Tài liệu Handbook of Machine Design P43 doc
... diameter of worm d R Root diameter of worm D Pitch diameter of gear in central plane D b Base circle diameter D 0 Outside diameter of gear D 1 Throat diameter of gear / Length of ... number of teeth selected is governed by high ratios of reduction and considerations of strength and load-carrying capacity. 36.7.2 Number of Threads in Worm The mi...
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