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Efficiency Improvement Proposal of Production of Semi-Finished Products for Gun-Barrels
Zemánek, Patrik ; Botek, Jan (referee) ; Sedlák, Josef (advisor)
This thesis is focused for manufacturing of a gun barrels and his issues. In thesis is involved introducing of the company Česká zbrojovka a.s. and definition of hand fired guns. Written analysis present the state of a technological process and describe an individual phase of manufacturing of the semi-finished product of gun barrel and the following conclusion of a complex manufacturing of a gun barrel from the semi-finished product to the stand, when the gun barrel installed into the gun is. Subsequently are suggested possibly solutions of manufacturing rationalization and possibly purchasing of a new modern CNC machines. In the end is accomplished a technical-economic evaluation, which compares existing and suggesting of the technology.
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Technological possibilities of tool for machining large diameter holes
Hapala, Václav ; Kalivoda, Milan (referee) ; Jaroš, Aleš (advisor)
This bachelor thesis is focused to compare technological possibilities of machines metalworking large diameters in company SV Olšovec and rival companies. There are methods such as technology of drilling, boring and description of tools for drilling large diameters described in practical part. Experimental part includes comparison of a tool from a company SV Olšovec and a tool from rival D’Andrea´s company, cutting inserts used and comparison of technological possibilities particular machines.
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Foundations in Volume Unstable Soils
Legut, Dana ; Weiglová, Kamila (referee) ; Hauser,, Jaroslav (referee) ; Zdražil, Karel (referee) ; Vašina,, Josef (referee) ; Paseka, Antonín (advisor)
This dissertation is concerned with the foundations in volume unstable soils and objects disorders which are related to this. The thesis was focused on the study of clay and loess soils which are abundant in the geological profile of the Czech Republic. First, the formation of the two groups of soils is introduced, then their properties are examined and finally the influence of vegetation on the former type and the influence of collapsibility in the latter type are investigated. The conclusion is, in fact, a recommendation on the design of structures so that the system of clay / structure is not damaged and that structures are not subject to renovations. Several instance of problems with structures are discussed which were subject to structural repairs employing both a civil and geotechnical engineers.
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The design of plate horizontal boring mill
Vondrák, Pavel ; Holub, Michal (referee) ; Pavlík, Jan (advisor)
This master's thesis describes a design of horizontal boring mills. The first part is dedicated to description of the various types of these machines and their accessories. There are also described drives and linear guideways. There is a list of plate horizontal boring mills of Czech and foreign producers. The second part of this thesis deals with designing of comlete machine's bed and its slides (X-axis). Casting of the bed and its slides are designed for universal machining to the use of rolling or hydrostatic guideways. The drive of X-axis is also designed and it works in master/slave mode. The final result of this master's thesis is a 3D model of the machine in two variants, with hydrostatic and rolling quideways. Machining drawings of the bed for both variants are attached to this thesis.
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Solution technology of part "víko" in the condition of a middle-sized company
Kavan, Petr ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
The diploma thesis is concerned with evaluation of actual production technology of part “hydraulics cover” and with design of new, progressive variation machining of this part. Solution is focused at first on rationalization of cutting tools and choice of suitable cutting tools. An effort is to achieve shorter production time and decrease costs on production of component. With this problem is related alteration of technological documentation and technical economic evaluation for determination return rate of investments into progressive cutting tools.
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Efficiency Improvement Proposal of Production of Semi-Finished Products for Gun-Barrels
Zemánek, Patrik ; Botek, Jan (referee) ; Sedlák, Josef (advisor)
This thesis is focused for manufacturing of a gun barrels and his issues. In thesis is involved introducing of the company Česká zbrojovka a.s. and definition of hand fired guns. Written analysis present the state of a technological process and describe an individual phase of manufacturing of the semi-finished product of gun barrel and the following conclusion of a complex manufacturing of a gun barrel from the semi-finished product to the stand, when the gun barrel installed into the gun is. Subsequently are suggested possibly solutions of manufacturing rationalization and possibly purchasing of a new modern CNC machines. In the end is accomplished a technical-economic evaluation, which compares existing and suggesting of the technology.
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A Project for the production of the transmission case for the winch
Hrbáček, Emil ; Strejček, Jan (referee) ; Kalivoda, Milan (advisor)
The project elaborated within engineering studies. The project is submitting design of technology production of precise holes for rolling bearings which are located in transmission case for the winch. Variants of production technologies were designed based on the construction drawings of transmission case. Chosen type of technology is boring. Boring was performed on the CNC machine DMF 180 produced by DMG MORI. DMF 180 allows precise production of bearings holes. Via selected criteria, it was selected the better variant of two. The criteria were: cylindricality, cohesiveness, position of elements and surface quality.
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Design of headstock for boring centre
Kovács, Zdeněk ; Marek, Jiří (referee) ; Hermanský, Dominik (advisor)
The aim of this bachelor thesis was to do the design of headstock used in horizontal boring centre. At the beginning was carried out the search of important headstock parts which are found in horizontal boring centres. After that was dealt with automatic tool change. The last part this thesis concern with design of headstock and its realization in 3D.
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Technological possibilities of tool for machining large diameter holes
Hapala, Václav ; Kalivoda, Milan (referee) ; Jaroš, Aleš (advisor)
This bachelor thesis is focused to compare technological possibilities of machines metalworking large diameters in company SV Olšovec and rival companies. There are methods such as technology of drilling, boring and description of tools for drilling large diameters described in practical part. Experimental part includes comparison of a tool from a company SV Olšovec and a tool from rival D’Andrea´s company, cutting inserts used and comparison of technological possibilities particular machines.
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