The controllable worm drive can realize the stepwise motion of worm wheel, therefore, it is very available for transmission with special requirement and feeder control of some ingenious mechanisms.

可控蜗杆传动机构，由于可实现蜗轮有控制的步进传动，故可做为某些有特定要求的精巧机构的传动与送料控制机构。

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Host drive system of machine tool is composed of stepless shift components, gearbox of worm wheel, saw frame, worktable, fastening piece, feeding and hydraulic equipments.

加工机床主传动系统由无级变速机构、蜗轮减速箱、锯架、工作台及紧固件、送料装置和液压机构等组成。

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A method of high precision round subsection by varied lead-interval worm and worm wheel was introduced, its drive theory, clearance adjusted framework and machining method were analyzed.

介绍了一种采用变导程蜗轮蜗杆的高精度分度方法，分析变导程蜗轮蜗杆传动原理、变导程蜗轮蜗杆调隙结构和变导程蜗轮蜗杆加工和调整方法。

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