Geometric transmission error model analysis of high precision F2C-T drive
According to the structure of the newly high precision F2C-T pin-cycloid transmission, influence factors on the transmission error were analyzed, and the error synthesis model of the various driving factors and parts were established. Taking the F2C-T455 model as an example, the theory of transmission error were analyzed, comparing contribution rate by driving factors of each part, the main influence factors of transmission error of the system were obtained.
The calculation of transmission error of gear
Gear transmission system is an important part of precision transmission machinery,the error of gear transmission has an important influence on its precision.Studying the reasons of the error of gear transmission,researching the relative merits of the main calculation methods(Absolute value method,Probability method and Monte Carlo method) in the calculation of gear transmission error.At last,a comparative calculation with a two-stage gear transmission system of punching machine was completed,and the results indicated that Monte Carlo method was the most convenient and effective method to calculate gear transmission error compared with the other two methods.
Some Analytical Results on Transmission Errors in Narrow-Faced Spur and Helical Gears: Influence of Profile Modifications
Some theoretical developments are presented, which lead to approximate analytical results on quasi-static transmission errors valid for low and high contact ratio spur and helical gears. Based on a multidegree-of-freedom gear model, a unique scalar equation for transmission error is established. The role of profile relief is analyzed by using Fourier series and it is shown that transmission error fluctuations depend on a very limited number of parameters representative of gear geometry and profile relief definition. An original direct solution to the optimum relief minimizing transmission error fluctuations is presented, which is believed to be helpful for designers. The analytical results compare well with the numerical results provided by a variety of models and it is demonstrated that some general laws of evolution for transmission error fluctuations versus profile modifications can be established for spur and helical gears.