齿轮的啮合振动和噪声是现代齿轮传动这一领域中的主要课题之一。本文通过对双圆弧齿轮实际啮合工况的简化,建立了这种齿轮啮合振动的力学模型和运动微分方程组,并且从参数激振的基本原理出发,分析并阐明了其啮合扭转振动的机理。在此基础上,本文给出了双圆弧齿轮传动的小振动、低噪声设计准则。 Gear meshing Vibration and noise are one of the major topics in the field of modern gear drives. In this paper, through the simplification of the actual meshing condition of double circular arc gears, the mechanical model and the system of differential equations of meshing vibration are established. Based on the basic principle of parameter excitation, the mechanism of meshing torsional vibration is analyzed and explained . On this basis, this paper gives the design criteria of small vibration and low noise for double arc gear transmission.