Pan Fengzhang

Jing Xiubing  

Meng Caifang
School of Mechanical Engineering,

  Tianjin University,

Tianjin 300072, China

Abstract: The involute gearing with small tooth number is usually referred to gearing transmission including a pinion with few teeth. Such problems as continuous transmission, avoiding undercutting and pointing of the pinion must be solved in the design. On the base of analyzing gearing with small tooth number, design points of the gearing with small tooth number are studied. Different minimum helix angle and corresponding modification coefficient of the pinion when the number of tooth of pinion is different. From the angle of practical using, the recommended practical number of teeth, helix angle and range of the modification coefficient of the pinion are given, which will provide scientific basis for selecting basic parameters appropriately.