National Repository of Grey Literature 199 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Production of the distributor by non-convential forming technology
Blažek, Matěj ; Peterková, Eva (referee) ; Jopek, Miroslav (advisor)
The thesis is focused on the evaluation of the possibility of manufacturing a distributor body used for distribution of heat-bearing medium in underfloor heating. For the part, due to the series of 100 000 pieces·year-1, the technology of high-pressure hydrofroming without active action of axial presses is chosen. The original solution with a forming pressure of 58,5 MPa did not lead to success and an optimization was necessary, where the pressure was increased to 158,5 MPa, which also did not lead to success. This was followed by a further optimization consisting of hot forming at 700 °C and a pressure of 158,5 MPa, again with no successful solution. The last possible treatment option of changing the material to 11 321 steel and pressure 134,2 MPa was not successful and the high pressure hydrofroming method with passive action of axial dies is not recommended for industrial practice. The final step was an economic evaluation, where the price per piece was determined to be 133,3 CZK with a 20% margin. Considering that the product is suitable the profit will start to be generated after the production of 140 460 pieces.
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.
Optimisation of punch tool for produce holes of bearing cage
Matail, Petr ; Jopek, Miroslav (referee) ; Peterková, Eva (advisor)
The thesis is focused on analysis of causes of blanking punch cracking, which is used for piercing holes of barrel bearing cages and designing of new construction solution by changing shape of blanking punch. Multiple variants of rounding shearing edge and chamfering shearing edge was designed. The current state and designed variants were analysed by simulation in Simufact Forming program. The variants were compared by shear force progress, equivalent stress, contact pressure in blanking punch and effective plastic strain in blank cage. According to mentioned criteria the best solutin with rounding shearing edge by 0,7 mm and chamfering face of blanking punch by 10° was chosen.
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.
Manufacturing of a Car Door Lock Segment
Vrtiška, Roman ; Peterková, Eva (referee) ; Řiháček, Jan (advisor)
The bachelor thesis is focused on production of car door lock segment, which is made of steel 15CrMo5 with a thickness of 4 mm. Based on the established production quantity of 280 000 pieces per year, the prescribed dimensional accuracy and surface quality of the cutting surface, the technology of fine blanking with vee-ring is chosen. In the practical part of the work, technological controls of the manufactured part are carried out. A coil of the sheet metal as a semi-finished product and cutting plan with the highest percentage utilization were chosen. For established quantity production, 61 pieces of coil weighing 500 kilograms are needed. Based on the technological, control and construction calculations, the tool is constructed, including drawing documentation. Due to the calculated overall force Fc = 1 085,85 kN and the top view area of the tool the triple-action mechanical press XFT 1500speed is chosen. The press is part of the line with the FBA 6/300 coil processing line.
Laser Forming
Kameník, Jan ; Peterková, Eva (referee) ; Řiháček, Jan (advisor)
The work focuses on the use of laser beam in forming. The basic types of solid-state and gas lasers and their interaction with the material are described. It also discusses the possible mechanisms of bending in sheet metal and tubes. Subsequently, the paper discusses analytical and numerical models for determining the magnitude of the bending angle. The final part of the thesis deals with examples of laser-formed products and other possible applications in engineering.
Manufacturing of protecting cover by compound tool
Janáč, Jakub ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The master‘s thesis deals with a proposal of the manufacturing of a protective cover, which is sheet metal part with a thickness of 3 mm from the EN AW-3103 alloy. According to the analysis of possible technologies, the most effective option is production in a progressive die. This combines cutting and bending and these technologies are analyzed in a literature study. Based on the assessment of the technology control and control calculations a die is designed. This die produces the part in five steps. As a suitable machine an eccentric press Vaptech PE160MA is chosen.
Manufacturing of kitchen sink
Vágner, Lukáš ; Peterková, Eva (referee) ; Jopek, Miroslav (advisor)
The project deals with the design of production of the kitchen sink made of chromium-nickel austenitic steel 1.4301. Material thickness of the sink is 1 mm. The annual production series is 30,000 pieces. After considering the size of the produced series, a combination of shearing and deep drawing was chosen as the production technology. Shearing of the circular shape was combined with the execution of both draws into one production tool. For this design, the necessary calculations were performed along with verification by simulations in the PAM-STAMP program.The tool is clamped in a hydraulic press PO 400, which has all the necessary parameters. The coil blank is guided through the unwinding and straightening device Compact Line GLK3-1000. The selling price of one sink was set at CZK 1,300. Production becomes profitable after producing 7540 sinks.
Manufacturing of the TV Wall Bracket
Gregor, Radek ; Štroner, Marek (referee) ; Peterková, Eva (advisor)
The master 's thesis deals with the design of a tool for a TV bracket with an expected production of 300,000 pieces per year. After a review of possible production technologies, production in a progressive compound tool that combines shearing and bending was chosen. DC01 material with a thickness of 2 mm in coil was selected for the production of the part with a 52.23% utilization according to the selected cutting plan. Then, a manufacturing process was established for the production of the part, which will be made in six steps. Furthermore, the total forming force of 893,1 kN and the forming work of 1355,8 J were calculated. The mechanical press was equipped with an automatic material feeder ARPL RAL 250 from Attl a spol s.r.o. After the design of the combined progressive tooling, the functional dimensions were determined and control calculations for the critical sections were performed, all of which were met.
Manufacturing of ceiling base by sheet metal forming
Hořava, David ; Podaný, Kamil (referee) ; Peterková, Eva (advisor)
The thesis is focused on the proposal of manufacturing technology of the ceiling base, which is produced in series of 100 000 pieces per year. The part is used to attach the support bracket to the ceiling and made of steel sheet with a thickness of 2 mm. The chosen material is galvanized DC01 steel. Production in a progressive die was chosen as the most suitable production option. The semi – finished product is a coil of sheet metal strip. In the proposed tool, which combines shearing and bending operations, the component will be manufactured in four steps. The forming force required for the production of the part is 1 510,6 kN. The eccentric press CC160 from the company Mecanica Exacta was selected for the production.

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1 PETERKOVÁ, Eleonora
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