HGT hypoid gear were designed.On this basis,the first order derivative of transmission ratio function and the angle between the contact trace and the root cone were treated the optimization variables,and the amplitude of the loaded transmission was treated as the objective function,then the optimization design for the processing parameters was done through the genetic algorithm,for improving the dynamic characteristics of the gear pair.It is found that: ① when the gear load torque is 800 N•m and 1 500 N•m, the amplitude of the loaded transmission error is reduced by 37.92% and 16.57% respectively; ② in order to keep the desirable vibration characteristics of gear pair,it should be to work near the load of local minimum amplitude; and with the increase of,the local minimum amplitude is moved to the direction of large load; it illustrates that,in order to make the gear pair with a smaller load bearing capacity,the amplitude of the loaded transmission error is larger.
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