Effect of tooth profile modification on wear in internal gears

2017 2nd International Conference on Reliability Engineering

Tunalioglu, M.S.^1 ; Tuc, B.^2

Hitit University, Department of Mechanical Engineering, Corum, Turkey^1

Bakent University, Department of Mechanical Engineering, Ankara, Turkey^2

关键词: Closed circuit;    Gear mechanisms;    Load carrying capability;    Power circulation;    Profile modification;    Tooth profile modifications;    Wear behaviors;    Wear equations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/351/1/012003/pdf
DOI  :  10.1088/1757-899X/351/1/012003

来源: IOP

【 摘 要 】

Internal gears are often used in the automotive industry when two gears are required to rotate in the same direction. Tooth shapes, slippage speeds at the beginning and end of meshing are different according to the external gears. Manufacturing of internal gears is more difficult than external gears. Thus, it is necessary to determine the working conditions and wear behavior of internal gears carefully. The profile modification method in terms of strength and surface tension of the gear mechanism are performed in order to increase the load-carrying capability. In this study, profile modification method was performed in the internal gears to reduce the wear on the teeth. For this purpose, the wear of the internal gears was theoretically investigated by adapting the Archard wear equation to the internal gears. Closed circuit power circulation system was designed and manufactured to experimentally investigate the wear in internal gears. With this system, wear tests of gears made of St 50 material without profile modification and different profile modifications were made and the results were compared. Experimental study was performed in the same loading and cycle time conditions to validate the theoretical results and it was seen that the results are compatible. According to the experimental results, it is seen that in the internal gears, when profile modification done the wear is decreased in the teeth tip region.