Hsieh T.H.Jywe W.Y.Huang H.L.Chen S.L.Wen-Yuh Jywe2022-05-242022-05-242011https://www.scopus.com/inward/record.uri?eid=2-s2.0-79957606704&doi=10.1016%2fj.optlaseng.2011.04.005&partnerID=40&md5=db70aba26a8f3a9412d8260728843223https://scholars.lib.ntu.edu.tw/handle/123456789/611928A laser-based measurement system for evaluation of the scraping workpiece quality that can eliminate contact-induced measurement errors and increase measurement accuracy is proposed. The laser-based measurement system comprises a light-scattering-type triangulation laser, a computer numerical control (CNC) machine tool, and an analog-to-digital (A/D) card. The triangulation laser measures the depth of the scraping spots and the CNC machine tool locates their position. The 3D data of the scraping workpiece is then drawn using the least squares method. Cast iron and Turcite workpieces can be measured. Five parameters of the scraping workpiece, namely peak points per square inch, percentage of points, distribution of heights of points or depth of surroundings, edge shape of the grooves, and flatness, can be evaluated. The scanning rate and sampling rate of the laser-based measurement system are 100 mm/s and 10 KHz, respectively. In the future, an appliance machine based on the proposed system will be designed for the on-line detection of scraping workpieces. ? 2011 Elsevier Ltd.3D dataAnalog-to-digitalCNC machine toolsComputer numerical control machinesEdge shapeLaser-basedLaser-based measurementLeast squares methodLeast squares methodsMeasurement accuracyOn-line detectionSampling ratesScanning rateScraping workpieceTriangulation lasersWork piecesCast ironComputer control systemsLeast squares approximationsMachine toolsMeasurement errorsMeasurementsNumerical control systemsTriangulationQuality controljournal article10.1016/j.optlaseng.2011.04.0052-s2.0-79957606704