A Study on Zero-backlash Reduction Mechanism

概要

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Zero-backlash reduction mechanisms are necessary to prevent hunching phenomena in high accuracy servomechanisms. One procedure commonly used for eliminating of backlash is the spring loader by scissors gears and pre-load-spring method. however, the method can not be sufficiently effective to the reduction mechanism. In order to get a more effective zero-backlash mechanism, the authors tried to use a pair of a globoidal cam and its mating roller wheel. The main results of the study are summarized as follows; 1) Even the globoidal cam ground by a plane grinding wheel is available. 2) Some methods to measure the accuracy of the globoidal cam and the roller wheel were proposed and proved to be valid. 3) Removability of backlash of this globoidal cam reduction gear mechanism was confirmed.