This paper analyzed and summed up the characteristic and deficiency of the calculation method of design strength with hourglass worms on the basis of AGMA standard. A new algorithm is put forward and proved its validity by the contact theory.

• 通过深入分析环面蜗杆传动强度计算的AGMA标准的特点和不足 ,提出了一种符合赫兹接触理论新的算法 ,统一定义了圆柱、环面蜗杆传动强度设计中心距 a =f(T2 ,n2 ) 是力矩和转速的函数的含义。