Meshing Characteristics And Experimental Study Of A New Type Of Backlash Cycloid Gear

Precision transmission is a kind of mechanical transmission mainly focuses on transmitting movement in high precision,and it is an important basic component in manufacturing and equipment industry,national defense industry.In recent years,it has been also used more and more widely in precision transmission because of its outstanding averaging effect of errors which can lead to high precision caused by the multi-tooth meshing.As the direct action surface of load bearing and power transmission,the meshing tooth surface is the key factor that affects the performance of spiral bevel gears.Therefore,it is of great theoretical and practical value to improve the performance of the new type of cycloidal gear tooth profile optimization and its meshing characteristics.The main contents of this paper include:(1)A new type of cycloidal gear based on time-varying parameter is proposed and the tooth profile can effectively control the distribution law of the tooth side.The tooth profile equation of cycloid gear based on time varying parameter is deduced,the meshing characteristics are calculated.A new type of backlash cycloidal gear is proposed based on the idea of piecewise modification.(2)The tooth contact force model of a new type of cycloidal gear tooth profile is established.The mechanical characteristics of the new cycloid gear tooth profile and the traditional combined modification profile are compared and analyzed by an example The finite element technique is used to analyze the new cycloidal gear meshing perform tooth contact analysis.(3)The calculation method of sliding friction coefficient between a new type of cycloidal gear and a pin tooth is studied in the actual lubrication state,and analyzes the time variation law of the sliding friction coefficient in the transmission process.The calculation model of instantaneous sliding friction power loss and average slip friction power loss of cycloidal gear transmission under actual lubrication condition is established,and the calculation and analysis are carried out.(4)The prototype of cycloid precision transmission device based on the hatching cycloidal gear is completed.The driving efficiency test rig is designed and built to carry out the experimental study on the driving efficiency of the experimental prototype.