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Design of automatic clamping device for CNC milling machine
Jirásek, Jiří ; Holub, Michal (referee) ; Tůma, Jiří (advisor)
This work is focused on the design and construction of a device for automatic replacement of workpieces for CNC milling machines. The thesis contains research in the field of automatic replacement of workpieces. The design itself can be divided into two parts. The first part is the selection of a universal clamping platform and the design of a technological pallet. The second part is the design and construction of the clamping device. First, different design variants are proposed.. These variants are then evaluated by multi-criteria analysis, based on which the most suitable variant is chosen. This is followed by the selection of suitable components for the assembly of the universal clamping platform and the construction of the technological pallet. The main part of the work is the structural design of the pneumatic wedge vice, including the necessary calculations and design of individual components. The output is technical drawings of chosen components and a technical drawing and CAD model of the assembly.
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The description of large machine tools
Chrást, Ondřej ; Holub, Michal (referee) ; Sýkora, Jan (advisor)
Object of this bachelor’s thesis is to accomplished recherche of large machine tools, describe classification of individual machines by machining technology and make a comparsion of individual types of machines. Beginning of this bachelor’s thesis is devoted common characteristics of large machine tools. In next part of thesis is stated classification by machining technology including examples of current production of large machine tools in each category. In final part there is stated a comparsion of elected machines according to technical parametres.
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Building and control of 5-axis milling machines
Anderle, Milan ; Knobloch, Josef (referee) ; Holub, Michal (advisor)
This bachelor’s thesis studies the building and control of the five-axis CNC machining centres. Modern methods of geometric accuracy measurements are described with possibilites of compensating for geomeric and volumetric errors. Measuring devices described in this thesis are laser interferometer XL-80 and ballbar QC20-W for measuring geometric accuracy of MCV 754 Quick machine. The aim of the thesis is to describe current trends in construction, design and controlling of five-axis milling machines.
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Design of feed box X axis
Imrich, David ; Pavlík, Jan (referee) ; Holub, Michal (advisor)
The subject of this thesis is design of feed box for axis x of portal milling machine center FRP 300 from production of TOS Kuřim-OS, a.s. Thesis contains recherche in application field of rack and pinion drives for machine tools feed mechanisms, possible design solutions of given task and elaborate of the most appropriate solution. Thesis further includes calculations, 3D model and drawings of selected parts.
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Building of 5-axis milling machines
Andrýsek, Jakub ; Pavlík, Jan (referee) ; Holub, Michal (advisor)
This work is focused on the five-axis milling machines. The first section shortly describes the history of development, basic kinematic distributions and overview of the basic components of these machines. There are also described methods of detecting machine stiffness and calculation of the acceleration of the spindle. Work is also briefly engaged in reducing the energy demand of machine tools and intelligent systems, without which today's machines can not work already. In the second part are selected three machines from different manufacturers and compares their offered components and overall performances. The last part describes the calculation for the design of the drive spindle for the selected material and tools.
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Construction design hydraulic press brake
Stránský, Jaroslav ; Holub, Michal (referee) ; Pavlík, Jan (advisor)
This thesis is divided into several chapters. First two chapters after introduction are written as search type. In next part I devoted to detailed design of functional mechanisms of linearly moving parts of press brake. For the construction of stop mechanism I dealt with conversion types as ball screw, pinion with rack and timing belts. There is also quite thorough calculation part in ball screw and pinion with rack issue. I have also dealt with the necessary bending force and then designed hydraulic cylinders. Elaboration of machine frame with safety features is included.
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Design of multi-functional machining centre
Gruník, Jan ; Holub, Michal (referee) ; Blecha, Petr (advisor)
This work deals with the construction and describes a detailed calculation of a machine frame of the shaft-turning lathe and 2D axis passes including the underpass according to the chosen initial parameters. The information contained in this work is not only of theoretical knowledge, but it should also serve for the practical use as a guide for the frames construction. The work also contains a background research on the topic, the model frame, the frame strength analysis, optimization of the frame, 2D axis, calculation, design and implementation of the underpass and the whole assembly. A suggestion for the future procedure and optimizing of the existing structure is found in this work as well.
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Construction of equipment for deburring gears
Bosák, Daniel ; Tůma, Jiří (referee) ; Holub, Michal (advisor)
This thesis deals with the design of the equipment for deburring gears on the Gleason GP 200 machine. The first part contains research of current methods of deburring. At the following analysis of the task dimensions and layout of the machine, focusing on equipment placement, are analyzed. Next, a choice of tool is made. Two variants of design solutions are outlined. One of them is more elaborated. Important structural units are solved. At the end of the thesis an analysis of the geometry and stiffness is made. The maximum equipment load is recommended with regard to the maximum deformation.
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Design optimisation and strenght checking of Water tiltable devices
Mach, Jan ; Holub, Michal (referee) ; Knoflíček, Radek (advisor)
This master’s thesis is about possibility of fruit and vegetable process from agricultural raw material to food. The first part of thesis include information about machinery, devices and process line and describe how this devices work. The second part solve water tiltable device, this part explain what water tiltable device do, how work and describe structure of each subassembly. Next step solve the device by kinematics aspect and aspect of load analysis. Calculation is included in annex one. Results of annex one are used for FEM (finite element method) simulation of frame. Output of FEM simulation can be used for finding safety factor of displacement and strain, output data are used for optimization of device.
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Desing of PKS type TRIPOD
Coufal, Jiří ; Knoflíček, Radek (referee) ; Holub, Michal (advisor)
The thesis acquaints the reader with issues of manipulators based on parallel kinematic structures. It includes also the description of the construction procedure of chosen mechanism. Introductory search part specifies selected terms relating to building elements and describes their requirements. Alternatives of construction and used types of manipulators are shown in the illustrative images with labels. Next chapters deal with projects of selected parallel mechanism and methodologies of constructions. These chapters describe the design of all devised construction nodes. The construction and testing of the produced prototype is properly documented, indicating the resulting knowledge.
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