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Manufacturing of a Wheel Nut With Outer Hexagon
Dvořák, Ondřej ; Forejt, Milan (referee) ; Řiháček, Jan (advisor)
The thesis deals with the design of a production technology for a wheel nut with an external hexagon, a tapered seating surface, and a shank. The production series is set at 200,000 pieces per year. The raw material is a coil of wire with a circular cross-section and a diameter of 20 mm made of steel 11 320. After evaluating the specified requirements and conducting a literature review, the production technology of cold forming is selected, specifically the combination of extrusion and upsetting. Three basic production processes are designed, which are subsequently optimized, and their manufacturability is verified using the simulation program Simufact Forming 1.6. For the most suitable production variant, the flow stress, deformation resistance, and forming forces are calculated for each operation. By comparing with the simulation results, the total force required to produce the given nut is determined, which is crucial for selecting a suitable machine. The forming machine used is a CBF 204L with a nominal force of 3,500 kN, for which a three-operation tool is designed. During the tool design, the internal radial pressure acting on the die is also verified. The results indicate that it is necessary to use encapsulation using a single clamp for the second operation. The tool is constructed to be compatible with the parts of the chosen machine according to the provided layout and available machine parameters.
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Manufacturing of the Oil Drain Tub
Hruška, Daniel ; Žák, Ladislav (referee) ; Řiháček, Jan (advisor)
The following thesis deals with the design of oil bath production by deep drawing of sheet metal. In the first part the thesis is focused on acquaintance and analysis of the proposed part. The thesis also deals with the issue of deep drawing of metal sheet. In the practical part of thesis is the design of production technology, technological calculations, the design of the drawing tool and the selection of suitable machine. The last part of the thesis is devoted to numerical simulations to verify the manufacturability of the part.
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Analysis of manufacturing of component by elastoforming technology
Lorenc, Tomáš ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
In this thesis, processed within the master's degree is the analysis and proposals for modification of production stagnation ribs aircraft L-410. The part is made of aluminum alloy D16. More specifically, it is a 0.8 mm thickness sheet, which after the milling of the blank molded in the basic non-rigid tool by Guerin. After analyzing the entire manufacturing process and the determination of the critical points due to a series of tests carried out were evaluated possible variants production innovation. Proposed changes and their optimization can reduce the labor intensity deleting some time being necessary preparatory and finishing operations manual. It also increases the repeatability and streamline current production panels.
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Production of ceiling light
Kvasnička, Jan ; Řiháček, Jan (referee) ; Císařová, Michaela (advisor)
The manufactured component is the inner part of the ceiling lamp. It is made of 17 240 steel in a series of 100 000 pieces/year. A combination of tool cutting and deep drawing without thinning the wall was chosen from the possible production technologies. The diameter of the blank from which the resulting shape is pulled out was calculated to be 400 mm. It will be cut from an unwound coil of sheet metal, the inner diameter of which is 400 mm and the outer 1000 mm. A drawing tool was designed for forming and it's functional parts were made of 19 436 steel. The tool is placed in hydraulic three-acting press PO 160/100 from company Dieffenbacher. The press is part of a line which includes an unwinding device, a straightening device and a cutting tool.
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Drop forging of flange
Bednář, Jaroslav ; Řiháček, Jan (referee) ; Štroner, Marek (advisor)
The aim of the project developed within the framework of the Bachelor's degree in Institute of Manufacturing Technology is the design of the production of a flange forging by die forging from alloy structural steel 14 220 (1. 7131). Size of production is set on 100 000 pieces per year. Based on calculations, the LMZ 4000 vertical forging press with a forming force of 40 MN is selected for production. Three production operations are selected for a given production. Forging dies are designed using an ejector. The material of the dies is alloy instrumental steel 19 552.8 (1. 2343). At the end of the project, a technical and economic evaluation is carried out where a price comparison and costs for the production of die forging and machining are given.
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Design of a robotic workplace
Jaša, Lukáš ; Řiháček, Jan (referee) ; Štroner, Marek (advisor)
The bachelor thesis is focused on the design of a robotic workplace. In the initial phase, the input requirements of the workplace are defined, according to which the final design must be processed. Furthermore, the text contains a recherche of the current state of robotization. The third chapter is generally composed of four variants of different workplace designs. In the first of these four variants, all components are described in detail, which are also included in the remaining three designs. This variation was chosen as the most suitable possible solution. The reasons why this workplace is considered to be the most ideal are also described in detail in the chapter. In general, the robotic workplace is designed for welding steel frames of power generators. All manipulation is ensured by a welding robot together with a positioner. The operation of the entire robotized complex is performed by only one operator. In the fourth chapter, in addition to the reasons for choosing the most suitable variant, all weld lengths on the frame are calculated together with the time of complete manipulation and welding time. It also shows the time for which the designed manipulator is able to make the final product in the form of a weldment. The time for which the frame was manufactured by hand welding is also given for interest. The given results show a clear increase in production productivity in the designed workplace.
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Manufacturing of the Body Part of an RC Helicopter
Kománek, Michal ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
This thesis deals with the production of manufacturing of the body part of an RC helicopter, made from aluminium sheet with a thickness of 1 mm. Set production series is 200 000 pieces per year. After researching suitable production methods, the technology of progressive stamping was chosen. Based on theoretical knowledge has been design a production plan with the highest productivity. Technological and design calculations serving as a basis for tools and press selection are also an essential part.
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Manufacturing of the Wall Bracket
Fridrich, Ladislav ; Jopek, Miroslav (referee) ; Řiháček, Jan (advisor)
The bachelor's thesis deals with a suitable design of production technology for a wall bracket, which will serve as a speaker positioning system. The part is made of non-alloy structural steel S 235JR with a thickness of 3 mm. The production series is set at 200,000 pieces per year. After evaluating the production possibilities, the technology of bending and progressive cutting is chosen, which are combined in a combined tool. Subsequently, the most suitable arrangement of the part on the sheet metal strip is selected and the sheet metal coil is selected as a semi-finished product for production. Furthermore, technological calculations are performed and drawing documentation of the tool is made. Based on the calculated values, the production machine Mecanica Exacta model CC250 from the company Formetal s.r.o.
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Manufacturing of a jet half coupling
Ostřížek, Jan ; Štroner, Marek (referee) ; Řiháček, Jan (advisor)
The work deals with the design of the production of a jet half coupling made of aluminum alloy AlMg1Si1Mn. At the beginning of the work is an analysis of possible production methods, of which the most suitable method of die forging. Based on the evaluation of technological technology, shape adjustments are made, additions and dimensional deviations are selected. A semi-finished product 50 x 108 mm is determined from the forging volume. The crank press LZK 1600 P / SH is chosen for forging. According to the standards, 2 forging and 1 finishing dies are designed for the forging. At the end of the work is also given an analysis of cutting, on the basis of which the press LKOA 200 is chosen.
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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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