National Repository of Grey Literature 116 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Production of socket wrench
Kryštof, Marek ; Forejt, Milan (referee) ; Císařová, Michaela (advisor)
This thesis propses the design of production of a socket wrench. A socket wrench is used as safety wrench for loosening safety screws of the car wheels. The proper technology for production was chosen based on the component requirements. The component is made by using metal extrusion and heading. The starting blank for metal forming was chosen steel rod made of 1.7131 steel (ČSN 14 220) with a diameter of 26 milimeters. The safety wrench will be made by doublecrank press GTX-300H. Production will be done in three operations.
Productin of injector holder
Štys, Michal ; Řiháček, Jan (referee) ; Císařová, Michaela (advisor)
This paper presents a design of the production process for the clamping nut by cold extrusion. The nut, which is made of material ČSN 12 050, is used to clamp the injection nozzle to the injection system. Subsequently different variants of production were processed, from which the variant B was chosen. For slug a rod with diameter size of 24 mm with toleration f9 made by the company Ferona a. s was chosen. Calculations of process parameters were made for this variant. Based on the parameters the automatic forming machine TPD 630 with nominal force of 6 000 kN was chosen. For the selected machine, operational tools were designed for each forming operation, whose geometry is shown in the drawing documentation. Based on the technical and economical evaluation, the final price of the formed part was set at CZK 18,48.
Production of drinker
Vašíček, Jan ; Dvořák, Milan (referee) ; Císařová, Michaela (advisor)
The diploma thesis of the master's study in the field of M2I-K presents a design of a hollow rotating part made of metal sheet with a tapering bottom. Deep drawing technology was chosen as the best suited option for production without thinning the wall. Stainless steel was chosen as a source material for production parts in compliance to ČSN 172 40. The drinker is produced by three drawing operations where each operation is performed separately on a standalone press CTH 250 developed by ŽĎAS a. s. A sheet measuring 1500 x 3000 x 1 mm with diameter 428 mm was evaluated as the most economically viable for production of a semi-finished product – rondel. For one year production produced in a series of annual volume 100,000 pieces.
Manufacturing of the Wall Bracket Bicycle
Sikora, Marek ; Císařová, Michaela (referee) ; Peterková, Eva (advisor)
This master’s thesis presents a proposal for the technology of manufacturing sheet metal part, which is a part of a bicycle wall bracket. The component is made of steel sheet ČSN 11 325 with subsequent surface treatment by galvanizing. Due to the chosen method of manufacturing with a progressive stamping die, the research part is focused on the technology of shearing and bending. Technological calculations were performed for the most suitable production variant, on the basis of which a mechanical press ANDRITZ Metals with the designation KSTU 2000-20-4G-PSE was chosen. Furthermore, the design of the tool itself is presented, which is substantiated by drawing documentation. At the end of the work, a technical and economic evaluation of the produced series of 300 000 workpieces per year is calculated.
Production of sunshade's part
Obořil, Filip ; Harant, Martin (referee) ; Císařová, Michaela (advisor)
The work deals with the design of the manufacturing technology for the lateral covering fabrication of the sunshade. The part will be made of aluminium ČSN 42 4004 with thickness of 2mm. A manufacturing series comes to 100 000 per year. Some different manufacturing technologies were analyzed and the most suitable of them - the technology of fine-blanking with pushed edge was chosen. It was chosen the vertical laying of components on a sheet of aluminium roll. For production the servomechanical press XFT 1500 speed from FEINTOOL company was selected. In conclusion, economy of chosen manufacturing technology was evaluated.
Proposal warehouse in engineering company
Jarolím, Adam ; Císařová, Michaela (referee) ; Štroner, Marek (advisor)
This bachelor thesis deals with the proposal of a metallurgical material warehouse in an engineering company. In the first part, a research describing the functions and types of the warehouse, material handling and logistics methods was carried out. In the following part, the storage capacity was calculated and two solutions were proposed. Both variants are solved by cantilever racks with extendable arms. The first variant is stationary whereas the other one is movable. Drawing documentation has been made for both variants. Lastly, these variants have been evaluated by the technical as well as economic point of view.
Producing small rage shell
Bek, Martin ; Císařová, Michaela (referee) ; Lidmila, Zdeněk (advisor)
The bachelor's thesis focuses on the production of a small rage shell and the choice of a suitable technology. Brass with the designation MS70 is chosen as the material, according to ČSN 423210. Brass is a suitable material for cold forming. Due to the high number of pieces produced per year, the combination of two technologies proved to be the most economical variant. First technology is back extrusion technology. The input semi-finished product is a calibrated cylinder and the output product is a cup. Subsequently, the cartridge is made by drawing with thinning the wall. This method of manufacturing the shell is advantageous mainly due to the excellent use of the material and, in contrast to sheet metal forming, there is no high proportion of waste from sheet metal. The material is supplied in bars and cut into precise blanks that correspond in volume to the finished shell. Extrusion and drawing tools are shown in the accompanying technical drawings.
Manufacturing of the Ignition Case
Jelínek, Dan ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
The thesis deals with the design of the production of Ignition case. Component is a hollow cover of one channel ignition device, produced by the PBS Velká Bíteš company. It has a constant wall thickness of 0,5 mm and production rate is 15 000 pieces per year. Technology of deep drawing with solid forming tool was picked out of several considered production variants. DC05 deep drawing steel is the material of choice. Based on technological calculations, number of drawing operations needed and forming force was established. Based on those parameters, hydraulic press ZH 10 produced by the Presshydraulika s.r.o. company was chosen for the task.
Sheet Metal Stretch Forming Process
Lorenc, Tomáš ; Císařová, Michaela (referee) ; Peterková, Eva (advisor)
In this work, elaborated in the bachelor study, there is a general overview of the sheet metal stretch forming methods. The stretch forming processes shift the boundary properties of the materials and merge process of drawing and bending into one operation. That's why it's possible to do products from materials, which can not be possible to form by other methods in the same quality Positives of this technology are the minimization of cushioning, the production of complex, precise surface shapes, etc. The contribution of this work is a systematic summary of the principles that should be used as a tool for teaching or as a basis for the wider development of this method.
Hole punching problematics of two layered sheet metal
Kvapil, Štěpán ; Peterková, Eva (referee) ; Císařová, Michaela (advisor)
The thesis is focussed on project of a tool – a hot working clipping punch, where the hole is punched in the upsetting ends of stabilizer. We talk about punching of a two layered semi-finished product, in which burr is formed at the layer interface, which is undesirable from the point of the customer requirement. The stabilizer is mounted in the car chassis, where it is fastened to the axle with screws. The literature study is focused on the theory and problems of punching. In the practical part, several design solutions of cutter faces are discussed, from which three types of face shape were selected. This was associated with a change in the design of the ejector. Two tool materials were selected for comparison. The cutters were tested on an automatic forming centre. Finally, after summarizing and evaluating all the practical experiments, an optimal solution of a tool designed for punching a hole with a two layered semi-finished product is proposed.

National Repository of Grey Literature : 116 records found   1 - 10nextend  jump to record:
See also: similar author names
1 Císařová, Marie
4 Císařová, Markéta
1 Císařová, Martina
1 Císařová, Miluše
2 Císařová, Monika
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