12 September 2018 Construction of virtual measurement datum in measuring gear tooth flank by laser interferometry
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A measurement datum is crucial in measuring a gear tooth flank by laser interferometry. Manufacturing a physical reference tooth flank as a measurement datum has many drawbacks: many different reference tooth flanks are needed with the changing of the measured gear’s parameters; the reference tooth flank’s manufacturing error lowers the measurement precision; the installation error between the measured and referenced tooth flank lowers the measurement precision also. The drawbacks restrain the practical use of measuring gear by laser interferometry. A construction method of a virtual measurement datum has been proposed to solve the problem. First, a virtual error-free model of the measured tooth flank is built according to its parameters and actual measurement position. Subsequently, the interferogram of the virtual tooth flank is simulated as a measurement datum through the ray tracing. To harvest the actual measurement position of the measured tooth flank, a compensation approach for optical system error and a tracing algorithm for actual installation position are developed. Experimental results prove that a virtual measurement datum can be constructed and used in measuring a gear tooth flank. Furthermore, this research verifies that ray tracing can be used to construct a virtual measurement datum in the relevant comparative measurements processes by laser interferometry.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Xindong Zhu, Xindong Zhu, Suping Fang, Suping Fang, Pengcheng Yang, Pengcheng Yang, Xian Wang, Xian Wang, Masaharu Komori, Masaharu Komori, "Construction of virtual measurement datum in measuring gear tooth flank by laser interferometry," Optical Engineering 57(9), 094102 (12 September 2018). https://doi.org/10.1117/1.OE.57.9.094102 . Submission: Received: 23 March 2018; Accepted: 7 August 2018
Received: 23 March 2018; Accepted: 7 August 2018; Published: 12 September 2018


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