Měření tvarově složitých ploch

Abstract

This dissertation thesis deals with the measurement of selected linear and geometric dimensions on parts manufactured in two different ways using rapid prototyping. The main objective is to compare the possibilities of scanning the required elements for subsequent inspection of the given dimensional characteristics and to assess their resulting values. The thesis is divided into several chapters. After the introductory chapter, the objectives of the thesis that I want to achieve are defined. In the first part, a comprehensive review of the current state of the art of length assessment is and geometric accuracy using contact and non-contact measurement methods. In the subchapters the individual measuring devices are described. In addition, the measurement methods for individual elements, measurement strategies and coordinate systems are described. One of the subchapters is the evaluation of measurement errors and measurement uncertainty. The next two chapters are devoted exclusively to experimental activities that comprehensively cover the area of linear and geometric accuracy evaluation. The results of measurements of circle diameter, distance between two points, flatness and perpendicularity, which were taken on equipment such as a coordinate measuring machine, optical scanners and a computer tomograph, are published. The object of the experimental measurements is to investigate the differences in the resulting values obtained with different measuring volumes in optical scanners and at different distances of the part from the X-ray source in the case of a computed tomography scanner, with respect to reference values obtained from a coordinate measuring machine. Finally, the results obtained and the contributions to the discipline of Mechanical Engineering Technology and practice are presented. The results will be further published and will be used for further research in this field.