Ma Ning
Assistant Professor
Department of Mechanical Engineering
Shenyang Aerospace University
China
Biography
As a basic component in the driving of intersecting axes, spiral bevel gear (SBG) has been widely applied in the transmission system of automobiles, airplanes and many other machine tools since it has many advantages such as the big overlap ratio, the stability, lower noises and high loading capacity. The application of SBG in automobiles is particularly wide, and every transmission of automobile contains a pair of spiral bevel gear at least. The manufacturing accuracy and quality of SBG have direct influence on the efficiency, noise, precision and lifespan of the automobile transmission. A large number of studies show that the service performance has been improved and the lifespan has been increased by improving surface quality of gear. Finishing provides an effective method for improving gear surface quality and then improving gear accuracy. Pulse Electrochemical Finishing (PECF) and Electrochemical Mechanical Finishing (ECMF) are two kinds of nontraditional finishing process, which could finish the workpiece surface with any hardness efficiently and have been used as the finishing process of various parts. So, applying PECF and ECMF to SBG tooth surfaces is of great significance to the improvement of its quality. (1) Based on the Faraday’s law, the theoretical models about the variation of the surface roughness and the removal thickness with the finishing time have been developed. The validity of developed models has been verified through experiments. The effects of processing parameters on surface profile have been investigated and the smoothing mechanism of PECF is explained. (2) Because the PECF is complicated and non-linear process, least square support vector machine (LSSVM), an intelligent model is adopted for optimizing the processing parameters. The results indicate that the model has reasonable accuracy. (3) In the study of ECMF’s application to the SBG tooth surface finishing, an experimental setup for the SBG tooth surfaces finishing has been established based on ZX50F vertical milling machine.
Research Interest
1. Metal Surface Polishing by ECM 2. Electrochemical Micromachining 3. Bionic Manufacturing
Publications
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3. Ning Ma, Wenji Xu, Zefei Wei, G.B.Pang. Modeling and Experiment of Pulse Electrochemical Deburring on Inclined Exit Surface of Drilling Hole. Advanced Materials Research, 2011,328- 330,502-506.（EI）
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2. Ning Ma, Wenji Xu. Surface Quality and Accuracy Characteristics of Spiral Bevel Gear by Electrochemical Mechanical Finishing, Advances in Mechanical Engineering, Volume 2014, Article ID 709012, 6 pages
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1. Ning Ma, Xiaolong Yang, Mingqian Gao, et al. A study of electrodischarge machining–pulse electrochemical machining combined machining for holes with high surface quality on superalloy, Advances in Mechanical Engineering, 2015, Vol. 7(11) 1–11. DOI: 10.1177/1687814015618630
