In response to the problems of accuracy of verification results greatly affected by human factors,long veri-fication time,and low efficiency during the verification process of verification sample gauge's contour for wheel flange and tread of rolling stock,on basis of the existing verification process of verification sample gauge's contour for wheel flange and tread of rolling stock,and according to JJF(CR)044-2022 Calibration sepcification for model class mea-suring sample gauge for equipment repair and JJG(Railway)212-2023 Verification regulation of model class mea-suring sample gauge of railway locomotive and rolling stock,the design requirements and ideas for the verification de-vice for verification sample gauge's contour for wheel flange and tread of rolling stock is proposed,an automatic verifi-cation device for the verification sample gauge based on feature point coordinate method is developed and verified.The verification results show that the measurement capability of this verification device meets the requirements,and the measurement results meet the requirements for dissemination of quantity value.It can automatically measure the verification sample gauge's contour,reduce human error,shorten measurement time,and greatly improve the verifica-tion efficiency.
Rolling StockWheelWheel FlangeTreadVerification Sample GaugeFeature Point Coordinate MethodAutomatic Verification DeviceEvaluation of Measurement Uncertainty
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