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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
201

Konstrukce jednoúčelového vrtacího stroje / Design of single-purpose drill

Kulhánek, Zdeněk January 2013 (has links)
The aim of this thesis is the design single purpose drilling machine. Single purpose drilling machine will be used for machining cast iron gearbox. In the first part of the work is carried out literature search of drilling machines and single purpose machines, the second part follows a design single purpose drilling machine.
202

Konstrukční návrh jednoúčelového stroje na lisování valivých ložisek do kladkovnic / Design of single-purpose machine for pressing bearings in pulleys

Roupec, Michal January 2013 (has links)
Purpose of this thesis is to make constructional modification of single-purpose pressing machine for Huisman Konstrukce, s.r.o. company. Present machine is non-operational and not enough powerful for present requests of workshop. Intended modifications are to describe present condition of machine, find present requirements and design simple modifications. All modifications are checked by calculations and sketched in shop drawings. There were also made alternative options of modification to show machine more versatile and automatic.
203

Výložník kombinovaného skládkového stroje / Bucket-wheel boom of stacker/reclaimer

Štursa, Martin January 2013 (has links)
This master’s thesis deals with the construction of parts of a bucket-wheel stacker/reclaimer designed to operate lignite stockyard at coal power plant. First the basic parameters of machine and loads applied in service are defined. The work also includes the design of steel structure of bucket-wheel boom, bucket-wheel, buckets, bucket-wheel drive, shaft, bearings and other parts of bucket-wheel boom. These parts are verified by analytical or finite element analysis.
204

Analýza konstrukce a funkce stroje na drážkování hlavní / Barrel Rifling Machine Designe and Function Analysis

Loutocký, Petr January 2013 (has links)
This master’s thesis is devoted to rifling technologies of the barrel bore of fire and gas arms. In cooperation with the company Winston Production, s.r.o. also enters into operation issues of selected manufacturing machine Zs 151 for barrel rifling. It contains an analysis of legislative demands on the technical documentation, description of the construction and function of machinery and materials for the creation of local operating safety rules for its operation. The part of work is also 3D model of the machine created in software SolidWorks.
205

Návrh stroje pro odizolování plochých kabelů / Outisunlating cable one purpose machine

Dolinay, Jiří January 2013 (has links)
The subject of this diploma thesis is especially design of main conception of one purpose machine for outinsulating of flat cables. Designed solution must implement basic requirements of outinsulating‘s quality. Part of this thesis includes also technical-economics evaluation of choosed solution and analysis of risks.
206

Návrh konstrukce omílácího stroje / Suggestion of tumbling machine's construction

Matula, Petr January 2014 (has links)
The master´s thesis deals with a suggestion of vibratory tumbling machine´s construction for tumbling of brass cartridges. The thesis contains theoretical part which describes the principle of tumbling and its possibility of using, further characterizes various types of tumbling machines and their parts. Practical part of thesis includes functional calculations of vibratory tumbling machines, draft of power, compression springs bearing tumbling container and control calculation of these springs. Complete tumbling machine is created in a 3D modeling program. Drawing documentation which includes individual drawings of assemblies, secondary assemblies and their particular parts according to task is enclosed.
207

Výroba krytu / Production of casing

Hájek, Pavel January 2014 (has links)
This master’s project describes a proposal for manufacturing technology of a horizontal boring machine case. This case is manufactured by HESTEGO a.s. from a DC01 steel sheet, which is 2 mm thick and its production series is 200 pieces a year. Punching and bending were chosen as the most suitable methods from the considered manufacturing technologies. The theoretical part of the thesis includes a study of the chosen manufacturing technologies. Based on the analysis of the technological calculations and the available tools in the manufacturing company, a technological procedure was designed and these machines were chosen: punching machine TruPunch 5000 a servo-electronic press brake SAFAN E – BRAKE 100–3100. Technical and economical evaluation is also included in the proposal.
208

Kalibrace skleněných měřítek / Standard Glass Scales Calibration

Jelínek, Vít January 2015 (has links)
This thesis deals with a more work-efficient and time-efficient method of calibration of standard glass scales, with practical use in the Czech Metrology Institute Regional Inspectorate in Brno. The desired streamlining of calibration were achieved in the use of a 3D coordinate measuring machine Micro-Vu Excel 4520. In the service software InSpec, six measuring programs were designed in the use of a standard glass scale brand SIP. The measurement uncertainties of this calibration were presented and calculated. This thesis draws up a draft proposal of the calibration procedure and drafts a formalized document of the calibration.
209

Komplexní analýza modálních vlastností elektrických strojů točivých / Complex Analysis of Modal Properties of Rotating Electrical Machines

Donát, Martin January 2015 (has links)
This dissertation thesis deals with the computational modelling of the dynamic response of the rotating electrical machine structure on the application of the magnetic forces. Apart from the dynamic response of the ideal symmetrical machine, the influence of the air gap eccentricity on the dynamics response is studied in this work. A basic type of the air gap eccentricity, which is caused by eccentric mounting of the rotor pack on the shaft of the rotor, is considered. The calculations the dependence of the magnetic forces on the time and a misalignment of the rotor pack are performed as first. The computational model of the magnetic field of the rotating electrical machine, which is based on solution of the electromagnetic coupled field analysis by finite element method, is used for this purpose. An analysis of the influence of the unbalanced magnetic pull and the stiffness of some parts of the machine on the modal properties of the machine is performed in the second part of this thesis. A third part of this thesis is focused on the calculation of the dynamic response of the machine during the steady state operation of the machine and the influence of the rotor pack misalignment on the dynamic response is studied. The obtained results showed that the tangential components of the magnetic forces, which act on the stator pack, excite significant torsional vibration of the stator. Besides the vibration of the stator of the machine, the influence of the rotor pack misalignment on the sound power of the machine, vibration of the rotor, loads of rotor bearings and air gap eccentricity is studied in this thesis.
210

Vliv ceny pohonných hmot na cenu stavby / The influence of fuel prices to the cost of building

Kaplan, Ondřej January 2016 (has links)
In theoretical part of the thesis I first mentioned a project management structures and the way it compiles the price of the works. I also noted a general procedure for calculating the price of work construction machinery. Conclusion theoretical part I dedicated the composition, development and consumption of fuel prices. The aim of this thesis was to analyze the effect of changes in fuel prices on the cost of the building and generalize this affect the whole construction output. This target has been demonstrated in practical part of this work. I was doing calculations on a particular project.

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