The vibration reduction and noise reduction of cylindrical spur gear transmission has always been a focus of attention in the industry. With the development of cylindrical spur gear transmission towards high speed, precision, and high power density, cylindrical spur gear vibration suppression becomes extremely important. Tooth surface modification is one of the important means to reduce the meshing impact of cylindrical spur gears, and a lot of research has been carried out on it. Jia Chao et al. proposed a vibration reduction and profile modification design method for involute helical gears considering the measured load spectrum. Jiang Jinke et al. proposed an optimization design method for vibration reduction of hypoid gear tooth surfaces based on Ease-Off modification. With the goal of minimizing LTE amplitude, axial force, and vibration acceleration, the optimal modified tooth surface was optimized and determined. Yu Dongyang et al. designed a practical modified tooth surface constructed by superposing the tooth profile modification surface with the theoretical tooth surface. Combined with TCA and LTCA technologies, a vibration model for multiple tooth pairs was established and multi-objective optimization was conducted. In order to more effectively reduce the vibration of the herringbone gear transmission system, Wang Feng and others conducted vibration and noise reduction designs for the source excitation (tooth surface meshing quality) and vibration transmission system (box structure) generated by the herringbone gear transmission system.
Fu Xuezhong combined LTCA technology with genetic algorithm to establish an optimization model for profile modification and vibration reduction of face gear transmission. Zong Changfu et al. adopted reducing transmission error fluctuations as a means to reduce shock vibration, established an optimization model aimed at reducing shock vibration and volume, and used genetic algorithms to optimize. However, tooth surface modification also faces certain bottlenecks from a manufacturing perspective. Therefore, starting with the design of wheel blank structures or adding damping devices to suppress the vibration and noise of cylindrical spur gears has gradually received attention. Especially for high-speed and precision gear transmissions, these measures are often simple, effective, and easy to operate. Liu Linhui et al. drilled vibration reduction holes on the teeth of cylindrical spur gears. The experimental results show that the hole structure can effectively reduce the vibration of gear pairs.
Feng Haisheng et al. studied the vibration reduction characteristics of cylindrical spur gear transmission systems with structural parameters of dry friction damping rings for high speed and high power density gear transmission systems. Wang Qingyang et al. analyzed the vibration mechanism of the cylindrical spur gear system and the principle of damping ring vibration reduction, discussed the amplitude frequency characteristics of the system, and discussed the relationship between the vibration reduction effect of the cylindrical spur gear damping ring system and the parameters of the damping ring. In order to improve the damping effect of the damping ring on the transmission cylindrical spur gear of an aeroengine, Wang Shuai et al. proposed a method for designing the damping ring’s profile in a free state, designed a pressure equalizing ring, and explored the impact of local non-contact of the damping ring on frictional energy consumption.
The meshing impact of cylindrical gears, especially spur gears, is more obvious due to their small coincidence. Therefore, this paper presents a vibration damping structure with slotted holes in the teeth of cylindrical gears. Using the Adams software, vibration acceleration simulations of cylindrical spur gears with different sizes of grooves, apertures, and backlash structures are performed. Their vibration characteristics are compared and analyzed through Fourier transform and related power spectra; Using orthogonal experimental design, a relatively optimal parameter design scheme was obtained. Finally, the effectiveness of the structural design for vibration reduction is verified through experiments.