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Optimalization of parts bonded by hot crimping
Liškář, Ladislav ; Řiháček, Jan (referee) ; Lidmila, Zdeněk (advisor)
The thesis describes the procedure for verifying the conceptual ideas of the company. Design and production of prototypes, testing and evaluation, quantifying savings. Two variants of crimped bond were chosen. For each was length of shaft changed to three and four crimped grooves. These prototypes were tested in two static and one dynamic tests. Recommendation for company is continue with other phases of development for shaft with four grooves.
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Numerical simulation of a tube flaring under dynamic conditions
Hlavačka, Daniel ; Peterková, Eva (referee) ; Řiháček, Jan (advisor)
The thesis builds on the project FSI-S-14-2394, in which the biaxial state of tension of longitudinally welded tubes made from material 17 240 was investigated. The experiment was carried out under dynamic conditions on an impact tester, which was designed with structural simplicity and ease of observation of the experiment in mind. Deformation was recorded by high-speed cameras and a dynamometer. Results of the experiment were processed by measuring devices and subsequently used in a simulation created using a software utilizing the finite element method. Simulations were created for samples DA8 and DB9. These samples were selected because they did not crack and were fully stamped. Results of the simulation correspond to the values measured by high-speed cameras and a dynamometer with a small variance. Based on comparison of the results, it can be states that the simulation is technically acceptable.
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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.
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Production of gear wheel
Tesař, Michal ; Řiháček, Jan (referee) ; Císařová, Michaela (advisor)
The work deals with the design of gear production technology and the required production series is 80,000 pieces per year. After evaluating various variants of gear production, the method of fine blanking with a vee-shaped was chosen, on which the literature search is also focused. The part will be made of material E 295 with a thickness of 2 mm and the semi-finished product is a coil of sheet metal. Part of the work is also the design of a tool, which is based on technological and control calculations. A three-acting press from the company Šmeral Brno FMB 440 was chosen as the machine. At the end of the work, an economic evaluation was performed.
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Production of Cover of Regulator Tank
Kudláč, Lukáš ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
This master’s thesis deals with suggestion of production of sheet metal cover in Limid Mohelno s.r.o. Piece serves as cover of regulation device of rail vehicles with visual function and it’s manufactured from corrosion-resistant steel ČSN 17 240 with thickness 1 mm. Esthetical impression is ensured by grinded surface K240. The master’s thesis includes literary studies and problems of chosen technologies, technological calculations and choice of machines including tools. As the best manufacturing technology was chosen punching on TruPunch 1000 and bending on press brake SafanDarley E-Brake E-100. Technical and economical evaluation was made based on selected technology and compared with another manufacturing options.
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Tools for the Deep Drawing Technology
Lukeštík, Tomáš ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
The project includes overview of technology of deep drawing and analysis of individual methods with including their utilization. In the first place, the project is about manufacturing and construction of tools for the deep drawing technology. It also includes description, relations and utilization of individual parts. It also mentions problematics of defects and lubrication.
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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.
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CNC Applications for Laser Cutting
Hruška, Daniel ; Žák, Ladislav (referee) ; Řiháček, Jan (advisor)
The following thesis deals with the theory of laser. In the first part, the thesis is focused on the issue of laser cutting (laser principle, cutting methods, laser division). Furthermore, the thesis is focused on basic theory of automation and NC/CNC control of machines. In the experimental part, the BUT logo was burned out with CO2 laser with the help of the company UnionOcel s. r. o.
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Proposal of production technology of uni-axial rod
Zejda, Václav ; Peterková, Eva (referee) ; Řiháček, Jan (advisor)
The thesis is focused on the proposal of production of a stamped part of the uni-axial rod located in the axle of the truck. The uni-axial rod is made of materiál S420MC with thicknes of 4 mm and the planned series production is 84 000 pieces per year for 7 years. The most difficult point for production is a collar, which create support of the bushing. It is not posibble to produce a required height with conventional one-stage process, which was experimentally verified. In the programm PAM-STAMP there was designed multiple-stage process of the production with the use of numerical simulation. The progressive die was designed for this process of the production. Maximal load of a forming press is 5 057 kN. Production will be located on the forming press Kaiser 8000-50-F5-RKM by ANDRITZ Metals. Maximum force of the forming press is 8 000 kN.
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Manufacturing possibilities of modular cabinet
Valčík, Martin ; Řiháček, Jan (referee) ; Podaný, Kamil (advisor)
Bachelor's dissertation in subject Mechanical Engineering is focused on suggestion and evaluation suitable of technologies which are used for production of modular cabinet determined for switchboard cabinets STX, serial marking IP55/IK09 produced by company TVD - Technická výroba, Inc.. Technologies used for production are punching, cutting by laser or plasma beam, bending, welding MAG/MIG, WIG and spot welding. Surface finish is done by powder painting, zinc plating or anodization. In point of economical and quality view as the best procedure was choosed punching, bending, welding by MAG technology and powder painting.
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