Research On Oil Injection Lubrication Mechanism And Power Loss Of High-speed Spiral Cylindrical Gears

Compared with spur gears,because of the uniqueness of the curved tooth profile,the arc tooth cylindrical gear has the advantages of large overlap,strong load-bearing capacity,stable transmission,high-speed transmission,high transmission power density,and high efficiency.Therefore,the arc tooth cylindrical gear have gradually become a popular research object in the field of gears.As the gear transmission field is facing more and more complex transmission forms,and the working conditions are getting more and more severe,whether the transmission gear can have good working performance determines the development and research level of high-performance gear transmission systems.This paper takes the spiral cylindrical gear as the research object,and conducts a detailed research and analysis on its oil injection lubrication mechanism and power loss.In-depth research on the lubrication mechanism of the arc tooth cylindrical gear under different oil injection methods and different working conditions,explore the best lubrication working conditions of the arc tooth cylindrical gears,and provide data reference for the design of the lubrication system of the arc tooth cylindrical gears.Further,analyze the power loss of the arc tooth cylindrical gear,provide solutions to reduce the power loss,improve the transmission efficiency of the arc tooth cylindrical gear,ensure that the arc tooth cylindrical gear has a good working environment,and improve the use of the arc tooth cylindrical gear.The life span is of far-reaching significance to the design and research of the arc tooth cylindrical gear transmission system.The specific research content is as follows:(1)Based on the gear meshing principle,the arc tooth surface equation is derived,and the arc tooth surface point cloud is solved through MATLAB programming,and the arc tooth cylindrical gear model is obtained by using 3D modeling software,which is carried out in the fluid simulation software.The pre-processing setting lays the foundation for the study of lubrication characteristics and power loss of the arc tooth cylindrical gears.(2)Explore the influence of different oil injection methods and different working conditions on the gear lubrication effect,further analyze the oil injection lubrication mechanism of the ultra-high-speed arc tooth cylindrical gear.With the change of gear speed,oil injection distance and oil injection speed,the variation law of the oil volume fraction and total pressure in the meshing area of arc tooth cylindrical gear.(3)According to the law of lubrication under different oil injection methods and different working conditions,analyze the influence of coupling action conditions on the lubrication of the arc tooth cylindrical gear,and intuitively reflect the effect of different working conditions on the lubrication of the arc tooth cylindrical gear,And in-depth analysis of the impact of the two oil injection methods on the lubrication characteristics of the arc tooth cylindrical gear.(4)Study the influence of the nozzle position layout on the lubrication characteristics of the arc tooth cylindrical gear,and obtain the deviation law of the injection jet streamline under different oil injection lubrication conditions.Further explore the influence of the three layout schemes of the nozzle on the lubrication effect of the arc tooth cylindrical gear,and get the best layout of the nozzle.(5)The digital twin technology is used to establish a simulation calculation model,the power loss of the spiral cylindrical gear is simulated and calculated.A series of exploratory researches on the method of reducing the power loss of the arc tooth cylindrical gear are carried out.Compare the theoretical calculation data with the simulation calculation data to obtain the accuracy and effectiveness of the simulation calculation model.