|
|
Manufacturing of ignition cover pad
Dostál, Martin ; Peterková, Eva (referee) ; Podaný, Kamil (advisor)
The thesis solves the design of the technology of production of the ignition cover pad made of steel 11 321 with a thickness of 1 mm with zinc surface treatment. It serves as part of the motorcycle engine sealing system. The part is rotating in shape with a diameter of 35 mm and consists of a central extrusion and a hole. The size of the series is 25,000 pieces per year. Production by a progressive compound tool from a coil with dimensions of 1200 x 500 mm is chosen. 3 forming operations with eating between steps are selected, which are implemented by cutting and embossing technologies. The necessary forming work of 476 kJ and the force of 267 kN are determined, according to which the PRESSIX CNV4 eccentric press is chosen. The machine is introduced into the automated Shungdar SJD and SJK production line, which consists of a straightener, unwinder and feeder.
|
|
|
Expanding of tube ends
Riesner, Jan ; Šlais, Miroslav (referee) ; Peterková, Eva (advisor)
The project is elaborated within frame of bachelor´s studies of branch B2341-3. The project is submitting a summary of methods used for expanding of tube ends. In the first part on the basis of the studies of this problem there was created a set of methods which are used for expanding of tube ends. These methods are divided into three elementary parts according to the technology of production. Next part of this project describes modern methods in use. It is namely expanding of tube ends by radial jaws and method of expanded and towards the end renarrowing figures on the tube ends. In conclusion of this thesis there is treatise on quality checking of expanded tube ends and leakage test.
|
|
|
The Tools and Equipment for a Bending of Tubes
Kašpárek, Jan ; Štroner, Marek (referee) ; Peterková, Eva (advisor)
The bachelor thesis is aimed to make a general overview of used tools and equipment for a bending of tubes. On the basis of literary evidence the list of basic methods used in bending tubes was created. By conducting a survey in bending tubes producers manufacturing programs, various principles of bending tubes were described, which are supplemented with picture documentation. To each method there were mentioned some of the OEMs. Accompanying pictures describe the construction of individual machines and used tools and equipment.
|
|
|
High energy rate forming
Nečas, Petr ; Šlais, Miroslav (referee) ; Peterková, Eva (advisor)
The thesis elaborated in frame of bachelor studies represents literary studies about current production methods applying high energy rate forming. The thesis also presents modern methods and manufacturing processes of methods, e.g. explosive forming, electrohydraulic forming and magneto-impulsive forming, with examples of manufactured components including image documentation and description of their advantages and disadvantages when used in practice.
|
|
|
Conditions of failures generation when bending profiled tubes
Fišar, Luboš ; Peterková, Eva (referee) ; Samek, Radko (advisor)
The thesis describes the knowledge from a round tube bending technology, as a description of conventional and unconventional devices. There are technological parameters in relation to the creation of defects, and equations for determining the bending moment. These knowledge has been generalized and applied to solution the changes of cross-section shape and thickness in the bending of square cross-section. The solution was implemented to specific component (20x2 mm steel tube with two successive radii R57,2 and R131,5). The results of experiments shows that the material is almost rigid-perfectly plastic, in the most stressed areas has a sufficient supply of material formability. Thickness measurement was applied to calculate the approximate center of gravity changes. This shows a shift of 1.4 mm, which is negligible value for the pure bending. The end of the thesis summarizes the deficiencies of current manufacturing technology, which used mandrel is inadequate, wrong located and poor lubrication.
|
|
|
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.
|
|
|
Processes of open-die and die forging
Tvrdoň, Radek ; Peterková, Eva (referee) ; Lidmila, Zdeněk (advisor)
The thesis presents a theoretical summary of forging processes. It deals with the selection of semi-finished product, machine and also forming processes for both types of forging. It explains the usability of open-die forging for making simple parts and die forging for more complex components. While solving the die forging, the thesis is extended with instructions for making a drawing of a forged piece, which nominal dimensions are extended by mentioned additions. The drawing is followed by explanation of procedure of creation a die cavity, which is different for presses and hammers. The thesis also describes the process of calculations of forging force and labor.
|
|
|
A proposal for improvement of arrangement of machinery and social facilities in the workshop complex
Janouškovec, Petr ; Peterková, Eva (referee) ; Štroner, Marek (advisor)
The diploma thesis deals with technological design. The aim is to improve the layout of machinery on production areas and social facilities on auxiliary areas. The method of storage and material handling is also optimized. The thesis consists of a literature research, which explains selected concepts and basic procedures of technological design. The evaluation of the current state will present the workshop complex, its shortcomings and objects intended for improvement. The results of the capacity calculation made for the selected production representative are used as a basis for new designs. The new concepts of production workshops are focused on improving the production process in terms of the way machines are arranged, material handling and work safety. But also to improve the social and administrative background by optimizing day rooms, changing rooms and washrooms. The cost estimate for specific proposals and the selection of the most suitable variant form the final part.
|
|
| |
|
|
Design of manufacturing technology for trackpoint part
Garguláková, Lucie ; Šlais, Miroslav (referee) ; Peterková, Eva (advisor)
The disertation is focused to the technology of fineblanking. It is concerned to a production of part, which will be used as a mechanism for changing the position of seats in cars. The expected production series is 800.000 pieces per year. With reference to the quantity and demanded quality and also accuracy of blank is choosed precisely technology of fineblanking process with pressure edge. The part will be produced on triple-action press produced by Feintool AG Lyss. It is press GKP – F 160 with mechanical-hydraulic drive. This press and specialy create blanking tool produces two blanks per one action.
|
guest ::
RSS feed.