A structural scheme design of internal thread detection based on laser profile scanning

Abstract Based on the analysis and comparison of the advantages and disadvantages of various existing thread detection methods, a kind of internal thread detection equipment and detection method based on laser contour scanning is designed, involving intelligent non-destructive testing technology and laser precision measurement technology, which can be extended into the workpiece to be measured, especially for various kinds of workpiece with small diameter of internal thread and cannot be accurately measured by the measuring device. Through the laser profile scanner and optical reflection element, the internal thread size of the workpiece, including large diameter, small diameter, pitch, thread length, thread chamfer, thread chamfer diameter, and other parameters, can be measured with high precision and high efficiency, and the detection efficiency is high. There is no need to touch the workpiece to achieve a non-destructive inspection of the workpiece surface. The test results are accurate, comprehensive, and reliable.