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Design of multi-functional machining centre
Cvejn, Jiří ; Holub, Michal (referee) ; Blecha, Petr (advisor)
The purpose of this diploma thesis is a design of frame, crossbar, transverse feed, sliding feed of multifunctional machining center. In the first part, there is a brief research of history of machine tool conducted, division of machining centers, materials for frame construction, alternatives of drives of sliding axis. Further, I carry out an analysis of parameters of compeeting machine tools, from which I selected the parameters of our machine. Frame project of the machine, propulsion of axis X and Y, kinematic connection of axis X,Y,Z. Frame of machine is analysed by Finite Element Method. Over the scope of this work I suggest a solution for covering of linear axis as well as their measuring of actual position. 3D model of frame and drives of machine are included in this work. A complete formation has been introduced into the immersive virtual reality environment.
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Safety assessment of a multifunctional machining centre
Šponiarová, Petra ; Blecha, Radim (referee) ; Blecha, Petr (advisor)
The thesis deals with the safety of the multifunctional machining centre of TOS KUŘIM – OS, a.s. In order to assess the safety of the multifunctional machining centre and the safety of the workers involved in its manufacture and assembly, it was first necessary to familiarise ourselves with all the legislation, which includes EU harmonisation and OSH legislation. Harmonised legislation is followed by harmonised technical standards. Compliance with the basic safety requirements of the relevant harmonised standards is a prerequisite for meeting all the requirements of harmonisation legislation. One of the basic requirements before placing a product on the EU market is to carry out a risk analysis. This has been done by correcting and supplementing the risk analysis of the milling machining centre, on whose design the analysed machining centre is based, to meet the requirements of ČSN EN ISO 12100:2011. Particular attention was paid to the production and assembly stage, where several standard production and assembly procedures were selected. Flow charts were drawn up for these selected procedures and a risk analysis was carried out using the FMERA method, which was developed by modifying the FMECA method. For each risk, measures were proposed to ensure that it was reduced to an acceptable level.
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Positioning of the tilting head of a milling multi-purpose machining center with a horizontal spindle axis
Grepl, Martin ; Marek, Tomáš (referee) ; Marek, Jiří (advisor)
The thesis deals with the positioning of the tilting head of the multifunctional milling centre in three axis. The aim of the thesis is to design a multifunctional milling machine centre with a horizontal axis of the spindle in cooperation with Bc. Ľubomír Vazovan, Bc. Ján Rapčan a Bc. Tomáš Hynšt, who are working on the issues of the headstock, automatic tool change and palletization. The thesis also contains proposals of certain options and their subsequent evaluation by the multicriterial method PATTERN. The resulting construction is complemented by calculations of the main construction nodes.
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Design of multi-functional machining centre
Neumann, Ondřej ; Holub, Michal (referee) ; Blecha, Petr (advisor)
Design of multi-functional machining center The purpose of this diploma thesis is a design of turning table for multi-functional machining center. The first part is the background research of multi-functional machining centers, rotary tables, chip management and brief overview of chosen machining center’s manufacturers. The sphere of using of the designed machine, including parameters of turning table, and its basic parameters are determined on the basis of this research. Afterwards, the variants of turning table drives are drawn up and one variant of calculation and construction is made. Design of clamping desk and chip management of the machine is also made. Above a specified framework of this thesis, simplified machine foundation design and anchoring of machine parts to this basis is performed. The work also includes a 3D model of turning table and substructure. The complete set of constructed machining center was brought into immersion virtual reality environment.
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PřekladačVypnout okamžitý překladPalletizing of the tilting head of a milling multi-purpose machining center with a horizontal spindle axis
Hynšt, Tomáš ; Marek, Tomáš (referee) ; Marek, Jiří (advisor)
This diploma thesis deals with palletization of heavy workpieces that are used by multi-purpose machining centers. The final outcome introduces a suitable option for palletization heavy workpieces of multi-purpose machining centers. In the first part of the thesis is draft of machining centers with parameters which were chosen by exploration of market for selecting suitable solution. The second part of thesis is dealing with a detailed draft palletization made by parts of exploration of market then design palletization system and design pallet changer. The designed construction of pallet changer is dimensioned with help of analytical calculating methods and numerical simulations methods. Outcome palletization system allows automatic change of twenty tons workpieces including pallet between two storage places.
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Design of multi-functional machining centre
Sedlák, Pavel ; Holub, Michal (referee) ; Blecha, Petr (advisor)
This master thesis deals with the construction of multi-functional machining centre. The theoretical part describes the history of lathes, trends in production of lathes and individual machine parts. The practical part is the structural design of the spindle with positioning in the C axis, the second spindle (including drive in Z axis) and the turret (including drive in the X and Z axis). A 3-D model of the entire lathe assembly modeled in Autodesk Inventor 2010 is also included.
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Multifunctional machining centers for machining rotating and prismatic parts
Hlobil, Jaroslav ; Marek, Tomáš (referee) ; Marek, Jiří (advisor)
The content of this master’s thesis is the choice of a suitable concept for the multifunctional machining center for rotary and non-rotating workpieces and design and processing of one structural node of this machine. The structure of the work is divided into three parts. In the first part, the market analysis is carried out from which it follows to the second part and it is the choice of a suitable machine concept. The third part deals with its own design of the constructional structure of this machining center.
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Design of a multi-tasking machine tool
Macek, Robin ; Marek, Jiří (referee) ; Hermanský, Dominik (advisor)
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.
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Prediction of working accuracy of milling machining center with vertical spindle axis
Bařinka, Martin ; Marek, Tomáš (referee) ; Marek, Jiří (advisor)
This work contains a proposal for the methodology of production accuracy prediction for milling machining centers with a vertical spindle axis. The theoretical part focuses on the characteristics of working, geometric and production accuracy, production uncertainty, system approach and describes the current situation of science and technology in the field. The practical part contains the proposal of the methodology of production accuracy prediction for machining centers with a vertical spindle axis, including verification of this prediction for selected machines.
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