Anthony Hope

Presents the main methods and techniques for measuring and monitoring the accuracy of geometrical parameters of precision Computer Numerically Controlled (CNC) and automated machines, including modern coordinate measuring machines (CMMs). Highlightsinclude:• Standard methods and means of testing, together with methods newly developed and tested by the authors;• Various parameters, such as straightness, perpendicularity, flatness, pitch, yaw, and roll, as well as the principal processes for measurement of these parameters;• Lists and tables of geometrical accuracy parameters, together withdiagrams of arrangements for their control and evaluation of measurementresults;• Special methods and some original new devices for measurementand monitoring, information measuring systems (consisting of laserinterferometers, photoelectric raster encoders or scales, etc.), and methods for the measurement and testing of circular scales, lengthscales, and encoders;• Methods for measuring small lengths, gaps, and distances betweentwo surfaces;• Examples showing the suitability of mechatronic methods for highaccuracy correction of machines. Particular attention is given to the analysis of ISO written standards of accuracy control, terms and definitions, and methods for evaluation of the measurement results during performance verification.