A method for identifying and compensating the installation pose of cycloidal gears based on a gear measuring center

Abstract The accurate evaluation of the manufacturing errors of the cycloidal gear is a prerequisite for ensuring the high transmission accuracy of cycloidal-pin reducers. However, due to the inevitable installation errors during measurement, the measurement model is inconsistent with the evaluation datum, resulting in distorted actual evaluation results that cannot accurately reflect the actual tooth profile condition. Meanwhile, the lack of professional software also makes compensating installation errors a difficult problem for accurately assessing manufacturing errors. In view of this, a compensation method for the installation error of the cycloidal gear is proposed based on the gear measuring center. By identifying and compensating the actual installation pose of the cycloidal gear, the evaluation of manufacturing errors is more accurate and can better reflect the real machining condition of the tooth profile. By constructing and analyzing the error measurement model of the cycloidal gear, the evaluation coordinate system for the manufacturing error is clarified, thereby ensuring that the evaluation datum is consistent with the measurement datum. The mathematical model of the actual installation pose of the cycloidal gear is established by accurately describing the installation axis vector and the installation center position. Based on this, the accurate evaluation of manufacturing error is achieved in the workpiece coordinate system by establishing the conversion relationship between the measurement coordinate system and the evaluation coordinate system. Finally, the correctness of the method proposed in this paper is verified through comparison experiments of the measurement and the significance analysis. The practice shows that the method has good flexibility, which can not only accurately evaluate the manufacturing error of the cycloidal gear but also provide technical support for the precise measurement of complex parts such as bevel gears and gear cutters.