| 摘要 |
The invention relates to a method and device for optically measuring exte rnal thread profiles, particularly at the ends of pipes, wherein the thread is previously synchronously produced in a production line and is continuousl y measured in line from start to finish of the thread prior to further proce ssing. The aim of the invention is to allow cost-effective inspection of the thread during synchronous production of the thread. For this purpose, the p rofile of the previously produced thread is illuminated and/or scanned tange ntially to the pipe cross section by means of a relative movement including rotation and translation, and by an optical measuring unit comprising a came ra, and the scanning speed is adjusted such that the time for scanning the t hread profile, considering the required local resolution of the camera, is w ithin the cycle time for the production of the next thread, wherein the imag e of the thread contour is captured by the camera and the optical signals ar e then evaluated and compared to target specifications.
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