Abstract
The present report describes the suitable in-situ scan of a laser stylus for point measuring of free surface with a machining center. The attempts were made to improve the measuring accuracy using numerical control function of G02 and G03. That is, we proposed a new measuring method that the laser stylus was scanned around a measuring point on the free surface, The experiments were done to measure the ground surfaces and the end-milled ones by this scanning method. As a result, it is clear that there is proper radius to scan a laser stylus according to surface roughness