National Repository of Grey Literature 151 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Manufacturing of a Component by Using Hydroforming Technology and Its Optimization
Harant, Martin ; Peterková, Eva (referee) ; Řiháček, Jan (advisor)
The project deals with analysis and optimization of the geometry of the stamped part produced by the pillow hydroforming. The blank consists of two sheets of steel DC01, which is welded by laser beam. The forming process can cause excessive thinning and cracking of the part. By evaluation of mechanical tests is created material model, which is the basis for numerical simulation created in software PAM-STAMP. The outputs are analysis which provide information about critical points, failure pressure, limiting deformations and prediction of springback. Validity of the numerical simulation is verified by comparison with the experimentally obtained data. The comparative criterions are the failure pressure and the material thickness at various locations. Based on the results of the numerical simulation, the optimization of the geometry is created. The optimization uses different values of radius at the crack point.
Production concept of bracket
Kašpar, Jaroslav ; Peterková, Eva (referee) ; Císařová, Michaela (advisor)
The thesis deals with the production concept of the bracket for fixing the drying frame. The component is made of 11 343 steel. The semi-finished product is galvanized sheet with 2 mm thickness. With regard to the required quality of the component and the yearly production quantity (40,000 pieces), a new production technology was chosen based on a literary study by means of conventional shearing in a tool, followed by bending on a press brake. For the selected technologies, technological calculations and a cutting tool were designed, which are dealt with in the drawing documentation. The work also includes technical-economic evalua-tion of the proposed production method.
Production of cooling cabinet
Halabrín, Marek ; Peterková, Eva (referee) ; Císařová, Michaela (advisor)
The thesis deals with presenting an assembly proposal of a cooling cabinet. The cooling cabinet is made from an austenitic steel plate of the ČSN 17 240 grade with a thickness of 1.5 millimetres. The assembly proposal is composed according to the design documentation. The number of the assembled pieces is 200. The manufacturing shall be made with the use of bending and punching. These manufacturing techniques form a part of this thesis. Finn power C5 with a nominal force of 300 kN and Trubend 5170 with a nominal force of 1700kN are the machines chosen for the manufacturing process. These are standardized machines made from a quenched steel and a steel of the 42CrMo4 type. A technological-economic evaluation comparing expenses of the manufacturing also forms a part of the thesis as well.
Proposal of shearing tool for the manufacture of shaped blank
Straka, Jan ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The thesis presents a design of a progressive cutting tool for the production of shaped blanks from sheet metal Usibor 1500 (22MnB5) with a thickness of 1.5 mm. The tool is designed by using CATIA V5 software in cooperation with Žďas, a.s. company. Based on the literature review of the cutting process, cutters were designed, shear clearance and order of operations in the tool were determined. The proposed cutting tool consists of both manufactured and standardized parts. Tool parts fall out of the chute onto the conveyor belt. The tool is designed to operate on an AIDA 1000 excentric press with a nominal force of 10,000 kN. Cutters that are not standardized are made of tool steel and heat treated according to drawing documentation.
Production of IT case
Holub, Dominik ; Peterková, Eva (referee) ; Lidmila, Zdeněk (advisor)
The master’s thesis deals with proposal of technological process for production of computer case in EMKO Case a.s. Computer case is manufactured from a DX51D + Z275 steel sheet with thickness 1 mm. For manufacturing were chosen technology punching and press-brake bending as the best technologies. Master’s thesis contains literary studies of these chosen technologies. Based on literary studies were made technological calculations, proposal of technological process and choice of machines. For punching was chosen machine TRUMPF TruPunch 2000, for press-brake bending hydraulic machine TRUMPF TrumaBend 50V. For chosen solution is made technical and economical evaluation.
Production of wing rib
Ivančo, Radek ; Peterková, Eva (referee) ; Císařová, Michaela (advisor)
The thesis presents a proposal of production of a molded part from the aluminum alloy of group 2024 (dural). Based on the theoretical study and the requirements of the company was designed a cutting tool with a rounded edge for cutting the unfolded shape of the part on the eccentric press LEN 40 C. A new forming tool from textite material for fluid press Quintus QFC was designed. The parts of the cutting tool were designed primarily from normalized (purchased) parts. Manufactured punch and shearing die are made of commonly available tool steels and processed on the attached drawings. The result of the thesis is a recommendation to invest in a specialized workplace for the production of a unfolded shape and reduction of laboriousness adjusting after forming.
Single Point Incremental Forming
Brabec, Martin ; Podaný, Kamil (referee) ; Peterková, Eva (advisor)
Incremental metal sheet forming has gone through a period of development and enjoys increased attention of industry for its unique benefits and properties. This work aims for an up to date state-of-the-art review of incremental metal sheet forming focused mainly on single point incremental forming appended by a review of used tools, machines and applications.
Straightening technology of semi-finished products
Sikora, Marek ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The main aim of this thesis is to create a general overview of processes that are applied in straightening semi-finished products. These processes include manual methods as well as mechanical ones. This work also informs about advantages and disadvantages of these processes based on published researches. This paper is supposed to give a basic overview of categories of machines and tools that are used in certain straightening technologies.
Production of exhaust pipe
Frňka, Martin ; Peterková, Eva (referee) ; Císařová, Michaela (advisor)
This work introduces a design of a technology of producing an exhaust pipe. It's semi-finished product is a pipe about a diameter of 76 mm, and the thickness of it's side made of steel 11 320 is 2 mm. Based on a literary study of problematics of bending there was designed bending by minding with a ball thorn and an exterminator. The whole bending set will be fixed to a machine ELECT 150. The procesed production process includes chopping after bending on a circular saw which is followed by insertion of a complete product on a pallet.
Using of elastomers in forming technology
Drda, Ondřej ; Peterková, Eva (referee) ; Podaný, Kamil (advisor)
The purpose of this graduation thesis is to investigate and summarize the usage of elastomeric forming, which represent a uniqe method of cold forming in which the elastomeric pads overtake the function of the solid part in a forming machine. The most distinctive feature of elastomeric forming is its low price and a wide range of usage. It can be applied also to metal materials with finished surface. However the major disadvantage of this method is the need of an enormous pressing force. The elastomeric pads fall into two main categories – the open and closed ones. The open type is mostly used for metal sheets bending and roll bending, whereas the closed type finds even greater usage in processes like shearing, drawing (Guerin stamping), deep drawing (Marform, Maslenikov technique) and radial expanding. The thesis further describes the elastomers´ technical features, deformation withstandings, forming principles and their general usage.

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1 PETERKOVÁ, Eleonora
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