National Repository of Grey Literature 271 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Tools for turning technology
Bayer, Martin ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
This bachelor thesis is focused on current turning tools. The first part of the work is a short history, which summarizes the development of turning technology. The next part is a basic analysis of turning technology. The third part deals with the used turning tools, which are divided according to individual turning applications. The fourth part divides the tool materials that are used for the production of turning tools. The last part deals with Industry 4.0 and the expected vision of turning tools.
Finishing of large products on a carousel
Straka, David ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
In this bachelor thesis is created a technological process for manufacturing a bearing shield component on a vertical lathe. The thesis deals with selecting the semi-finished product, machines, tools and gauges. The thesis includes a technical-economic evaluation of the proposed production variant, where the costs of material, electricity and tools are calculated.
Wood processing processes and problems of production technology of semi-finished products
Šimo, Samuel ; Osička, Karel (referee) ; Chladil, Josef (advisor)
The diploma thesis is focused on the optimization of a new production line of the woodprocessing factory DCP Timber. In the first part, the work approaches wood in terms of itsinternal structure and its physical and mechanical properties. The second part is focused on themost common methods of cutting the wood material. The third part describes the technology ofconvection drying of wood and the impact of this drying on the resulting quality of woodensemi-finished products. The practical part of the thesis is the solution to the inefficientproduction of the machine of the circular saw, which is an important part of the production line.There is a comparison of different cutting tools and their effect on dimensional tolerances. Inthe next point, thanks to mathematical models, the parameters of maximum feed speed andpower of the electric motor of the spreading saw are determined. Finally, a technical andeconomic evaluation is developed where the payback period is calculated in the case ofinvestment in a power unit with higher performance.
Abrasive waterjet machining of composite materials
Chromý, Jakub ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
This diploma thesis deals with composite materials and the possibilities of processing these materials by machining technologies. The work is divided into several main parts. The first part deals with the analysis of individual types of composite materials. The possibilities of machining composite materials and available technologies of their machining will be explored. Other parts will focus on the application of unconventional abrasive water jet technology to a specific composite material with an experiment on a sample part made of composite material. At the end of the work there will be a technical and economic evaluation of the experiment.
Application of the SinuTrain 4.93 software in milling
Bartuněk, Martin ; Osička, Karel (referee) ; Polzer, Aleš (advisor)
This diploma thesis is focused on the design and preparation of the production of a single front mountain bike chainring, using computer software SinuTrain 4.93. The work has several parts. The first part discusses the possibilities of NC programming and measurement. The next part deals with the design of a chainring, material selection and strength analysis. In the third part of the work, the technological conditions of milling are proposed and the machine is chosen. Next step is creation of NC program including inprocess measurement by workpiece probe and design of postprocess measurement by optical system SOL165. Finally, the work outputs obtained in the form of SinuTrain software simulation are evaluated.
Rationalization of machining of shaped surfaces
Šulcová, Eva ; Osička, Karel (referee) ; Chladil, Josef (advisor)
Diploma thesis deals with milling of shaped surfaces. Theoretical part contains informations about methods of machining according to the cutting process, characterizes CNC machine, structure of CNC programs, cutting tools and types of shaped surfaces. In experimental part thesis described two methods of 5 axis machining: continuous machining and 3+2D machining. In this part there are destribed one specific shaped surface, choice of CNC machines and cutting tools, creation of CNC programs in CAM software and subsequent implementation both methods of machining. Results of both methods are summarized in the final section, specifically in the technical and economical evaluation and in the conclusion.
Technology of aluminum alloy part production
Kostka, Dominik ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
The subject of this thesis is to focus on the casting and machining of aluminium alloy parts. Aluminium alloy castings can be cast by all the technologies available today, but only metal mould casting is the most suitable for aluminium alloys due to the rapid cooling process. The machinability of an aluminium alloy casting can be highly productive but carries the problem of build-up on the tool. The build-up can be avoided by changing the technology, choosing a different cutting material, or cutting conditions. Machining an aluminium alloy casting is more productive and less costly due to the small machining charge and the use of a more powerful machine. When machining apart from a semi-finished round bar, we need to use more machines, more process operations, and this will increase the overall production time of the batch. From a technical and economic point of view, the production costs for a semi-finished product from a casting are one third lower than for a semi-finished product from a cross-section.
Analysis of machining finishing methods
Urban, Martin ; Chladil, Josef (referee) ; Osička, Karel (advisor)
This diploma thesis deals with the analysis of finishing machining methods. The work describes the technologies of grinding, honing, lapping, polishing, tumbling and superfinishing. Furthermore, the residual surface tension after the superfinishing method is analyzed and two possible methods of its measurement are described. An experiment was also performed in which the finishing processes for the bearing spherical roller for axial spherical roller bearing 29434EJ-3, the bearing spherical roller for double row spherical roller bearing 23164CJ-3 and the inner bearing ring for double row spherical roller bearing 22224EKJ N7-2 were described. Six surface roughness measurements were then performed on the surfaces of these components. For the 23164CJ-3 barrel, the mean arithmetic deviation Ra of the profile ranged between 0.59 and 0.70 µm, for the 29434EJ-3 barrel, the Ra value ranged between 0.26 and 0.31 µm, and for the 22224EKJ N7-2 inner bearing ring, between 0.22 to 0.28 m.
Metal waste processing system from cutting processes
Partlová, Veronika ; Osička, Karel (referee) ; Chladil, Josef (advisor)
Diploma thesis will be focuses on the processing of steel chips, explanation of general con-cepts, the division of chips according to their origin, their types and examples of some machines that are related to the chip processing system. It will also describe which law to follow when sor-ting waste like this, how to recycle it and how much this topic is connected with the ecological point of view. The second part of the work will be focused on the processing of the aluminium waste from the production of aluminium components. It contains a specific example of the calculation of a proposal to change the treatment of the waste and the return on investment in this change. The reason why to undergo this change is described too and in what way it will be beneficial.
A water jet in engineering
Kadlček, František ; Chladil, Josef (referee) ; Osička, Karel (advisor)
This diploma thesis deals with the principle of the abrasive jet and describes the devices needed to create it. The thesis presents an analysis of technological parameters and their impact on the quality of the cut. Subsequently, this thesis deals with an experiment, which consists in the design of technology for a sample component, followed by evaluation of surface quality and the economic evaluation.

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