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CSME 2018/08
Volume 39 No.4
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411-417
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Experimental Study on Reconstruction Method and Simulation Technology of the Thread Gauge
Yan Zhaoa, Xinghua Qu and Fumin Zhang
aState Key Laboratory of Precision Measuring Technology and Instruments Tianjin University, No.92, Weijin Road, Nankai District, Tianjin, China ; Tianjin Institute of Supervision and Testing of Measurement, Tianjin,NO.4,Keyan Road, Nankai Distric,Tianjin, China
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Abstract:
This paper presents a comprehensive and reasonable method for the calibration of thread gauges. The procedure involves scanning of thread profiles around 360 degrees by the star probes of coordinate measuring machines. The thread model can be reconstructed by collecting the touch points using the homogeneous coordinate equation. To reduce the system error, the probe Cosine error compensation is proposed here. In addition, we establish an ideal model based on ISO 1502. The thread gauge can be judged by comparing the reconstruction model scanned by a CMM with the model given by the standard. The experimental results show a good agreement with the values calibrating in National Institute of Metrology.
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Keywords: thread calibration, reconstruction model, coordinate measuring machines (CMM).
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©
2018
CSME , ISSN 0257-9731
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