齿轮齿条式转向器广泛应用于轿车、微型和轻型汽车,而传动采用变速比则能兼顾汽车转向轻便性与操纵灵敏性的要求。本文把共轭曲面原理用于变速比齿轮齿条传动的啮合分析,在已知齿轮齿面方程和速比曲线的情况下,推导出了齿条齿面的求解方法,并结合实例进行了计算,为这种转向器的设计与制造提供了理论依据。 Rack and pinion steering gear is widely used in cars, mini and light cars, while the transmission with a gear ratio can take into account the car steering light and handling sensitivity requirements. In this paper, the principle of conjugate surface is applied to the meshing analysis of gear ratio rack and pinion. With the known gear tooth surface equation and speed ratio curve, the solving method of rack tooth surface is deduced and combined with examples , Provided the theoretical basis for the design and manufacture of such steering gear.