National Repository of Grey Literature 141 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Manufacturing of an End Stop for a Sliding Gate
Holusek, Maxmilián ; Císařová, Michaela (referee) ; Peterková, Eva (advisor)
This masters´s thesis deals with a manufacturing of an end stop for a sliding gate. The semifinished product material is a DC01 steel with a thickness of 3 mm and the production size of the series was set at 100 000 pieces a year. From many posibilities of production alterntives, a progressive die tool was chosen. It combines the two main technologies, which in this case are cutting and bending. After a proposal for manufacturing was made, much needed calculations of forming forces and work were done. The total forming force equals 1 937,7 kN. The next step was making a design of a progressive die, plus picking a S 250 press from a company called Šmeral Brno a.s. A production line from a company called Attl a spol. s.r.o. for feeding a steel coils into the press was chosen.
Production concept of sink
Bahula, Jan ; Jopek, Miroslav (referee) ; Císařová, Michaela (advisor)
The thesis presents a design for manufacturing a rotary kitchen sink made of a stainless austenitic steel 17 240 with a thickness of 0.8 mm with a production series of 20 000 pieces per year. Based on the analysis of manufacturing variants and necessary calculations, deep drawing without a reduction in the thickness was selected to three operations including calibration. A hydraulic press PO 250 from Dieffenbacher was chosen based on the required forces and available rams. The drawing process was checked using numerical simulations and tools were designed for each operation using a drawing ram, a bottom blank holder, and an upper ejector. In the design of drawing tools, normalised components or easily manufacturable parts were preferred.
Production concept of lampshade
Drška, Jan ; Peterková, Eva (referee) ; Císařová, Michaela (advisor)
In this thesis is worked out for the optimization of the lamp shade is developed. The aim of the optimization is to use more affordable parts in the assembly and to use technology for largescale production. A literature study is carried out for the chosen technology. The technological calculations of the drag coefficient, the dimensions of the extractions, the dimensions of the pullers, the calculation of the pulling and holding force, the design of the construction of the tools, the design of a suitable machine and the simulation in the PAM-STAMP program were carried out. Based on the outputs from the program to the Keller-Goodwin diagram, the part is manufacturable. In conclusion, it is determined that for the selected deep drawing technology, a graded extract will be drawn for five operations, and the sixth final operation is a calibration one. The machine chosen is a hydraulic press from the company HŠV Polička because the company is able to supply additional accessories in the form of ejectors and adjust the opening height of the machine. The tool is divided into two parts due to the large number of operations.
Production concept of adjustable holder
Slavík, Tomáš ; Řiháček, Jan (referee) ; Císařová, Michaela (advisor)
The discussed issue was the production of the body of the adjustable universal holder for license plates, blinkers, and reflectors for Yamaha motorcycles. The material chosen for the production of the component was DC01 steel with a thickness of 3 mm and the size of the series is 120 000 pieces per year. After evaluating considered production variants, it was decided that the part will be made in compound tool that combine shearing and bending operations. The part will be produced by four shearing operations, three inter-shearing operations, one bending operation and by shearing the finished component from the sheet metal strip. Sheet metal coil was selected as the semi-finished product, with a material usage rate of 51,46%. Based on technological calculations, it was decided that the eccentric press DM400 from Formetal will be used for production. The tool design with a spring floating guide was chosen and his parameters were derived from previous calculations and the selected production process.
Production concept of wall mounting bracket
Tesař, Michal ; Štroner, Marek (referee) ; Císařová, Michaela (advisor)
The thesis deals with the solution of the design of the production of a holder for compact switchgear cabinets. The production series was set at 400,000 pcs/year. The part will be made from DC01 steel with a thickness of 2 mm. The equivalent is steel 11 321. Of the possible production variants, the technology of the progressive forming tool was chosen. The arrangement of the blank on the sheet metal strip is a two-row layout, where two components will be produced at once. A coil of sheet metal with exact dimensions was chosen as the semifinished product. The material utilization coefficient is 80.18 %. The part is manufactured in 8 steps and the necessary technological and structural calculations were made for this variant. The total force to produce the part is 1,240 kN. The machine selected is an eccentric crank press from the company Formetal s.r.o., with the designation CC 160. After the actual production, the components will still be galvanized.
Production Design of the Bicycle Disc Brake
Brejčák, Dušan ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
The solved problem is production of brake disc, which is part of bicycle´s disc brake. For production is chosen rustproof steel ČSN 17 024. The thickness of materiál is 2 mm and there are 200 000 pieces produced per a year. After assessment of manufacturing variants the best method is fine-blanking technology with v-ring and there is developed a literary recherche for this matter. Then there are evaluated technological and control calculations. For production as semiproduced material is chosen roll of sheet metal with its outside diameter 1 200 mm. There is made a suggestion of design of cutting tool and for manufacturing it is chosen hydraulic press Feintool HFA 4 000.
Development of Transport Cart with Stretcher
Bastl, Dominik ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
The diploma thesis deals with the design of a transport gurney with a stretcher for people up to 150 kg. The aim is to design the simplest possible construction of bent and welded pipes and profiles with a thickness of 1.5 and 2 mm from E235+CR1 S2 steel, based on an already functional product on the market, taking into account the commissioning company's available machinery AUDY s.r.o. The theoretical part of the work is devoted to the main production technologies, i.e. bending and welding. A literature search is prepared for the mentioned technologies. Bending is more focused on length of the blank and springback angle. In welding, the weldability of the selected steel is assessed, a suitable welding wire with shielding gas is selected and the process parameters are determined. Theoretical findings are compared with practical outputs. The practical part includes design, prototype production and trial tests to verify the reliability of the new product. Necessary construction and technological calculations with basic drawing documentation are also included.
Production of a headlight replica
Hanzelka, Jakub ; Císařová, Michaela (referee) ; Žák, Ladislav (advisor)
The thesis deals with the design of a headlight reflector production. The sheet thickness of DC04 material is 0,6 mm. Various technologies were evaluated, and hydromechanical deep drawing was chosen due to the complexity of the component shape. The semi-finished product will be a circular sheet with a radius of 117 mm, which will be cut out from metal sheets measuring 2500 x 1500 mm. The component will be manufactured in a single drawing operation. The total forming force is calculated 171 kN. Subsequently, a simulation of the drawing process was conducted, confirming the manufacturability of the part. The maximum forming force reached 226,6 kN. The ZH 30 press was chosen, and the tool design was proposed.
Proposal warehouse in engineering company
Čermák, Jan ; Císařová, Michaela (referee) ; Štroner, Marek (advisor)
This master thesis deals with the design of a new warehouse of an input material in an unnamed engineering company. The main intention is to create a well arranged and functional storage of metal sheets, tubes, HSS profiles and HEB profiles. The first part of the thesis includes a theoretical introduction to the problematics of storage, then the thesis deals with the analysis of the current state of production and storage in the company. The warehouse design is made with the data about material consumption in 2021. In total, two variants of the warehouse solutions were designed. The difference is in the location of the warehouse and in the handling equipment, that was used. Forklift trucks are used in the first variant and crane handling is in the second. Disposition of the warehouse was solved based on the condition analysis, provided data, and performed calculations for the target year 2023. In conclusion was performed a technical and economical evaluation of the proposals, where both variants were compared. The warehouse design is supplemented by the drawing documentation of both solution variants.
Suitable lubricants for deep drawing of carbon steel plate
Poloch, Milan ; Císařová, Michaela (referee) ; Jopek, Miroslav (advisor)
The task of the diploma thesis is to design and manufacture a testing jig, which will then be used for experimental testing of lubricants for drawing stampings up to 4 mm thick. The drawn material is deep-drawn steel D04. Friction modeling between the traction edge and the retainer was used for a real simulation of the production process. The shaped traction edge was constructed on the basis of a real part. A total of 6 types of lubricants were tested, of which one lubricant in the form of a paste was selected as the reference. The other lubricants were then compared with the reference value of the measured maximum tensile force. The aim was to ensure a lubricant in a consistency other than paste. Of the oil lubricants we received, none of the lubricants approached the optimum values.

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See also: similar author names
1 Císařová, Marie
4 Císařová, Markéta
2 Císařová, Martina
1 Císařová, Miluše
4 Císařová, Monika
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