The study of double flank micro gear roll testing

Yen-Chih Liu; Nai-Chun An; Shu-Han Yang; Sheng-Zhan Yan; Shih-Lu Chen

doi:10.1117/12.904997

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15 November 2011 The study of double flank micro gear roll testing

Yen-Chih Liu, Nai-Chun An, Shu-Han Yang, Sheng-Zhan Yan, Shih-Lu Chen

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Proceedings Volume 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation; 83212B (2011) https://doi.org/10.1117/12.904997
Event: Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 2011, Yunnan, China

Abstract

The recent fast development of multifunctional portable electronic devices results in the obvious requirement of micro mechanical components. Due to the popular application of the micro actuators and the micro gearboxes, micro gears become the frequently used micro mechanical component in a small device such as small intelligent robots or dental surgical devices. Metal Industries Research & Development Centre (MIRDC) has successfully developed a small speed reducer that comprises several micro planetary gear trains. The module of this micro planetary gear train is 0.12mm. Since all gears are small, no commercial instrument is available for inspection. How to evaluate the manufacturing quality of micro gears becomes an important issue. This study focuses on the double flank gear rolling test and a specialized apparatus is built referring to the testing requirements in the international standards. The center distance variation during the rolling test is recorded and two indices, the total radial composite deviation and the maximum tooth-to-tooth radial composite deviation, are calculated to evaluate the accuracy grade of the micro gears. Experimental results show that the accuracy of the micro gear made by the cold forging process conforms to grade 7 defined in the ISO 1328-2 while grade 2 is achieved if the JGMA 116-02 is specified.

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Yen-Chih Liu, Nai-Chun An, Shu-Han Yang, Sheng-Zhan Yan, and Shih-Lu Chen "The study of double flank micro gear roll testing", Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83212B (15 November 2011); https://doi.org/10.1117/12.904997

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