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介绍用单刀间断展成法加工扇形蜗轮，解决了在滚齿机上很难加工螺旋角β＝０°的扇形蜗轮的问题。
This paper introduces the processing of fan-shaped worm gear with the single-blade intermittent development method, which solves the problem of the fan-shaped worm gear whose helical angle β = 0 ° is difficult to be processed on a gear hobbing machine.