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在保证传动的预期可靠度及其它随机约束概率的条件下，以最小蜗轮齿冠体积为目标，建立了ZA型锅杆传动可靠性优化设计的数学模型，并给出了计算示例．
Under the condition of ensuring the expected reliability of transmission and other probabilities of random constraints, a mathematical model of optimal design of ZA pan-driven reliability was established with the minimum volume of worm crown as a target, and a calculation example was given.