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NIDEC-SHIMPO America Corporation is the North American subsidiary of Japan-based NIDEC-SHIMPO Corporation. NIDEC-SHIMPO is a manufacturer of planetary, worm, hypoid, bevel, strain wave and cycloidal gears.
The gear manufacturer is then responsible for ensuring basic gear alignment, such that the final assembly measurements are taken carefully and recorded for the reduction drive to be installed correctly, proper tooth contact in the factory, where the manufacturer accurately and precisely assembles the gears and pinions, and denoting all steps ...
In 1913, they established a joint venture in America with Timken for Radicon worm drive units. By the end of World War I the workforce had increased from 200 to 1,000 as they started building propulsion units for warships, and drive mechanisms for armaments. By 1921 the company was the largest worm gear manufacturer in the world. [2]
Therefore, regardless of the worm's size (sensible engineering limits notwithstanding), the gear ratio is the "size of the worm wheel - to - 1". Given a single-start worm, a 20-tooth worm wheel reduces the speed by the ratio of 20:1. With spur gears, a gear of 12 teeth must match with a 240-tooth gear to achieve the same 20:1 ratio.
A cycloidal drive or cycloidal speed reducer is a mechanism for reducing the speed of an input shaft by a certain ratio. Cycloidal speed reducers are capable of relatively high ratios in compact sizes with very low backlash. [1] The input shaft drives an eccentric bearing that in turn drives the cycloidal disc in an eccentric, cycloidal motion ...
The speed ratio of shafts depends upon the relation of the number of threads on the worm to the number of teeth in the worm wheel or gear. [3] As technology has improved, more slewing drives are using hourglass worm technology, in which the worm is shaped to engage more teeth in the gear. [4]
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