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Design of a robotic workplace
Jaša, Lukáš ; Řiháček, Jan (referee) ; Štroner, Marek (advisor)
The bachelor thesis is focused on the design of a robotic workplace. In the initial phase, the input requirements of the workplace are defined, according to which the final design must be processed. Furthermore, the text contains a recherche of the current state of robotization. The third chapter is generally composed of four variants of different workplace designs. In the first of these four variants, all components are described in detail, which are also included in the remaining three designs. This variation was chosen as the most suitable possible solution. The reasons why this workplace is considered to be the most ideal are also described in detail in the chapter. In general, the robotic workplace is designed for welding steel frames of power generators. All manipulation is ensured by a welding robot together with a positioner. The operation of the entire robotized complex is performed by only one operator. In the fourth chapter, in addition to the reasons for choosing the most suitable variant, all weld lengths on the frame are calculated together with the time of complete manipulation and welding time. It also shows the time for which the designed manipulator is able to make the final product in the form of a weldment. The time for which the frame was manufactured by hand welding is also given for interest. The given results show a clear increase in production productivity in the designed workplace.
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Analysis of Tube Bending Process
Šrom, Jan ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
Master thesis analyzes rotary draw bending of the tubes without using a mandrel. Bending process is accompanied by many defects due to large displacement of formed material. One of the major defects is flattering of the cross section also called ovality. In order to decrease ovality comes up a proposal of the changes to the tool design. Modifications of tool’s geometry are numerically analyzed by finite element method in software ANSYS. According to the results of the simulations an optimized pressure die is manufactured. Several experimental tests are accomplished to verify the effect of the optimized tool design. Approximately 100 bends confirm a decrease of ovality using modified pressure die.
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Analysis of manufacturing of component by elastoforming technology
Lorenc, Tomáš ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
In this thesis, processed within the master's degree is the analysis and proposals for modification of production stagnation ribs aircraft L-410. The part is made of aluminum alloy D16. More specifically, it is a 0.8 mm thickness sheet, which after the milling of the blank molded in the basic non-rigid tool by Guerin. After analyzing the entire manufacturing process and the determination of the critical points due to a series of tests carried out were evaluated possible variants production innovation. Proposed changes and their optimization can reduce the labor intensity deleting some time being necessary preparatory and finishing operations manual. It also increases the repeatability and streamline current production panels.
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Straightening technology of semi-finished products
Sikora, Marek ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The main aim of this thesis is to create a general overview of processes that are applied in straightening semi-finished products. These processes include manual methods as well as mechanical ones. This work also informs about advantages and disadvantages of these processes based on published researches. This paper is supposed to give a basic overview of categories of machines and tools that are used in certain straightening technologies.
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Production of the gutter hook
Šobáň, Jakub ; Řiháček, Jan (referee) ; Podaný, Kamil (advisor)
This bachelor thesis introduces a gutter hook technology production design made of 5 mm thick 11 321 steel sheet. Progressive die tool shearing and bending was chosen as the best production technology. Technology and structure calculations were done for this method. A three step hole punching bender tool has been designed. HMG 100 press produced by TVARtech company – stroje s.r.o. with a coil feeding line by Coiltech company was chosen for production in accordance with the power requirements.
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Manufacturing of clasp
Polách, Libor ; Řiháček, Jan (referee) ; Podaný, Kamil (advisor)
The project is focused on proposal of clasp technology production. The clasp is a part of central lock in parachute harness. The part is made of galvanized steel sheet metal, sheet metal thickness 3 mm. The part has a spatial shape with holes. Expected manufacture series is 25 000 per year. Bassed on literary studies and manufacture requirements on the clasp, the method of cutting combinated with stamping in combined tool was found the most optimal. The final shape of clasp will be done in three steps. The nobel steel 12 050, which performs required mechanical properties, was chosen as the main material for clasp manufacture. The manufacture will be made by eccentric press LEXN 100C. The expected price of the clasp is 9,7 CZK per piece with counting the procurement price of metallurgical semi-finished product and the tool.
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Manufacturing of the Wall Bracket
Fridrich, Ladislav ; Jopek, Miroslav (referee) ; Řiháček, Jan (advisor)
The bachelor's thesis deals with a suitable design of production technology for a wall bracket, which will serve as a speaker positioning system. The part is made of non-alloy structural steel S 235JR with a thickness of 3 mm. The production series is set at 200,000 pieces per year. After evaluating the production possibilities, the technology of bending and progressive cutting is chosen, which are combined in a combined tool. Subsequently, the most suitable arrangement of the part on the sheet metal strip is selected and the sheet metal coil is selected as a semi-finished product for production. Furthermore, technological calculations are performed and drawing documentation of the tool is made. Based on the calculated values, the production machine Mecanica Exacta model CC250 from the company Formetal s.r.o.
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Manufacturing of the Oil Drain Tub
Hruška, Daniel ; Žák, Ladislav (referee) ; Řiháček, Jan (advisor)
The following thesis deals with the design of oil bath production by deep drawing of sheet metal. In the first part the thesis is focused on acquaintance and analysis of the proposed part. The thesis also deals with the issue of deep drawing of metal sheet. In the practical part of thesis is the design of production technology, technological calculations, the design of the drawing tool and the selection of suitable machine. The last part of the thesis is devoted to numerical simulations to verify the manufacturability of the part.
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Determination of Material Properties of Specimens Produced by Metallic 3D Printing
Zakl, Alexandr ; Peterková, Eva (referee) ; Řiháček, Jan (advisor)
This bachelor's thesis deals with mechanical properties and current status of 3D printing of metal parts, especially by DMLS/SLM method. Research part is dedicated to various technologies and suppliers in the field of 3D printing with emphasis on printing metal methods. Main purpose of this thesis is to connect the worlds of 3D printing and 3D optical measuring of deformation, so the part of research segment is dedicated to optical measuring and leading innovative company GOM. One of the leading product of this company is ARAMIS and in the context of this thesis it was present during the experiment as a instrument for measuring and inspecting material characteristics, and is present in research part where is mentioned a principle on which this device is working (digital image correlation) as is the device itsself. In the experimental part of this thesis, samples were printed on DMLS printer from company XactMetal, which were then submitted to a tensile test. Measurement was done using DIC based device ARAMIS and inspected for basic material properties in same named program.
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Production of supporting plate
Filip, Jiří ; Řiháček, Jan (referee) ; Podaný, Kamil (advisor)
The thesis presents a proposal of technology for production of supporting plate, which is a top part of a service trolley, serving for manipulation with switch of high voltage. The supporting plate is manufactured of low carbon, deep drawing steel DX51D+ZM thickness 2 mm and quality according to EN 10346. Annual serie was set for 200 pieces. In evaluation of production possibilities were chosen technologies of punching and bending. There was designed unfolded shape of the sheet metal with dimensions 1068 x 900 mm and created cutting plan. As was found, from one metal board is possible to cut out 2 pieces of the supporting plate, while 70% of material use. In the next step, punching tools were chosen and manufacturing process was made. The highest achieved cutting force was 122,8 kN. The chosen machine is hydraulic CNC press TruPunch 5000. For bending there was created a bending plan, according to which bends will be made in thirteen steps. Used bending tools are punch OW209/S and two types of matrix EV005 + FWZ and EV006 + FWZ. Maximal achieved bending force is, according to the calculation, 259,8 kN. Bending operations will be made on CNC press TruBend 5130. In a technical and economical evaluation was determined cost for the material, which is 57 337,5 Kč.
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