In order to manufacture planar double-enveloping toroid worm gear with CNC methods, a precise digital model must be constructed.
为了实现平面二次包络环面蜗轮的数控加工，必须对蜗轮进行精确数字化造型。
The global and local collision detection and processing in the machining planar double-enveloping toroid worm gear drive using 5-axis NC machine tool was discussed in the dissertation.
提出了平面二包蜗杆副五轴联动数控加工中全局干涉检测和处理、局部干涉检测和处理的方法；
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