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Joining Technology Metal Sheet by Forming
Brzobohatý, Radek ; Schwarzer, Emil (referee) ; Dvořák, Milan (advisor)
The Bachelor’s thesis describes the most famous methods of the metal sheets joining and is focused on metal sheets joining technology by forming. By the results of the experiments are assessed properties of selected metal sheets and behavior of joints in the various tests. The objective of the work is economic evaluation of joining technology by forming and technology of spot welding.
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STUDY OF FORMABILITY OF COATED SHEETS FROM THE PLASMA CHEMICAL PRETREATMENT OF SURFACES
Schwarzer, Emil ; Šanovec, Jan (referee) ; Rusz, Stanislav (referee) ; Dvořák, Milan (advisor)
Theoretical part PhD thesis describes bending of sheets especially with a small bend radius and the distribution of deformation and describes the parameters of bent sheet. As the test sheets were treated by cataphoretic coating is this method described together with pretreatment of sheet. The practical part is focused on the principle multi-jet plasma system and treatment of the steel surface and examines the bent surfaces of the steel sheets with different variants of applying the coating. Selected samples are bent on the multifunction graduated bending jig and subjected to the Erichsen test and deduced results using plasma system and without the use of plasma system. In the experimental part were examined samples treated by multi-jet plasma system and subsequently bent on the multifunction graduated bending jig. Compares the results of individual experiments in system steel – base coat – plasma – topcoat. And also compares mutual combinations of various kinds of modifying the surfaces of steel samples with different coatings. Selected samples were tested for tensile test and the results were processed from this test. For selected samples was calculated hardening exponent. Another experiment consists in applying a circle at equal samples and subsequently the samples were bent under a defined radius and were determined tensile and compressive deformation. Samples of sheets were then embedded in the resin and then examined under a microscope, where they were divided into several categories and was determined optimal composition multi-jet plasma system for selected samples and the specific coatings on sheet plate with a maximum adhesion of the coating to the steel base. Selected measured values were subjected statistical control.
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Modern forming technology in engineering
Čajan, Tomáš ; Schwarzer, Emil (referee) ; Dvořák, Milan (advisor)
Focus of this thesis lays on modern forming technology in engineering, especially technologies used for press joining of sheet metal. It also deals with modern technology in welding and adhesive bonding and contains literary study of these technologies with further comparison of their advantages and disadvantages.
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Manufacturing of the Body Part of an RC Helicopter
Kománek, Michal ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
This thesis deals with the production of manufacturing of the body part of an RC helicopter, made from aluminium sheet with a thickness of 1 mm. Set production series is 200 000 pieces per year. After researching suitable production methods, the technology of progressive stamping was chosen. Based on theoretical knowledge has been design a production plan with the highest productivity. Technological and design calculations serving as a basis for tools and press selection are also an essential part.
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The Production Technology of unrotary part with flange
Přikryl, Zdeněk ; Hušek, Martin (referee) ; Císařová, Michaela (advisor)
Study describes application of forming technology for the production of unrotary parts with flange. The Study considers preliminary technology of forming processes in general. Further includes problems about drawing of unrotary parts with flange from singular to complex shaped. The next part of study includes evaluation of methods of the production belt gear shelter considering product criterias for series production and final accuracy and quality. Following part includes suggestion of the production technology of belt gear shelter using sheet metal forming. In the next parts of the study attends to accurate technological process elaboration of the components, to technological calculations and to project tool configuration. In conclusion the study includes technoeconomic evaluation of propřed technology production.
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The manufacturing of the aluminium-zinc coated steel sheet transformer
Sykáček, Jiří ; Šlais, Miroslav (referee) ; Císařová, Michaela (advisor)
The project developed in within the framework of Magister ´s studies of field M-STM is elaborated to meet customer requirements for manufacture of transformer station, which is intended for use in photovoltaic power station. Design and drawing documentation were prepared using 3D CAD System Solid Edge. Self-supporting frame of the transformer station welded from separate parts made from alu/zinc plates is in the form of a technological unit, which is equiped with electrical technology needed for safe and failure-free operation of the power station. It deals with technology of components production, including subsequent process of hard soldering and surface finishing. As the best solution was chosen processing of forming punching and using brake press. Chosen production methods are assessed not only form point of view of used technology, including the technical pitfalls associated with processing of alu/zinc plates, but also in terms of economic costs of manufacture throughout the transformer station. The forming processes are made using punching press TRUMPF TC200R, with rated shear force of 165 kN and brake press URSVIKEN Optiflex with rated compressive force 1 300 kN. Forming tools are optimally selected according to parameters of different types of parts. Finally, it compares the technical-economic aspects of production transformer station made of alu/zinc plates compared with whole-concrete construction of the station using bell-casting method.
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Design of a tool for production of shaped blanks
Řáda, Aleš ; Štroner, Marek (referee) ; Dvořák, Milan (advisor)
Master thesis reports questions about purchasing supplies for stamping shop. It solves task, that is cheaper buy blanks, or buy coils and cut them in free time of Raster 250 press. Thesis contains a design of cutting tools for production rectangular and trapeze shaped blanks. Tool for cutting of rectangular blanks is documented with drawings of assembly and main parts. The project was verified in techno-economic summary including repayment time calculation.
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Production of a part of the data projector bracket
Starý, Petr ; Štroner, Marek (referee) ; Podaný, Kamil (advisor)
The diploma thesis presents technology production design of a data projector bracket made of 2 mm thickness 11 321 steel plate. Considering the large production quantity and maximum tolerable deviations, a progressive die tool along with cutting and bending was chosen as the optimal solution for this type of production, based on a variant solution. Technological aspects were assessed, the production process was established, and technological and control calculations were performed. According to the total forming force of 2 000 kN, the LDC 250 mechanical press with a nominal force of 2 500 kN, manufactured in Šmeral Brno a.s., was chosen to meet the production requirements. The chosen material in a form of metal sheet coils will be supplied to the machine by a feeding device. The article will be manufactured in six steps. Based on technical-economic evaluation, the final price of a single piece in a series of 250 000 pieces per year was set at 30,80 Kč.
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