National Repository of Grey Literature 331 records found  1 - 10nextend  jump to record: Search took 0.02 seconds. 
Streamlining of the production of a component into the aircraft engine
Bula, Tomáš ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
The thesis deals with innovation of the technological process of casting called Fan support in the company Honeywell Aerospace Olomouc s.r.o. The first part of the thesis is dedicated to component description which is made of titanium alloy Ti-6Al-4V. The section is also devoted to jet engine TFE 731, which is the engine where our particular component has specific function. Another part is focused on theoretical analysis of material characteristics of titanium alloys and their machinability. In the following section there are considered alternatives of machine suppliers with subsequent selection of the multifunctional CNC milling-turning center DMC 80 U duoBLOCK equipped with Jetstream technology. The transfer of the production to another machine is accompanied by an innovation of the technological process, making new fixtures and optimalization of the cutting tools. The section is also dedicated to static analysis of the component in operation 7 supported by finite element method (FEM). The final part of the thesis includes evaluation of the costs and savings achieved by innovation of the technological process.
Possibilities of CAM software NX in programming CNC machine tools
Forbelský, Jiří ; Kalivoda, Milan (referee) ; Polzer, Aleš (advisor)
The thesis details the NX CAM application and its capabilities in the production of specific shapes on selected components. It includes a selection of machinery, respective tools, together with shanks and clamping cones, as well as selection and verification of the cutting conditions. The process is accompanied by a graphic simulation and complemented by an economic evaluation.
Sinumerik 840D sl. tools for programming of CNC machines
Mešina, Matej ; Kalivoda, Milan (referee) ; Polzer, Aleš (advisor)
The thesis deals with the design and production technology of the front hub for a mountain bike. The research focuses primarily on the various control systems of CNC machining apparatuses. The second chapter is devoted to the elemental differentiation of hubs, the concept of personal design of the hub, and the characteristics of the materials for its production and its verification using the FEM analysis. The third chapter deals with the design of a workpiece, instruments and the manufacturing process itself. The design of an NC program constructed in the SinuTrain 4.8. software is dealt with in the fourth chapter. The last part is devoted to the technical and economic evaluation of the proposed solution.
Thermography in engineering
Koten, Jakub ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
This work deals with non-contact measurement of surface temperatures. The aim of the first part is to explain basic terms, principles and ways of measuring temperature. Furthermore, there is an overview of thermal imagining cameras usable in industry. In the practical part there is a theoretically suggested experiment, which monitors the dependence of the surface temperature on the size of the cross-section of the workpiece during the turning under unchanged cutting conditions. Experimental measurements are executed with using thermocamera ThermaCAM SC 200 and they are evaluated in software called Researcher.
Contactless measurement of surface temperatures in mechanical engineering
Frňka, Tomáš ; Forejt, Miloslav (referee) ; Polzer, Aleš (advisor)
The subject of this thesis is the incorporation of the contactless temperature measurement of surface temperatures among other methods of temperature measurement with the analysis of (individual) advantages and disadvantages. The study is focused on the measurement and finding alternative protective clingfilms for thermo camera “Flir SC2000” and possible ways of their usage.
Spline trajectory in 5-axis milling
Ohnišťová, Petra ; Polzer, Aleš (referee) ; Píška, Miroslav (advisor)
The aim of this work is an introduction to the five-axis milling with polynomial trajectories. Part of this thesis is a description of the entire process of the forward engineering, a definition of different methods of trajectory generation, a basic mathematical description of the machined surface and generating a CNC program for five-axis machining centre with the Heidenhain control system.
Sinumerik tools for programming of rotational machine part
Slavík, Daniel ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
This diploma thesis deals with a manufacture of rotating mechanical component on CNC lathe machine with Sinumerik control system. At first the chosen component is briefly described and then NC program is created in Sinutrain Operate 4.5 system. Afterwards the program is verified by simulation. Within the diploma thesis a technological documentation is elaborated that contains a new technological course of manufacture and a manufacture drawing of the component. The final part of this thesis is focused on technical-economic evaluation of newly designed manufacture with verification of cutting conditions and required output of the CNC machine. The outcome of the thesis defines an hour rate of CNC lathe and price of component that regards to newly presented manufacture.
Analysis of chip forming mechanism with a high-speed digital camera
Tichý, Vojtěch ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
This thesis covers matters related to high-speed digital cameras and their usage in various spheres of human activities, mainly in research of chip forming. Thesis summarises important knowledge needed for creation of high-speed recordings and choice of suitable lenses. Focus is taken on creation of high-speed recordings of chip forming process in turning operation outside grooving by using of different types of chipformers. Main goal is to verify its functionality in specific value range of feed per revolution.
Tools for threading and their use
Veselý, Václav ; Polzer, Aleš (referee) ; Sliwková, Petra (advisor)
The bachelor’s thesis Tools for threading and their use deals with issues connected to tools, the materials used and their usage in the field of mechanical engineering. Individual parts of the thesis cover types of tools for threading, methods of threading and materials suitable for tap making. Further, the range of monolithic milling taps in the producers’ supply is also analysed.
Vibrations at machining of metals
Fiala, Zdeněk ; Polzer, Aleš (referee) ; Píška, Miroslav (advisor)
The diploma work deals with a mathematical description of vibration and its generation when machining. Moreover, some techniques of modal parameters measurement in the theoretical part are included. The practical part is designed and based on the measured natural frequencies of the machine with specific tool and materials. In conclusion, a lobe diagram stability for semiautomatic lathe SPN 12 CNC and selected machining operation is specified by means of apparatus.

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