This diploma thesis deals with the design of a selected structural part of multi-tasking machine tool. The solved construction part is the design of a turning table with the possibility of positioning with specified parameters. The research part is focused on CNC machine tools, multi-tasking machine tools and individual parts of turning tables with possible positioning. In a design part, the design of design variants of possible solutions is made and the choice of the design solution is made with the help of multicriteria analysis. Subsequently, the selected design solution is processed with the help of the necessary technical calculations. The result of the work is then a 3D model and the required drawing documentation.

This diploma thesis deals with assessment of geometric accuracy of machining center MCV 754 QUICK. BlueSYSTEM digital inclinometers from WYLER AG, XL-80 laser interferometer from RENISHAW, Ballbar QC20-W from RENISHAW and LaserTRACER self-guiding laser interferometer from ETALON AG were used to measure accuracy. Error of the X straightness in the direction of the Z axis was assessed. The first part of the paper describes the geometric accuracy of the machine, currently available instruments for measuring geometric accuracy and an explanation of straightness. The second part consists of the design of measurements, experiment, evaluation and comparison of results and recommendations for teaching.

This master's thesis deals with the simulation assessment of axis X damping possibilities of Heavy Machine Tools. CAD model has been provided by company TOSHULIN a.s. In the thesis, there is described modelling of axis X as multi body system consisting of rigid and flexible bodies. The main goal is to create simplified model and get the information for strategic decision of manufacturer about damping possibilities of axis X. For the solution has been used several software products: SolidWorks 2013 - for simplifying the CAD models, Ansys 14.5. for modelling od flexible bodies, MSC.Adams for modelling multi body systems and Matlab 2012 for data processing and optimization.

The subject of this engineer´s thesis is a design proposal for technical upgrade of chosen CNC turning center design groups. The choice of design groups is based on user´s and author´s practical knowledge gained from machine´s workings. For each of these groups, there is a function description, actual state of design solution and problematic behaviour description. The follow up consists of given problems solving with more possible variations taken into consideration, including economic evaluation of chosen solution.

The presented doctoral thesis is focused on environmental impact assessment of basic engineering materials used in a production machine construction. Ecological profile of the machine itself develops already in the phase of its design. It is not only about the choice of future machine parameters and materials that it is built from, but also about technologies used for its manufacture and operation conditions of the finished machine (consumption of energy and service fluids). The thesis occupies in detail with environmental impact analysis of the production machine design from the viewpoint of material production that mentioned machine consists of. The output from the performed analysis is methodology for evaluating of machine design from the viewpoint of greenhouse gas emissions. Created methodology enables evaluating of machine ecological profile and its possible adjustments even during pre-production stage. In the first part of the thesis the analysis of current legislation in the field of fighting against climate changes, reducing of products energy consumption and increasing of production machines energy efficiency is presented. Also in this part of the thesis description of methods that were used to achieve thesis goals is stated. Furthermore analysis of production machine as a system of structural components that fulfil the certain functions and description of used basic engineering materials are presented. The second part of the thesis is devoted to environmental impact analysis of the production machine design process. There the design process and environmental impact of machine design are described. This is followed by description of production machine life cycle and detailed analysis of undesirable substances emissions emitted during pre-production phases of machine life cycle (i.e. during the raw materials extraction and materials production). From this analysis the particular constituents’ pre-production phases which are sources of undesirable substances emissions (e.g. greenhouse gas emissions) were derived. The thesis also includes analysis of these constituents’ life cycles and description of electric power generation as a basic constituent of any phase of product life cycle. In this part of the thesis calculations of particular fuel type’s amounts that is required to produce 1 MWh of electric power and carbon dioxide amount produced during electric power generation are presented. The third part of the thesis contains created models of manufacturing processes of basic engineering materials and calculations of related emissions of selected greenhouse gases. The practical output from this part of the thesis is methodology that enables environmental impact assessment of machine design from the viewpoint of engineering materials used in its construction.

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Der beschleunigte Wandel der Industriegesellschaft wird auch in den nächsten Jahrzehnten entscheidend durch technologische Innovationsprozesse beeinflusst. In diesem Bereich sind die deutschen Werkzeugmaschinenhersteller führend, was anhand der vorgestellten Innovationen zu erkennen ist. Die deutschen Hersteller haben sich als Technologieführer mit geringeren Stückzahlen positioniert während die asiatischen Hersteller vorrangig im Segment der Universalmaschinen als Massenhersteller vertreten sind. Langfristig wird es darauf ankommen, ob die einzelnen Unternehmen zu strategischen Phasensprüngen fähig sind, die angesichts der Globalisierung der Wirtschaftsstruktur zu einer wettbewerbsfähigen Technologiekultur führen. Im Hinblick auf diese Anforderungen ist insbesondere die Beschleunigung der Entwicklungsprozesse eine wesentliche Voraussetzung für die Beibehaltung und den Ausbau der Marktposition der global agierenden Unternehmen. [... aus der Einleitung]

Eine Absicherung der Maschinendynamik im gesamten Arbeitsraum unter Berücksichtigung des Einflusses der Maschinensteuerung kann nur durch eine mechatronische Analyse der Werkzeugmaschine auf Gesamtsystemebene erfolgen. Derart komplexe Berechnungen erfordern allerdings die Simulation von großen Verfahrbewegungen (MKS) unter Berücksichtigung der Strukturelastizitäten (FEM) sowie der Steuerung (Controls) und sind somit vor allem multi–disziplinären Virtual Prototyping Tools vorbehalten. Die erfolgreiche multi-disziplinäre WZM–Berechnung stellt außerordentlich hohe Anforderungen an die Modellbildungsgüte der einzelnen Maschinenkomponenten inklusive der Validierung des jeweils gewählten Modellierungsansatzes bzw. Detailierungsgrades. Dieses gilt insbesondere für funktionelle Komponenten wie Linearantriebe, Kugelgewindetriebe usw., da diese nicht ohne Weiteres aus einem CAD–Baugruppenmodell abgeleitet und in das Berechnungsmodell übernommen werden können. Das zur Modellierung und Simulation notwendige Expertenwissen ist in einer vordefinierten, parametrischen Komponentenbibliothek – ähnlich einem Baukastenprinzip – implementiert.

This diploma thesis deals with issue of optimization of information needs in engineering company Weiler s.r.o. This work consists of otheoretical background, on which is established practical part, which contains strategic analysis of companies environment and information needs. There is processed strategic plan of optimization in three alternatives on these foundations - pessimistic with no change in the company, realistic, which counts with use of one information worker and optimistic, which counts with establishing an information department in the company. The final plan is elaboration of realistic alternative including financial plan, which contains the electivity calculation.

The thesis deals with building and utilization of mechatronic models which are based on modeling of system of rigid and flexible bodies. Such models are then used for analysis of behavior of complex systems, for instance machine tools. The work is concentrated on analysis of self-excitation of a machine tool. The appearance of the self-excitation during the machining may be influenced by several methods described in the work. The evaluation of the appearance of the self-excitation is analyzed via so called lobe diagram. It is necessary to know transfer function describing the impact of acting forces on the deformation of the system (machine tool in this case) for compilation of the lobe diagram. The whole structure of the model shows compliant behavior which dramatically influences the transfer function thus the approach to the modeling of mechanical parts as flexible bodies is proposed. There are created models of modally reduced flexible bodies based on modified CAD models which have same modal properties as non-reduced FEM models up to the maximal excitation frequency. The reduced models have significantly lower number of degrees of freedom and it is possible to work with them in multi-body simulation tools and at the same time they contain the information about the deformations. The work utilizes Graig-Bamton method which is implemented to the ANSYS. The whole model is consequently built and analyzed in ADAMS. It is possible to export the linearized model of the system in form of state matrices which are used for writing of the transfer function. The conditions of stability of the machining process are then evaluated via the lobe diagram. The proposed thesis presents the modeling of mechatronic systems with stiff and rigid bodies. The approach may be used for analysis of machining tools as well as for development of advanced mechatronic systems with active damping, etc.