A gear tooth accuracy testing device and its testing method

Abstract

This invention discloses a gear tooth accuracy testing device and method, relating to gear processing and production technology. The device utilizes conventional mechanical components, making it easy to manufacture and maintain, and suitable for rapid sampling inspection on the production floor. The auxiliary mechanisms, particularly the cage and adjusting components, can accommodate multiple sets of measuring columns. During actual gear measurement, each column can be measured sequentially as the gear rotates. Compared to existing testing equipment that repeatedly removes and reinstalls a single measuring column from the tooth groove, this effectively avoids the low efficiency caused by repeated placement of measuring columns, greatly simplifying the workflow. Furthermore, the testing method employs a process of first eliminating installation errors and then performing a second zero-calibration measurement. This facilitates data recording while effectively eliminating the influence of gear installation eccentricity, journal runout, and addendum runout on the measurement results, resulting in a more accurate reflection of the tooth groove's inherent deviation.

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