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Measurement Uncertainty Determination and Capability Evaluation during calibration CMM MicroVu
Vanek, Richard ; Jankových, Róbert (referee) ; Šrámek, Jan (advisor)
The diploma thesis deals with the determination of measurement uncertainty in the calibration of the Micro-Vu Excel 4520 Coordinate Measuring Machine (CMM). The research part of the diploma thesis is focused on the basic terminology used in the field of calibration measurement and on the general characteristics of coordinate measuring machines. The review part is concluded with the characteristics and description of the principle of operation of the CMM Micro-Vu Excel 4520. In the practical part, the diploma thesis first focuses on the selection of suitable standards for the calibration of the aforementioned CMM. Then it describes the performance of individual calibration measurements, which were carried out in the calibration laboratory in the building of the Czech Metrology Institute in Brno. Subsequently, it deals with the identification of individual measurement uncertainties and their evaluation. The thesis concludes with an evaluation of the results obtained, evaluation of CMM capability and recommendations for practice.
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Parts inspections by using reverse engineering methods.
Urbánek, Aleš ; Sedlák, Josef (referee) ; Zouhar, Jan (advisor)
This bachelor work deals with parts inspections by using reverse engineering methods. In first parts is adduced distribution and description devices used for reversing engineering. In next parts of work is characteristic of conventional measuring methods. The parts of this work is practical utilization of ATOS system to verification given part. Purpose of work is comparing conventional measuring methods with reverse engineering methods.
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Zvýšení efektivity kontroly ramene tankovací nádrže
Sobotková, Kateřina ; Tůma, Jiří (referee) ; Blecha, Petr (advisor)
The diploma thesis consists of a new design of a controlling procedure for a plastic component of a tank. Its theoretical part deals with the potential sources of errors and uncertainties arising from the measuring itself. It also deals with the characteristics of available CMM devices and includes an analysis of the methods assessing the acceptability of the measurement plan. The practical part analyses systematically the current state and proposes a new solution using a program created using a coordinate machine. A comparison of both variants is presented as an output of the thesis.
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Heavy workpiece measurement
Klus, Jakub ; Pavlík, Jan (referee) ; Holub, Michal (advisor)
This thesis deals with problematics of large scale metrology and describes possible methods of measurement. It focuses on ways to use coordinate measuring machines and laser trackers including their equipment. Then the variants are compared with each other on selected workpiece.
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Design of measurement robotized workcell
Tvardek, Michal ; Sláma, Josef (referee) ; Knoflíček, Radek (advisor)
This master's thesis focuses on the use of the Renishaw's Equator gauging system in cooperation with the industrial robot. The target is to design the robotized workcell which contains these two products. Robot acts as a manipulator for inserting and sorting out the workpieces into the "good" and "bad" pallets according to measured results from the Equator. Equator uses a parallel kinematics and probing system which is normally used on coordinate measuring machines. Therefore there is the introduction to the parallel and serial kinematic structures, to the problems of the coordinate measuring machines in the first part of this thesis. It was made a separation of the probing systems into a few basic categories, description of the typical representatives of these categories and of the other important accessories of the coordinate measuring machines, too. The second part of the thesis contains a description of the Equator gauging system, the industrial robot which I used and their accessories. In this part is mentioned a few examples of measurement automation in industry practice, too. The third part devotes to the design of the robotized workcell and contains all the important requirements for the realization.
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Review of methods to determining wear in hip replacements
Zapletal, Jakub ; Vrbka, Martin (referee) ; Ranuša, Matúš (advisor)
This bachelor thesis analysis issues of observation and measurement of wear on hip replacements. First of all there is a description of historical milestones in development of hip prosthesis. Afterwards there is a recherché study of measuring methods and devices, whereas each one of them is reviewed for pros and cons. In the last section these methods are compared and there is an author’s recommendation for the most viable method for observation and measurement of wear on hip prosthesis.
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Validation of plastic product in automotive industry
Kubín, Michal ; Jankových, Róbert (referee) ; Prostredník, Daniel (advisor)
This master thesis deals with the importance of testing of plastic parts in the automotive industry. It defines the basic principles and concepts of project management within product validation, specifies the principles in the corporate environment of ATEK s.r.o. Part of the thesis is the creation of a validation plan and a schedule of labory tests for the selected product from the BMW AG G20 project. The work defines the conditions and the execution of selected tests, eg the climate change test according to the BMW standard PR303.5. The tests are then evaluated. The output from the evaluation is a product optimization proposal.
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Use of a coordiante measuring machine for surface quality evaluation
Vančurová, Martina ; Šrámek, Jan (referee) ; Harčarík, Matej (advisor)
This master’s thesis deals with the use of a coordinate measuring machine probe for surface texture evaluation. The thesis’ goals were to describe the Renishaw’s SFP2 probe, to analyze the measurement system of the probe and a common stylus instrument, to carry out a demonstrative measurement, to analyze measurement results and to give practical recommendations. The measurement system analysis of the SFP2 consists in the evaluation of minimal specification limits of selected roughness parameters, for which gauge capability can be proven. The analysis results are compared with the results of the measurement system analysis of the Surtronic 25 profilometer. The differences in the measuring processes of mentioned devices are demonstrated by surface texture inspection of torque converter body. For the measurement result analysis, uncertainties in the selected surface texture parameters are calculated in two ways. Finally, recommendations for the producer of the probe and for its users are worked out. The results of this thesis may contribute to a wider use of a coordinate measuring machines for surface quality evaluation.
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Systémy měření rozměrů a tolerancí v technické praxi
Hlaváček, Martin
The presented bachelor thesis researches the area of length measurement in engineering practice. It describes the possibilities of measuring length dimensions in practice using modern measuring systems. First, basic concepts in engineering metrology, measuring procedures and an introduction to basic length measuring instruments are defined. This is followed by an introduction to more advanced, more accurate measurement systems, namely measurement using pneumatic, electronic and optoelectronic gauges. The work mainly focuses on measurement using coordinate measuring machines in engineering practice. It also deals with the measurement of surface profile, especially the mean arithmetic roughness Ra. The thesis concludes with a discussion of modern measuring methods and outlines the shift in the use of coordinate measuring machines in engineering practice and anticipated future developments.
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Zvýšení efektivity kontroly ramene tankovací nádrže
Sobotková, Kateřina ; Tůma, Jiří (referee) ; Blecha, Petr (advisor)
The diploma thesis consists of a new design of a controlling procedure for a plastic component of a tank. Its theoretical part deals with the potential sources of errors and uncertainties arising from the measuring itself. It also deals with the characteristics of available CMM devices and includes an analysis of the methods assessing the acceptability of the measurement plan. The practical part analyses systematically the current state and proposes a new solution using a program created using a coordinate machine. A comparison of both variants is presented as an output of the thesis.
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