小モジュール多数歯歯車の自動ピッチ測定機の試作

概要

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This paper describes a new measuring apparatus of cumulative pitch errors on small module gear having a large number of teeth. This apparatus has a detector composed of two thin plates perpendicularly intersecting each other and a ball or a pin feeler which is attached near the end of one plate. The feeler contacts with two facing gear flanks near the pitch circle simultaneously. Radial and circumferential deflections from the profile of ideal tooth surfaces are detected independently as electric signals by wire strain gages bonded to those plates of the detector. These signals are transformed into digital data and the data are memorized in a microcomputer. Based on these data, cumulative pitch errors are calculated. The measuring apparatus is controlled by a microcomputer and the results of measurement are obtained automatically. An example of measurement of a gear with 160 teeth whose module is 0.5 shows that the accuracy of this apparatus is within 3 μm and that its stability is well enough.
公益社団法人精密工学会の論文
1989-09-05