National Repository of Grey Literature 175 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
The options of the joining of tube components
Holusek, Maxmilián ; Štroner, Marek (referee) ; Peterková, Eva (advisor)
The bachelor thesis deals with tube components joining methods. In the thesis, the preparation of the tube components is mentioned, as well as its tools and machines for cutting and adjusting the components. Furthermore, the work introduces several joining methods such as soldering and brazing, welding, pressing technology, adhesive bonding and threaded connection. The basic principle is described for each method, as well as using tools and machines plus advantages and disadvantages. In the end, the use of tube components is presented.
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.
Manufacturing of metal yoke of electrical socket by compound tool
Svozilová, Lucie ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The project elaborated design of technology production of the metal yoke of electrical socket made of steel DX51D + Z200 by compound progressive tool. Stock material for series of 200 000 pieces is a strip of coil. Manufacturing is realised in five steps consist of cutting, bending and flanging. For flanging was constructed a special mechanism for whose is necessary to use hydraulic counterholder, which is sold as a special peripheral equipment of manufacturing machine. The machine choice was adapted to this criterium. The servopress DSF-N1-800A was chosen as a manufacturing machine, which is made by AIDA company. The press can produce force of 800 kN and make work of 4000 J. Selling price of a one yoke is 24,5 Kč when the profit is one hundred percent. The break-even point comes with 58 140 made piece.
Production of guiding disc
Slavík, Tomáš ; Peterková, Eva (referee) ; Císařová, Michaela (advisor)
The bachelor's thesis is focused on the design of the production of a guide disk made of sheet metal DC01 with a thickness of 3 mm. The production series is set to 100 000 pieces per year. Due to the required accuracy and size of the series, it was chosen that the guide disk will be made by the method of fine blanking. A coil of sheet metal has been chosen as the semi-finished product due to percentile of material usage and size of the series. For production will be needed a total of 24 coils of sheet with length of 308 m and one incomplete coil with a length of 132 m. The total force was calculated as Fc = 887,3 kN. Due to this strength, dimensions of the sheet and floor area of the tool, a triple-acting hydraulic press FEINTOOL XFT 1500speed was chosen for the production of the part. The last step was to check whether the size of the series is profitable or lossful. It was calculated that production becomes profitable at 49 554 pieces. Due to the size of the series, it can be stated that the production will be profitable.
Producing of aluminum shell
Šindelka, Karel ; Peterková, Eva (referee) ; Lidmila, Zdeněk (advisor)
The bachelor's thesis is focused on the design of a large-caliber signal cartridge. As a semi-finished product, a dome is chosen, which will be cut from aluminum sheet, according to the ČSN 42 4005 standard. Thanks to good cold formability and a large production series, it is suitable to use back-extrusion technology. The semi-finished product for this operation is a calibrated roller, from which a thin-walled cup is subsequently formed. Another operation is the shaping of the bottom of the cartridge case, in which it is necessary to create a flange and a cavity for the match. Since the semi-finished product is cut from a sheet metal sheet, it is advisable to choose multi-row cutting, in which the material utilization is about 70%. Thanks to the combined set of tools, it is possible to perform several operations per machine stroke. In this way, hundreds to thousands of pieces can be produced per hour. The extruder and extruders are made of tool steel 19 423 according to the drawing documentation.
Layout solution of a small workmanship within a given company
Urban, Antonín ; Peterková, Eva (referee) ; Štroner, Marek (advisor)
This thesis is focused on the process of making a disposition draft of a small machineshop producing 70000 bearing housings per year. Theoretical part of this thesis is focused on fundamentals of designing machining production units. Practical part describes in detail the process of designing dispositional solution for the machineshop which is based on performed capacity calculations. These calculations were used as a guide in the process of designing two diferent machineshops. The first one is fitted with conventional machining devices whereas the second machineshop uses CNC mills to produce the housing. These two projects are compared to each other to give reader a better picture on which machineshop of the two is better.
Manufacturing of the part of a wine bottle opener
Kyselá, Lenka ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
Diploma thesis introduces the design of a functional part of a wine opener, focusing on simplicity and effectivity of the manufacturing process with the use of progressive stamping tool. The part will be made by technology of progressive cutting and bending. For the production of the specified part stainless steel coil marked as 17 241.4 will be used This material is suitable for the use in commercial gastronomy thanks to its qualities. Also in this thesis there are technical calculations, suggestios for of optimal tools, economic calculations, and technical-economic evaluation of the production of the specified part.
Návrh roubené dřevostavby
Peterková, Eva
The diploma thesis deals with the proposal of the timbered buildings. In the proposal of log house is used glued massive profiles in order to meet the requirements for thermal protection of buildings. The massive composition is complemented by layer of heat insulation. In the first part of diploma thesis is devoted to the problems of solid wood house and the general information on the thermal properties of buildings. In the practical part of this thesis variants of peripheral walls are designed and these walls are compared according to preselected criteria between each other. The selected wall is processed by the drawing documentation and calculation of the energy performance of the building is done in the program ENERGY.
Manufacturing of the Wall Bracket Bicycle
Sikora, Marek ; Císařová, Michaela (referee) ; Peterková, Eva (advisor)
This master’s thesis presents a proposal for the technology of manufacturing sheet metal part, which is a part of a bicycle wall bracket. The component is made of steel sheet ČSN 11 325 with subsequent surface treatment by galvanizing. Due to the chosen method of manufacturing with a progressive stamping die, the research part is focused on the technology of shearing and bending. Technological calculations were performed for the most suitable production variant, on the basis of which a mechanical press ANDRITZ Metals with the designation KSTU 2000-20-4G-PSE was chosen. Furthermore, the design of the tool itself is presented, which is substantiated by drawing documentation. At the end of the work, a technical and economic evaluation of the produced series of 300 000 workpieces per year is calculated.
Implementation of innovative production of protective liner to the manufacturing company
Kukla, Petr ; Lidmila, Zdeněk (referee) ; Peterková, Eva (advisor)
The Diploma thesis describes the implementation of innovative production of protective liner to the manufacturing company. The liner is manufactured in sizes of nominal diameter DN 200 - DN 500. The material is low-alloy steel EN 10216-2 10CrMo9-10. For the production innovation, the technology of pipe end flaring by a movable mandrel was chosen. Verification of the functionality of this technology was performed using analytical calculations and numerical simulation of FEM. The results of numerical methods were compared with the results of a practical experiment. The experiment was performed on 5 test specimens with a diameter of 273 mm. The machine device was a hydraulic press with a nominal force of 2000 kN and equipped with pressure and position sensors. The experimentally obtained values of force and the tool path dependence were similar with the values of FEM simulation. The difference in the value of the force in the maximum tool path was 290 kN. The flared diameter was formed to a value of 319 mm. This value corresponds to 16.5% of increased nominal diameter, which is sufficient from design point of view. Non-destructive tests ruled out the presence of crack defects on the flared diameter. According the new set up working procedure was produced the first real part. Significant financial savings of CZK 3.5 - 5.3 million / year were quantified in the technical and economic evaluation. Return on necessary investments is between the 9th - 14th manufactured pieces (approx. 15% of the annual production volume). In conclusion, innovation has promising results and will be issued by the company into the production process.

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1 PETERKOVÁ, Eleonora
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