Mr. Hanxiao Li Profile

Hanxiao Li

at Beijing Univ of Technology

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Proceedings Article | 19 November 2021 Paper

Uncertainty analysis of cylindrical gear tooth profile measurement based on profilometer

Ningzhi Li, Jiachun Lin, Hanxiao Li

Proceedings Volume 12059, 120590Y (2021) https://doi.org/10.1117/12.2612013

KEYWORDS: Profilometers, Data processing, Uncertainty analysis, Surface roughness, Algorithms, Error analysis

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Gears are important mechanical parts that transmit motion and power by interaction of meshed tooth surfaces. The processing quality of tooth surfaces has a direct influence on the performance of gear transmission. In order to verify whether the machining accuracy of the gear tooth surface meets the design and use requirements, it is necessary to measure its accuracy with related instruments. The geometric characteristics of the gear tooth surface include tooth profile, helix, tooth pitch and surface roughness, etc. For the measurement of tooth profile, commonly used instruments can not obtain the values of tooth profile shape, waviness, and surface roughness in one measurement. The cylindrical gear tooth profile measurement scheme based on the roughness profiler can realize the simultaneous measurement of tooth profile deviation, waviness and surface roughness. This is a relatively novel method, and there is a lack of relevant study on the uncertainty evaluation of the measurement results. This article introduces the measurement principle of cylindrical gear tooth profile based on roughness profiler, and analyzes the source of uncertainty in the measurement. The feasibility of the method is verified through experiments, and the uncertainty evaluation result is given.

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