In order to improve the applicability of herringbone gear modification results， it is necessary to analyze the sensitivity of gear surface modification parameters. Using Romax software， genetic ...algorithm is used to carry out the optimal modification of tooth profile， drum shape and topology， and the modification deformation momentum is superimposed on the optimal modification. Then considering the center distance installation error， the bearing transmission error amplitude and the maximum contact stress of the pinion are analyzed respectively. Finally， the sensitivity analysis of the change of modification parameters to transmission error and contact stress is obtained. The results show that the load transmission error amplitude is sensitive to the tooth profile modification parameters， but not to the drum shape modification parameters； after the optimal modification of the tooth profile， the bearing transmission error is not sensitive to the center distance installation error， but the drum shape modification
In order to improve the load sharing performance and transmission stability of the split torque transmission system， aiming at a single input double output gear torque transmission system， three ...kinds of linkage center distance error calculation models of a single-input double-output gear split torque transmission system are established based on the idea of symmetry， synchronous change and follow-up. The projection calculation formula of the error on the meshing line is derived， and the influence of distribution of three kinds of linkage center distance error on the system load sharing and dynamic load coefficient is studied. The results show that the center distance error has little influence on the load sharing coefficient and dynamic load coefficient. The deflection angle under three different calculation models has a great influence on the system load sharing coefficient and dynamic load coefficient， especially the synchronous and follow-up change modes. From the calculation results， using the symmetrical
First of all,the 3Dmodeling of spiral bevel gear is conducted by using SolidWorks software.Then,based on Hertz contact theory,a virtual prototype model of spiral bevel gear for forklift main reducer ...is established by using ADAMS,through simulation experiment,and the change curve of gear meshing force amplitude fluctuations with the center distance change is got.Finally,through the inserting point method taking three typical installation,the further analysis of the dynamic meshing characteristic is carried out.By contrast,the control range of center distance of transmission stability more reasonable installation error is got and the optimal installation center distance is got,it can reduce vibration and improve the quality of gear meshing,the reference for the optimization design of installation center distance of the spiral bevel gear is provided.
The feature of W-N (Wildhaber-Novikov) gear is that the engagement of tooth surfaces becomes a contact between concave and convex surfaces, resulting in small relative curvature and high surface ...durability. However, this gear has a defect that it is very sensitive to the center distance error. So, we developed the tooth profile that causes it to become insensitive to the center distance error without injuring the advantages of the W-N gears. We clarified that the relationship between the change in the center distance and the operating pressure angle differs depending upon the rate of change of radius curvature of the tooth profile, and studied and indicated the tooth profile having what radius curvature is suitable for the W-N type gears.
The tooth profile which is insensitive to the center distance error, without sacrificing the advantages of the W-N gears, is developed. The authors clarified that the relationship between the change ...in the center distance and the operating pressure angle differs depending on the rate of change of the radius curvature of the tooth profile, and studied and indicated the tooth profile whose radius curvature is suitable for the W-N type gears. Then a formula to calculate the gap between the tooth surfaces of gears which are meshing was derived, and investigated how the gap between the tooth surfaces differs according to the different tooth profile. It is very important to take into account the affects of the expansion of the contact area caused by an elastic deformation on each tooth surface when a force is applied to the surfaces in mesh. Also a study was made to determine the tooth profile which is most ideal and suitable for the W-N gear.
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