使用实践证明，在相同的使用条件下，平面二次包络环面蜗杆传动副的传动性能比普通蜗轮蜗杆传动副好。
It has been proved by practices that the double enveloping worm gearing transmission is superior to the ordinary worm gearing transmission under the same condition.
蜗杆与蜗轮均为硬齿面，适于动力传动的新型环面蜗轮副。
Such a new type of hourglass worm pair is particularly-favorable for power transmission.
提出了对二次包络环面蜗杆传动修形的方法，以降低蜗轮副对制造误差的敏感性。
A method of modifying the double enveloping worm gearing with developable tooth surface has been proposed to reduce the sensibility of the worm gearing to the manufacturing errors.
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