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Manufacturing of a Segment of the Seat Positioning System
Horák, Jan ; Peterková, Eva (referee) ; Řiháček, Jan (advisor)
The bachelor's thesis is focused on the design of technology for the production of a seat positioning system made of sheet steel ČSN 11 373 with a thickness of 2 mm. Due to the adjustment of the production quantity of 200 000 pieces per year, the required dimensional accuracy and surface quality of the cutting surface is used by the technology of production of fine blanking with a pressure edge. Part of the work is the implementation of technological and construction calculations, including the design of the cutting tool with the necessary drawing documentation. An alternating arrangement of cut-outs for a coiled sheet metal blank (Ds = 1 200 mm, ds = 500 mm) is chosen as most suitable in the work, which means the use of 36 coils for a given annual production. In the final part of the work, a three-acting hydraulic press Feintool HFA 8800plus is chosen for the production of the component, which is incorporated into the automated production line FBA 6/300, including all necessary equipment for handling, unwinding and straightening the cut sheet metal strip.
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Manufacturing of pin with flange
Procházka, Pavel ; Řiháček, Jan (referee) ; Podaný, Kamil (advisor)
The bachelor thesis is focused on the design of the towing hitch, which is used in the tractor. The component will be the production of a die forging technology made of low-alloy steel 13 242. The material is supplied as hot-rolled bars with a diameter of 60 mm and a length of 6 000 mm. The size of the production series has been set at 25,000 pieces per year. Due to the issue and the size of the forging, the component will be made on a power hammer. The machine Šmeral KHZ 8A, appears to be a suitable machine as the forging work was calculated at 89 kJ. The technical - economic evaluation takes into account material costs, which amount to 1,364,271 CZK. The die is made of tool steel 19 663, its purchase price is 73 000 CZK.
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Manufacturing of metal yoke of electrical socket by compound tool
Svozilová, Lucie ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The project elaborated design of technology production of the metal yoke of electrical socket made of steel DX51D + Z200 by compound progressive tool. Stock material for series of 200 000 pieces is a strip of coil. Manufacturing is realised in five steps consist of cutting, bending and flanging. For flanging was constructed a special mechanism for whose is necessary to use hydraulic counterholder, which is sold as a special peripheral equipment of manufacturing machine. The machine choice was adapted to this criterium. The servopress DSF-N1-800A was chosen as a manufacturing machine, which is made by AIDA company. The press can produce force of 800 kN and make work of 4000 J. Selling price of a one yoke is 24,5 Kč when the profit is one hundred percent. The break-even point comes with 58 140 made piece.
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Optimization of the Wire Drawing Process
Kabilka, David ; Světlík, Radim (referee) ; Řiháček, Jan (advisor)
The aim of work is to present and analyse assessment of the current state and at the same time the proposal of adjustments to the technology or parameters, the introduction of the wire into the drawing machine. The problem arises when the introduction of wire with a diameter of 14 mm from the material CK 67 to the drawbenches Schumag. If we introduce the wire into the drawing machines with two primary beams leads to a buckling of the wire and pack between the drawing die and the boot device. For the introduction of wire are used hydraulic boot collets, which are controlled semi-automatically. In connection with professional studies and on the basis of the calculation, simulation and practical experiment have been identified the conditions allowing the current method of deployment of wire to use.
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Utilization of Liquid in Forming Processes
Horňák, Matúš ; Podaný, Kamil (referee) ; Řiháček, Jan (advisor)
This diploma paper submits a literature retrieval of forming processes, which use liquid as a main or additional forming medium. These methods are used in practise in mass-produced complex components, mainly in automobile and aeronautic industry. They are perspective due to their variability, geometric accuracy and the ability to form components which cannot be made using conventional methods. The thesis introduces principles, submits specimen of units prepared by methods, such as hydro-mechanical pulling, Flexform or processual hydroforming, and evaluates their advantages and disadvantages.
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Design of Tool for Louvers Production
Hejna, Jaroslav ; Žák, Ladislav (referee) ; Řiháček, Jan (advisor)
This thesis presents a tool design for production of embossments into the bottom part of the agricultural silo made of Dx51D material. The research analysis all technologies used for embossing, that is cutting and shallow drawing. This is followed by a chapter on simulation. The tool design itself is described. Its principle is based on tools for punching machines. The upper half of the tool is composed of a weldment to be clamped into pressing machine, into which are mounted functional parts in the form of inserts. The lower tool consists of several bolted plates, punches and a holding plate, which is located on the springs. In order to achieve correct design, necessary calculations were carried out and it was all confirmed by simulation in ANSYS. The two tool halfs are guided by pins attached at the edges of the lower tool. The technical - economical evaluation compares the work of the proposed tool with other possibilities of embossing.
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Manufacturing of a Cable Holder
Šimka, Radek ; Žák, Ladislav (referee) ; Řiháček, Jan (advisor)
The bachelor’s thesis proposes a design for the production technology of the cabling holder, situated in the outdoor part of the air conditioner. This product is made of steel sheet DC01 with a thickness of 1 mm. The production of this holder is set to be 200 000 pieces per year. A progressive die tool was selected as the most suitable type of production technology, based on a literature study of various production technologies. This enables to combine cutting and bending of steel sheets with the use of one tool device. Manufacture will be performed using a mechanical eccentric press LEN 63 C. All the necessary requirements of this device are satisfactory for the production.
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Wire Drawing Technology
Štys, Michal ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
The paper presents current research on the technology of wire drawing with focusing on the analysis of process factors, their calculation and influence on the process itself. The research describes drawing methods and technological process of wire drawing. The work also deals with geometry and die materials and their effects on process quality and tool wear. Subsequently this thesis analyses currently used machines and their advantages and disadvantages. As well as their suitability for use depending on the materials of the drawn wires and economic profitability. At the end of the thesis, unconventional methods of wire drawing and their future development estimation are presented.
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Importance of Upsetting Test for Numerical Simulation of Forming Processes
Tinka, Petr ; Dohnal, Ivo (referee) ; Řiháček, Jan (advisor)
The thesis deals primarily with the creation of a material model for numerical simulation using an upsetting test for steel 17 240, a layer of Delta 144 was applied on the steel. From the obtained values of force and path, a material model was created which serves for characterization material for numerical simulation. The simulation was performed in ANSYS Workbench 19.0. From this, force and path are obtained, which is used to compare with the upsetting test. It is clear from the comparison that the values do not differ too much, and it is possible to use this material for numerical simulation.
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System for measuring of thermal efficiency of solar absorbers
Řiháček, Jan ; Podaný, Kamil (referee) ; Mrňa, Libor (advisor)
The thesis deals with the measurement system for determining the thermal efficiency of the newly developed types of solar absorbers. Measuring equipment allows simultaneous indoor or outdoor thermal efficiency detection of up to four samples absorbers. Emphasis is placed on the flow and heat transfer medium temperature changes. For this purpose is used Biotech FCH-m-POM-LC and LM35DZ sensors. Sensor signal is transferred to a PC using the measuring module NI USB-6221. Here it is further processed by proposed evaluation program. The software is implemented in LabVIEW integrated development environment. In a final part are performed a verification measurements to assess system performance and evaluate the thermal efficiency of various types of solar absorbers. This path is also demonstrated high efficiency applications absorbent layer coating color RABSORB 5.
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