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Manufacturing of car company logo
Franěk, Tomáš ; Šlais, Miroslav (referee) ; Podaný, Kamil (advisor)
Bachelor thesis is submitting a proposal of production technology of logo. The part is made of aluminum sheet 42 4005 and the total production is 100,000 unit/year. Based on the variant solution method of combination of stamping and drawing on the instrument without holder has been designed. Instrument is constructed for fixing to the press LEN 25 C with a nominal tensile force of 250 kN. For this variant calculation part and drawings documents were made.
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Precision forging
Bužga, Petr ; Peterková, Eva (referee) ; Lidmila, Zdeněk (advisor)
The thesis deals with methods, procedures and possibilities of precision forging. After the initial analysis methods of die forging with collar also comprises an overview, analysis and description of methods of precision forging, including a technological evaluation in view of technical possibilities, investment requirements and expected benefits. The main emphasis is laid on the technological conditions, procedure, on the construction of the dies and forging devices.
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Production of the piston rod eye
Vahala, Jiří ; Štroner, Marek (referee) ; Podaný, Kamil (advisor)
The project deal with technology design of production of the piston rod eye from steel 11 523 in the amount of 30 000 pieces. From various possibilities of technology was chosen as the most optimal method the technology die forging. Pursuant to the study of literature and calculations there will be made the forging as a double-edged in single-cavity die on hammer witch several hits in finishing hollow. According to the calculated energy there was selected pneumatic-hydraulic hammer KHZ-4A witch stated energy of 40kJ. The tool was made of steel 19 552, heat-treated according to the drawing documentation. The technical and economical evaluation was focused on the total material cost of the semi-finished material and the cost of manufacturing forging die, which is 1 229 507 CZK in total.
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Technology of high pressure die-castings and influences having effect on their quality
Štipl, Pavel ; Prášil, Tomáš (referee) ; Roučka, Jaromír (advisor)
This diploma thesis deals with the technology of high pressure die casting and especially influences having effect on their final quality. The aim of this thesis is to design the measures to convert casting of the cylinder for chainsaw into the serial production. The thesis contains a description of the production of castings by technology of high pressure die casting, theoretical analysis of the factors with effects on their final quality and practical description of the conversion casting of cylinder for chainsaw into the serial production. The problem of converting to serial production has been solved by several samplings and final test series. Part of each sampling is analysis of defects and design of measures leading to elimination or at least minimization of such defects. On the basis of the production process has been successfully optimized and casting of the cylinder for chainsaw was successfully converted into the serial production. The results of this work also allowed for a smooth conversion into the serial production of another type of cylinder, manufactured by company MOTOR JIKOV.
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Production of chain wheel
Haltmar, Vojtěch ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
This bachelor’s thesis deals with the production of chain wheel using the method of die forging. The wheel is made of C45 steel and is a part of the transmission of construction machinery. Based on the required mechanical properties of the component and batch production which amounts 20,000 pieces per year, three operations die forging is proposed for the production. An intermediate good for the production of the wheel is a cylindrical block with a 50 mm diameter and length of 100 mm. The forming machine for the production is vertical forging press LMZ 1600 P/SH with the nominal force of 16 MN. The trimming press LKOA 200 with the nominal force of 2 MN is used to remove the excess material. Forging dies are produced from tool steel ČSN 19 650 and are based on the technical drawings. The thesis also compares the production of chain wheel by machining and die forging concluding that the use of die forging method saves an amount of 42 CZK per piece.
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Sheet metal part manufacturing by drawing
Moravec, Jiří ; Podaný, Kamil (referee) ; Peterková, Eva (advisor)
The project developed in the frame of the bachelor study branch B2307-00 presents a proposal of acreation technology of a flange, which is to be a model of the roof lift. The part is made of steel 11 320. Due to the anticipated serial production of 10 000 pieces per year, a number of production options is considered. On the basis of literary studies of the issue of drawing, it is suggested a drawing by a metal tool with blankholder. Due to calculations of tensile strength and work, press LEN 40 C is suggested. Drawing tool is designed to require the most of standard components and is solved through the form of a normal rack fastened to the eccentric press LTN 40 C. Drawing punch and drawing die are made of tool steels 19 436.3 and heat-processed according to the drawing documentation.
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Precision forging
Alrawi, Hassan ; Peterková, Eva (referee) ; Lidmila, Zdeněk (advisor)
The bachelor’s thesis describes the characteristics of precision forging and forgings followed by the prerequisites necessary for the implementation of technology. In the following sections the theoretical and technological basis of individual methods is discussed which includes closed die forging, isothermal forging, and finally rotary forging. Also, their advantages and disadvantages and practical use was considered. For future development it is necessary to implement the automation of the entire production process in order to optimize the process as best as possible. There is also a possibility of a large-scale development of new processes to replace some of the existing methods
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Design of crane hook production
Horák, Tomáš ; Štroner, Marek (referee) ; Podaný, Kamil (advisor)
The thesis deals with the design of the production of a crane hook made of C45 steel. After evaluating suitable technologies, die forging on a mechanical press was chosen. Based on the analysis of technological technology, the shape of the part was modified and all necessary additions and limit deviations of forging dimensions were determined. The semi-finished product with a diameter of 65 mm and a length of 380 mm will be formed on a cross wedge rolling mill, bent on a separate press and subsequently forged. The crank forging press LZK 3150 B from the company ŠMERAL Brno a. S., With a nominal forming force of 31.5 MN, was chosen from the calculated forming force. The construction of the dies is based on the ČSN 22 8306 standard and they are made of 19,552 steel with subsequent heat treatment.
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Bus terminal building - static analysis
Fišman, David ; Jurík,, Michal (referee) ; Zich, Miloš (advisor)
The master's thesis deals with the construction and design solution of the bus terminal project in Liberec. The building consists of three floors with different functions. In terms of structural shape, the entire length of the building consists of a cross-section of a two-storey, asymmetrical cantilever suspended on both sides. The main load-bearing structure of the roof contributes along its entire circumference to the load-bearing capacity of the lower ceiling by a system of ties. The design was defined by a feasibility study of the project, which established the concept of the appearance of the structure. The main target of the thesis was to design the solution of the load-bearing structure and then perform static analysis, dimensioning and assessment by the method of limit states according to the corresponding ČSN EN. The solution of the construction consists mainly of reinforced concrete elements which are suitably combined with steel parts. Elements of reinforced concrete are designed as monolitic or prefabricated. For the most loaded two-sided cantilever was designed reinforced concrete variant and prestressed variant. The thesis was made in its extent in a BIM compatible design.
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Issues of drop forging on presses
Jelínek, Tomáš ; Štroner, Marek (referee) ; Podaný, Kamil (advisor)
This thesis is focused on the issue of drop forging on presses. The power forming machines works with calm pressure of the forging part. Their main disadvantage is the forging of the slag layer into the product. Hydraulic and mechanical presses are used for drop forging. This technology is mainly used in series production in most industries. To achieve a quality forging is necessary proper heating of the semi-finished product to the forging temperature. This reduces deformation resistance, tool wear and the required forming force The design of the forging is based on the drawing documentation of the required part. The shape of the product is driving for the dividing plane, the size of the stock, the permissible geometry deviations and tolerances. It is also necessary to take into account the flash groove, the clamping of the dies and the type of ejector. There are many companies in the market that deal with die forging. For clarity, several of them are listed, with an overview of the machine and production portfolio.
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