Spiral bevel gear is widely used because of its strong bearing capacity and stable transmission. With the development of industrial technology, the improvement of aeroengine technology and the requirements of advanced fighter aircraft for Aeroengine high performance and high reliability, spiral bevel gear should be applied to Aeroengine gear transmission system. In order to meet the requirements of high speed, heavy load and high reliability of aeroengine, the design requirements of spiral bevel gear are very harsh. The influence of various factors on its working performance needs to be considered. A little carelessness will cause serious accidents and major economic losses. The dynamic characteristics of spiral bevel gear in aeroengine is a research focus.
Scholars conducted in-depth research. In terms of contact analysis of spiral bevel gear for aeroengine, Wang Sanmin of Northwest University of technology and others studied the contact characteristics of spiral bevel gear for Aeroengine Main transmission as early as 1994, which provides a means and basis for the development of high-performance spiral bevel gear transmission system for aeroengine. Considering that the contact characteristics of spiral bevel gear tooth surface are affected by many random factors in the whole transmission system under the actual working conditions, in the probability analysis of spiral bevel gear contact characteristics, Wang Sanmin and others introduced the probability statistical analysis technology into the analysis system of spiral bevel gear tooth surface contact characteristics. The probability characteristics of tooth surface contact area and transmission error in the process of random change of gear base point are studied, and the reliability of stable contact is calculated. Wang Sanmin studied the contact stability of central spiral bevel gear transmission under the condition of elastic support, and obtained the measures to improve the contact stability of central spiral bevel gear transmission under the condition of elastic support. As for the tooth surface contact stress, Zhou Yanwei studied the calculation and optimization of the tooth surface contact stress of aviation spiral bevel gear. The calculation method of contact stress on the tooth surface of aviation spiral bevel gear is proposed, and the contact strength of spiral bevel gear is optimized combined with gear machining and tooth surface modification. Fang Zongde has done a lot of research on the contact analysis of spiral bevel gears. Liu Guanglei [25] formed the numerical method of elastic meshing analysis of spiral bevel gear in his doctoral research paper, and combined the numerical method of elastic meshing analysis of spiral bevel gear with the dynamic analysis of transmission system to simulate the dynamic meshing trace of spiral bevel gear.
The contact characteristics of spiral bevel gears have been greatly developed with the efforts of predecessors. At present, the faults of spiral bevel gears are rarely related to the contact problems of gears. On the contrary, the vibration problem has been accompanied by the development of spiral bevel gears. Therefore, the dynamics of spiral bevel gear transmission system has always been the focus of spiral bevel gear research.