Beveloid Planetary Gears Reducer Transmission Parameter Optimization Design And Gear Trimming

With the improvement of modern ship technology,the performance requirements for the gear transmission system of the reducer are getting higher and higher.Planetary gearboxes are widely used in ships because of their compact structure,small space,large gear ratio,power distribution and other advantages.However,existing marine planetary gearboxes are typically driven by straight and helical teeth.Due to its large tooth side clearance,high vibration and noise during high-speed operation,it is easy to partially load and have large power loss when crosslinking,resulting in low transmission efficiency and indirect economic losses.It is necessary to find ways to improve these problems.It is found that Beveloid Gears transmission is a kind of gear transmission.It can adjust the backlash,reduce the transmission error,and improve the transmission accuracy.Suitable for precision drives.In summary,this paper innovatively introduces Beveloid Gears to replace spur gears in traditional 2K-H straight gear reducers,designs variable tooth thick planetary reducers to reduce shock vibration during high-speed operation,improve transmission efficiency,and studies its dynamic and static characteristics and life.This is of great significance to improve the research and development and industrial manufacturing capabilities of China’s high-performance marine gear transmission systems.The main contents of the paper are as follows:(1)This paper firstly introduces the structural characteristics of the gear with Beveloid Gears,and takes the planetary gear reducer with Beveloid Gears as the research object.Based on the traditional design method,a new design method is adopted to study the planetary gear reducer with Beveloid Gears.In order to facilitate and quickly realize the design of the planetary gearbox with Beveloid Gears,with the aim of the smallest volume and the highest efficiency,the design variables are determined according to the design method,general specification and technical parameters of the planetary gear system of each unit.According to the contact conditions with the gear surface,tooth root bending conditions and grinding conditions,the boundary conditions are determined and a multi-objective optimization model is established.In terms of model analysis,the enhanced sparrow search algorithm(ISSA)is used to solve the model,The optimal parameters are obtained.(2)Solid Works software is used to model the deceleration of planetary gear reducer with Beveloid Gears,and Finite element analysis of planetary gear before and after optimization was performed in ANSYS.In ANSYS,The response surface method was used to optimize the planetary soil structure,and the best parameters affecting the static torsional strength and total mass were obtained.and the total mass,and the modal analysis of the optimized planetary shelf is carried out,Determine whether the design meets the design conditions.(3)Subsequently,according to the structural characteristics of the transmission system,the dynamics model of planetary gear transmission with bevel gears was established.This model mainly considers the contact friction of the tooth surface,the time-varying crosslinking stiffness of the tooth,the clearance of the tooth side,the static transfer error,the inclination of the Beveloid Gears and other important factors.According to the established dynamic model,the dynamic differential equation of planetary gear transmission system with Beveloid Gears was derived by means of Newton’s second law,and the value of maximum wave momentum of dynamic transmission error was analyzed,which provided a theoretical basis for the subsequent dynamic tooth modification.(4)Finally,according to the previous research,a dynamic transmission model of planetary gear with Beveloid Gears was established considering the modification parameters in order to improve the bearing capacity of the tooth surface and reduce the transmission error,so as to minimize the sum of the dynamic transmission error fluctuations of each meshing pair,and to solve and determine the optimal modification parameters.The contact characteristics of the gear pair after modification were analyzed,thus proving the effectiveness of the modification method.The drive simulation was realized by inputting the actual working parameters using ADAMS software,and ADAMS,ANSYS and n Code Design Life were used to perform fatigue analysis to accurately and quickly predict the fatigue life of modified Beveloid Gears.The fatigue life cycle of the planetary gearbox with Beveloid Gears was determined,and whether the fatigue life met the design requirements was investigated.Design optimization system corresponding to the development of the meshing load spectrum of the planetary gear train was obtained.The system could optimize the design and gear modification by inputting the initial parameters and appropriate boundary conditions.The optimized design and tooth modification methods for planetary gear drives presented in this paper can be visualized to become more general and can help end users run simulations,So they can see the performance of the model without having to understand the complexity of the model.