Experimental Study on Reconstruction Method and Simulation Technology of the Thread Gauge

基於重塑與模擬技術的螺紋校準試驗研究

趙豔(Yan Zhao) ； 曲興華(Xinghua Qu) ； 張福民(Fumin Zhang)

《中國機械工程學刊》 39卷4期 (2018/08) Pp. 411-417

摘要

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.

關鍵字

thread calibration ； reconstruction model ； coordinate measuring machines (CMM)

並列摘要

本文提出了一種全面合理的螺紋規校對方法。該方法主要是利用座標測量機星型測頭對螺紋進行360度掃描，利用齊次座標方程建立螺紋模型。為了減小系統誤差，本文提出了Cosine誤差補償。同時，我們根據ISO1502建立了標準螺紋模型。通過使用座標測量機掃描建立的螺紋重塑模型與標准螺紋模型比較來校準螺紋規。實驗結果與國家計量院校準結果一致。