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Production of a part of the TV bracket
Opravil, Petr ; Kocich, Radim (referee) ; Podaný, Kamil (advisor)
Master’s thesis is focused on the design of the production of a part of the TV bracket. Part is made of steel sheet with thickness of 2,5 mm. The structural steel S 235 JRG1 was chosen as the most suitable material with following powder coating. From the possible variants, the production by progressive forming tool was chosen with respect to production requirements and a series size of 25 000 pieces by year. Part will be made in seven steps and it will require total force of 2 500 kN. Production will be realized on a mechanical eccentric press KSTU 3150-25-F3-P-SE from ANDRITZ Metals with maximum force of 3 150 kN.
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Production design of the plug holder
Janoška, Lukáš ; Štroner, Marek (referee) ; Podaný, Kamil (advisor)
The bachelor thesis is focused on the production of a socket holder for towing devices. The chosen material is mild steel 11 321, which will be subsequently galvanized. The component will be manufactured from 2 mm thick coils of sheet metal in a total production of 100,000 pieces/year. Of the production variants considere, the technology of cutting and bending in a combined tool was chosen. The whole component will be manufactured in four steps with an overall material availability of 89,35 %. A total forming force of 530 kN is required for production. The design of the tool was based on the selected technological process. Mecanica Exacta model DM-S eccentric press from Formetal was chosen as the production machine, which will be subsequently introduced into the automated line.
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Design and analysis of reinforced concrete or masonry structures
Skočdopole, Jakub ; Švaříčková, Ivana (referee) ; Požár, Michal (advisor)
The bachelor's thesis deals with the static solution of the reinforced concrete ceiling slab and the inclined column of a 2-storey multi-storey building. The first part is devoted to the design of a point-supported plate, a cross-reinforced plate and an inclined column inclined by 15° from the vertical structure according to the limit state method. A spatial 3D model was created in the SCIA Engineer program, which was used to determine the internal forces in the structure. The correctness of the model results was verified by the sum of moments method. The second part deals with the study of the influence of the slope of the columns on the structure, when one row of columns in the 2nd floor was inclined and then the effect of this change on the structure and the static assessment were compared. Reference slopes chosen for the study: 0°; 15°; 30°; 50°, a partial spatial 3D model of the structure was created for each variant. The appendix of the bachelor's thesis is a detailed static calculation according to valid ČSN EN standards, drawing documentation and a study of the influence of the inclination of one row of columns on the reinforced concrete structure.
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Design for the production of a console plate
Andrýsková, Jana ; Kunčická, Lenka (referee) ; Podaný, Kamil (advisor)
The bachelor thesis deals with the design of the production of a new type of cantilever plate, which is used for attaching the staircase structure to the wall made of steel 11 373 with a thickness of 3 mm. It is manufactured by a combination of shearing and bending methods in a progressive compound tool in 4 steps. First the inner holes and part of the shape are cut out, then the outer shape is cut and bent. The production stand is a CC250 eccentric press, where the force required for forming is 903.5 kN and the work is 4,001 J.
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The production of a component of a lever lock
Hráček, Josef ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The master‘s thesis deals with the suggestion of the production of a component of a lever closure, which is used as a quick-clamping mechanism. The part is made of low-carbon steel DC01 in the form of a sheet with a thickness of 1.5 mm and an annual production of 200,000 pcs. The individual production methods were chosen using a progressive combined tool that combines cutting and bending. After evaluating the technology, determining the developed shape of the part and choosing its location on the line was chosen a semi-finished product in the form of metal coils sheet. After determining the production procedure, which consists of four steps, technological, construction and control calculations were carried out on the basis of which the tool was constructed. An eccentric press LEN 63 C was chosen as a suitable machine for production. A feed line marked ARPL RAL 150 was also chosen for production.
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Standardization of the copper technological forming process
Březina, Tomáš ; Císařová, Michaela (referee) ; Jopek, Miroslav (advisor)
The thesis focuses on the optimization of bending copper busbars in the Brno branch of the company ABB s.r.o. Busbars serve to conduct electricity and are used in high-voltage switchgears. The semi-finished busbar products are made of electrolytic copper that complies with the EN 13601 standard. Busbars are produced in various shapes and sizes according to the specifications of the switchgear. Part of the thesis involves a tensile test to determine the mechanical properties of electrolytic copper. A practical bending test was performed on a bending machine for bars with different mechanical properties. The entire bending process was simulated in Ansys Workbench software. Using the simulation, the tool stroke was optimized to achieve the desired deviation from the nominal angle. The optimized stroke was subsequently used on the bending machine to achieve the required bending accuracy.
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Manufacturing of a hanging fitting
Mucha, Jakub ; Benč, Marek (referee) ; Peterková, Eva (advisor)
The paper presents the design of technology for the production of wall-hanging fittings. The optimum production method was selected as the production in a sequential tooling process. The component is manufactured from a 2 mm thick steel sheet. The material chosen is galvanised steel DC01 + ZE. The semi-finished material for production is a strip wound into a coil. The part is manufactured in three steps. The forming force for the production of the part is 797 kN. Subsequently, the Mecânica Exacta CC100 press was chosen.
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Equipment for handling the switchgear panel
Brauner, Jiří ; Černohous, Josef (referee) ; Kašpárek, Jaroslav (advisor)
The work deals with the design of a handling device used for lifting, rotating, and moving a switchboard. The first part of the work includes a review of technologies for handling large loads. The second part contains a summary of legislative regulations for handling switchboards. Furthermore, the work includes the design of the handling device, comprising the concept design, construction design, and strength verification of selected structural nodes.
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Manufacturing of a holder
Bělocký, Jan ; Císařová, Michaela (referee) ; Peterková, Eva (advisor)
The thesis focuses on the design of a holder on the central tube under the dashboard of a car. The purpose of the holder is to secure individual dashboard components to the central tube. The required production series is 100,000 pieces per year. The specified material is HC420LA steel with a thickness of 1.5 mm. Various manufacturing methods were analyzed, with the most suitable being a combination of shearing and bending in a compound progressive tool. The selected semi-finished product is a sheet metal strip in coil form. Subsequently, a manufacturing process was designed, and based on it, a tool was constructed in which the part is produced in five steps. According to the calculated forming force of 886 kN, a KSTE 2000 servo press was then chosen.
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Tool design for production of springs for an organ
Svoboda, Jakub ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
This thesis focuses on a design for a machined bending fixture to enable the production of valve springs for organs. The reason for choosing this topic was the need to perfect the existing process of making organ springs. The main problem with the original fixture was the poor quality of the spring thread. Valve springs have varying properties and parameters that determine the requirements for the fixture. A 3D model of the complete fixture was created based on the author’s ideas and these requirements. Calculations were then made for a spring of specific dimensions. These calculations showed that the proposed size of the crank is adequate to enable it to be turned by the human hand. A force of 28 N is required at the end of the crank arm to exert the bending torque required to properly thread the spring. This figure is lower than the tabular values for the general European working population. This implies that the crank arm has the designed proportional length. To calculate the same specific spring and verify the function of the fixture, software simulation was also used. When creating the model, in addition to the calculations and simulation, an experiment was also conducted to verify the function and the main idea of the fixture, which is to bend with additional tensile stress. The result of the experiment was a spring that was subsequently compared with a spring produced using the original fixture. The marked difference in the appearance of the thread proved that the author’s idea was correct. The entire fixture and its components are described in detail in the thesis. The comprehensive design of the fixture in the form of a 3D model is prepared for consultation in an organ-making workshop and then for use in production.
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