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Design of a bending tool for U-bending of sheet metal
Kyselá, Lenka ; Štroner, Marek (referee) ; Dvořák, Milan (advisor)
The Bachelor thesis entitled The proposal of bending tool for U-sheet-bending, worked out under the bachelor studies of B-STG branch, presents a proposal of technology of production of a batten in U-form. The assigned part is made from construct steel S235 JR of 2 mm thickness. The proposed bending tool is designed to be used for production of a batten from galvanized steel sheet for assembly of shelves in consumer industry. This proposal of bending tool for U-bending includes technological calculations, drawing documents and technical-economic evaluation.
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Manufacturing of dice
Doušek, Martin ; Lidmila, Zdeněk (referee) ; Podaný, Kamil (advisor)
The advertising (playing) dice is used for playing games and concurrently as promotional device to showing up company in the process of transfer events in full view of the public. The element is made of a structural steel 11 373, the production series are 5000 units per year. Produced component has a lenght of 220 mm, a width of 165 mm and a thickness of 1,5 mm. The variant solution was as optimal technology selected combination of rolling cutting followed by three folds in three separate instruments. It were made technological and structural calculations of which were devised tools, for which was made a basic drawing documentation. For production from total deformation force was chosen eccentric press S 250 with rated energy 2 500 kN. In the next step were fixed costs to produce one piece with the production of a advertising dice with energy, wages and material is 12,75 CZK.
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Production of joint folded out the rule
Šoukal, Hynek ; Podaný, Kamil (referee) ; Žák, Ladislav (advisor)
Project developed within the bachelor study presents a proposal production technology of joint folded out the rule from construction steel 12 060. Thick is 0,5 mm and the production ran is specify at 30 000 units a year. In accordance with literature studies and by calculations have been designed a combined roll forming tool, which consists of a rack with two pillars. This tool will be fix in on eccentric press LEN 10C by SMERAL, Trnava, with nominal press force 100 kN. Trimming punches, holding punch and bending puch are made of tool steel, grade 19 436.3. Lower functional part of the tool ass well.
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Proposal of manufacturing technology of bracket
Tůma, Vojtěch ; Schwarzer, Emil (referee) ; Dvořák, Milan (advisor)
The object of this bachelor thesis is to propose manufacturing process of the holder by using technologies of metal processing. The design of the holder of the headset for light sport aircraft is assigned. The first part of this thesis describes preparation of the semi-finished product by the material cutting, bending methods and final surfacing of the part. In the second section there are evaluated technological aspects of the part, made calculations for dimension of the developed shape of the part, cutting force and cutting work, the total material consumption, minimal and maximal radius of the bend, spring-back, bending force and bending work. The bending jig was then designed according to those calculations. Based on the price quotation for the jig acquisition was performed the economical evaluation and was set the sale price of one piece of the headset holder. The process of the design is then briefly summarized in the conclusion.
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Production of anchor foot
Janda, Petr ; Císařová, Michaela (referee) ; Lidmila, Zdeněk (advisor)
The present bachelor thesis deals with a design of anchor foot used for fixing wooden beams in the manner that, prevents a direct contact of the beam and the subsoil. It is made of bent metal sheet of 4 mm thick steel 1.0038 in the production run of 80 000pcs/year. A combination of shearing and bending at a follow tool was selected from among various options as the most appropriate. On the basis of technological, structural and control calculations, tool were designed and the technical documentation was elaborated. A blank sheet of metal with dimensions of 4 x 1500 x 3000mm (using 94%) was chosen as a semi-finished product. On the basis of the total shearing force, which was greater that the bending force, the same press CDCS 2500 P81 made by the company Dirinler was selected for both tools. Using the economic evaluation, production costs per one anchor foot were calculated in the amount of 102,3CZK, including 30% profit of the company. According to the calculated turning point, the production becomes profitable after manufacture of 12106pcs.
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Production of anchor foot
Kovář, František ; Peterková, Eva (referee) ; Lidmila, Zdeněk (advisor)
The present bachelor thesis deals with a design of anchor foot used for fixing wooden structures to concrete foundation. The anchor foot is manufactured from 4 mm thick sheet steel 11 375 (S235 JR); the batch production is set out for 100,000 pieces per year. From among production possibilities, production on a combination tool was selected as the most optimal production technology. Based on the literature study of cutting and bending technology, an optimal production process of new anchor foot has been designed. For these production technologies, technological and control calculations have been carried out. Using these calculations, the combination tool was designed and project documentation was worked up. With regard to the size of total forming force, the eccentric press LKDR 500 from ŽĎAS Company was selected. In economic terms, the production costs were calculated for one anchor foot and the turning point of 8,232 pieces was found; exceeding this point makes the production profitable.
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Production single parts "Holder for rail mounting on curtains"
Pytlík, Radek ; Štroner, Marek (referee) ; Žák, Ladislav (advisor)
The project developed within the bachelor degree is proposing a technology of manufacturing a holder for rail hinges made of galvanized sheet steel 11 305, 1 mm thick. The production run is set at 20,000 units a year. According to literary studies concerning cutting and bending, as well as on the basis of calculations, cutting in an operating cutting tool and bending in bending tools were proposed. LEN 40 C – an eccentric press and CDC 2 – 7 hydraulic press are used for the production. The cutting punch, cutting die, bending punches, bending dies are made from tool steel 19 436.3.
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Manufacturing of lift bracket
Měřičková, Petra ; Lidmila, Zdeněk (referee) ; Podaný, Kamil (advisor)
The bracket is used to attach the movable mechanism of elevator door. The component is made of constructional steel 11 375 with the thickness of 3 mm. The batch size is 30 000 pcs/year. The rolling cutting method, followed by bending in the combinated tool, was chosen as the optimal technology. Technological and constructional calculations were carried out and the tool was consequently designed. The basic drawing documentation for the tool was implemented. LE 400 press with a nominal force 4000 kN was selected from machinery equipment company. Cost of production of one piece were established, the production becomes profitable for a series of more than 19 133 units / year.
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Manufacturing of wall clamp
Maleček, Michal ; Císařová, Michaela (referee) ; Podaný, Kamil (advisor)
A wall clamp is used for attachment of terrace board to supporting structure. The discussed part is manufactured from sheet metal 11 375.20 which is 2 mm thick. The production series will be 150,000 pieces per year. A combination of shearing and bending in the combined tool was selected from a variant solution as the most suitable technology of manufacturing. Based on technological and structural calculations, a tool was designed with lower pressure pad at the bend point. For this tool was also made fundamental drawings. In view of the total moulding force and work, LEN 40 C press with the nominal force 250 kN (manufactured by TOMA INDUSTRIES s.r.o.) was selected. Necessary manufacturing costs of one part were determined from an economic evaluation. According to a break-even point, the manufacturing becomes profitable for a series of more than 89 196 pieces.
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Manufacturing of wall clamp
Kourek, Lukáš ; Peterková, Eva (referee) ; Podaný, Kamil (advisor)
The project which was work out in bachelor thesis is setting up a production for an wall clamp. Component is made from corrosion resistant steel plate 17 240 thickness 0,7 mm in form of roll. Produce´s series is determined in 500 000 pieces/ year. Based on the literature study was chosen optimal production technology of cutting and bending. Technological and structural computation were accomplished for these technologies, owing to them was projected combined follow-on tool. Eccentric press LEXN 100 C, which reaches expressed force, was chosen by needful size of total forming force 1000 kN.
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