齿形系数是考虑齿轮的几何形状和齿根弯曲强度的系数.计算该系数涉及齿条刀具参数,危险截面位置,载荷作用角及弯曲力臂等的计算.由于零齿差中的齿轮,同时有经向变位和切向变位,确定齿形系数必须综合考虑.本文结合国家标准应用电子计算机来计算该系数. The tooth profile factor is a factor that takes into account the geometry of the gear and the root flexural strength.The calculation of this factor involves calculation of the rack tool parameters, the location of the dangerous cross-section, the loading angle of action and the bending arm, etc. Due to the gear in zero tooth difference, There is a meridional displacement and a tangential displacement, to determine the cog coefficient must be considered.This paper combined with the national standard computer to calculate the coefficient.