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Manufacturing of the electric motor cover
Kolář, Zdeněk ; Svoboda, Petr (referee) ; Císařová, Michaela (advisor)
The bachelor 's thesis focuses on the design of the production of an electric motoro cover made prom low-carbon steel 11 305 with a thicnkess of 1,5 mm. For an annual production series of 100 000 pieces per year, the technology of deep drawing without wall thinning has been selected. In the practical part, it was found that the cover body can be produced in a single drawing operation. The blank diameter, increased by the trimming allowance, is 212 mm, which will be produced by cutting from coils with a width of 222 mm and a outer diameter of 1200 mm. Total fore of 249,18 kN includes the drawing component, holder and ejector. Production is carried out on the CUPJ 63 DEU hydraulic press from HŠV Polička, equipped with a lower hydraulic device. Deep drawing die is designed for the machine, which enables the production of the cover body in one drawing operation. Design is supplemented with a detailed assembly procedure. Lubricant MORLAUB KFP 61 V is used for optimal process condition.
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Design for Manufacturing of a Cover
Rusková, Marie ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
The thesis deals with the design of the air conditioning cover, which will be placed on the roof of the bus. The part is made of 17 240 stainless steel, which is suitable for cold forming, due to its outdoor environment. Deep drawing is chosen as optimal after assessing possible production technologies. Furthermore, the most suitable shape of the blank is proposed and the necessary calculations are carried out, which are verified by numerical simulation. The deep drawing will take place in one operation. Hydraulic press CTH 250 is chosen based on the required force 554.5 kN
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Manufacturing of the hydraulic pump shaft
Nečas, Zbyněk ; Řiháček, Jan (referee) ; Císařová, Michaela (advisor)
The thesis deals with the design of the production technology of the drive shaft of a hydraulic pump, the main element of which is the groove inside the shaft cavity. This component will be manufactured by Metaldyne Oslavany, spol. s.r.o., where the production series was set at 300,000 pieces per year. The material of the component was also specified as DIN 20CrMo5 steel, which will be purchased for production in bars with a diameter of 42 mm. The workpiece will then be cut from them using circular saws. After evaluating the specified requirements, based on the analysis of the specifications, the cold forming technology is chosen for production, specifically the combination of extrusion and upsetting, which the thesis focus on. Three basic production processes were put in place, for which their manufacturability was verified using the Simufact Forming 2023.4 simulation software. For the most suitable production variant, the flow stress, deformation resistance, and forming forces are calculated for each operation, which were then compared with the results of numerical simulation. According to the highest calculated force, a suitable machine was chosen from the company's current machine park, specifically a conventional single-operation hydraulic press SMG HZPU 320 with a nominal force of 320 tons. Then, tool sets were designed for each of the forming operations, when it was found that in all operations the die must be encapsulated using two clamps. The LP4-Kopřiva program was used to determine the optimal contact diameters, contact pressures and other encapsulation parameters.
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Manufacturing of grill
Bartáček, Petr ; Císařová, Michaela (referee) ; Podaný, Kamil (advisor)
The task was to design a disassemblable and transportable grill capable of grilling food up to 10 kg with the possibility of easy adding of charcoal. Corrosion-resistant steel 1.4301 was chosen for the material in contact with food, steel 1.0425 for heat-stressed parts, and steel 1.0038 for all other structural parts. The production technology included shearing, cutting, bending, rolling, welding, and machining using the machine park of the Institute of Manufacturing Technology at Brno University of Technology. After comparing the current market, a garden grill was designed with dimensions of 900 mm in length, 625 mm in width, and 1510 mm in height when closed, with a total weight of 78 kg and a sheet thickness of 2 mm. The drive unit, model MOT-EC 15/3-5, was chosen for its performance. The spit with forks was supplied by Kovo Janeček. The total cost of manufacturing the grill was estimated at approximately 10,000 CZK, and its transportability can be achieved using vans or larger vehicles such as SUVs or trailers.
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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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Production concept of oil filter
Machara, Miroslav ; Harant, Martin (referee) ; Císařová, Michaela (advisor)
The bachelor's thesis deals with the development of a literary study of drawing technology and a proposal for the production of a truck oil filter cover using deep drawing technology. The cover is made of 11 301 steel with a thickness of 2 mm. The production batch is set at 100,000 pieces. The production deep drawing technology was selected as the most suitable with the help of analysis. The tool with its technical documentation of the main parts was designed for the DNP 80 hydraulic press. Design verification and manufacturability are supported by simulation.
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Production of components deep forming
Stloukal, Mojmír ; Benč, Marek (referee) ; Císařová, Michaela (advisor)
The aim of this thesis is to create a research study addressing the issues of deep drawing parts with wide flanges. This work includes the process and technological calculations for drawing rotational parts without flanges and the differences in the technological process for producing parts with wide flanges. Furthermore, the utilization of parts with wide flanges in practical applications is summarized.
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Manufacturing of the box
Bednář, Jaroslav ; Peterková, Eva (referee) ; Císařová, Michaela (advisor)
This thesis concerns the design and production of a rotary-shaped soap box made of chrome-nickel austenitic steel 1.4301 0.5 mm thick, with a production batch of 50,000 boxes per year. Due to the size of the batch, the cutting and drawing technology without wall thinning was chosen for one drawing operation using a single tool. Based on analysis of the possibility of producing the tool and the necessary calculations, a tool was designed for the production of the lid and another tool was designed for the production of the lower part of the box. The corresponding hydraulic presses were then selected. A CUPS 25 DEU press from HŠV Polička with a forming force of 250 kN was selected to produce the lid and a Formetal PPCT-200 press with a forming force of 2000 kN was selected to produce the bottom part of the box. The production process is fully automated with an unwinding, straightening and scrapping line from Šmeral.
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Snow chains manufacturing
Bořek, Pavel ; Kubíček, Jaroslav (referee) ; Císařová, Michaela (advisor)
This thesis is aimed at investigating the snow chain manufacturing process with a closer focus on the problematic spot related to the heat affected zone, weld and base metal. In the theoretical part, the issue of resistance welding and the metallurgical processes involved in the formation of a resistance weld are described for a better understanding of the nuances in the practical part where a structural analysis of the weld area in terms of microstructure, macrostructure and hardness is carried out. For this part, chain samples after welding, carburizing, quenching, tempering and zinc electroplating are used.
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Manufacturing of the wheel center cap
Jiřánek, Jakub ; Štroner, Marek (referee) ; Císařová, Michaela (advisor)
The bachelor´s thesis deals with the production of a protective rotary wheel center cap for the hub shaft of a car. It is made of steel 11 320 and the production volume has been set at 120 000 units per year. Among the possible manufacturing technologies, deep drawing was chosen as the most suitable. The diameter of the blank from which the cover is drawn was determined by calculation to be 110 mm. The number of drawing operations was calculated to be one. The total force required for the manufacture of the component was calculated to be 85 kN. According to decisive criteria, a single-acting hydraulic press CUPS 16 DEU from HŠV Polička was chosen, for which a drawing tool was designed. Finally, drawing documentation was created for the cover, assembly of the tool with the die, punch, blank holder and the body of the blank holder.
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