• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 259
  • 257
  • 226
  • 76
  • 37
  • 13
  • 10
  • 8
  • 8
  • 8
  • 8
  • 8
  • 7
  • 4
  • 4
  • Tagged with
  • 1075
  • 248
  • 173
  • 167
  • 149
  • 129
  • 128
  • 108
  • 107
  • 103
  • 98
  • 86
  • 85
  • 82
  • 81
  • 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.
611

Konstrukčně-výrobní řešení upínacího přípravku / Construction and Manufacture of a Clamping Device

Okáč, Petr January 2014 (has links)
The thesis deals with various aspects of the structure - manufacturing solutions fixture in terms of small manufacturing firm. In the thesis are discussed problems which the author of the thesis with small-scale production meets. A substantial part of the thesis is also made by comparation of the production of small series production and large series. Emphasis is placed on efficiency and economy of the entire production process.
612

Obrábění žáruvzdorných keramických materiálů frézováním / On the milling of refractory ceramic materials

Reiter, Milan January 2014 (has links)
Diploma thesis is focused on machining of refractory ceramics materials. The theoretical part describes the division of ceramics materials, their structure, manufacture and properties. This part also contains the division of refractory ceramics. In the second chapter, of ceramics materials are described machining. The latest chapter is focused on analyzing the machinability of ceramics materials R - SLI - K. During the experiment, cutting conditions were changed and cutting forces were checked. Then surface roughness was measured and tool wear was observed.
613

Moderní dokončovací metody obrábění vnějších povrchů / Modern cutting finishing methods of outer surfaces

Laňka, Lubomír January 2014 (has links)
This master`s thesis is focused on modern cutting finishing methods of outer surfaces. In the first part the cutting finishing technologies of outer surfaces are analysed, which is followed by a description of modern finishing methods from the fine machining up-to the nano-machining. The experimental part includes the analysis of surface roughness during front turning of a dural disc and the study of magnitudes of forces during its longitudinal turning. The thesis contains technological-economic evaluation of the achieved results.
614

Měření povrchových teplot ve strojírenství / Measurement of surface temperatures in mechanical engineering

Stránský, Marek January 2014 (has links)
This work deals with contact and non-contact methods of surface temperature measurement. The work contains a list and formulations of basic terms and laws of thermodynamics. Furthermore, the work deals with the description and comparison of the properties and use of certain devices for contact and non-contact surface temperature measurement. The experimental part is focused on dependence of the turning speed on the turning knife thermal stress. Subsurface thermocouples, surface thermocouples and thermovision were used for the temperature detection. The subsurface temperatures were afterwards used (as data inputs) for the inverse calculation of surface temperatures. All results obtained were then compared to each other.
615

Návrh na zefektivnění procesu obrábění dílu pro vstřikovací formu / Increasing the Efficiency of the Process of Machining Injection Molds Components

Hruška, Lukáš January 2014 (has links)
The aim of this diploma work was a proposal to make the process of machining of injection mould more efficient. The work described the initial state of machining of a moulding injection part from the technological point of splinter machining, including the description of each production areas, the tool used in the process and the machines. The main part of the diploma work was focused on consideration of a possible way leading to the increase in the efficiency of the production process of machining of an injection mould part that included the transfer of the initial way of machining of a moulding injection part to CNC lathe Gildemeister CTX beta 500. Furthermore the work described the tool that had been used including the description of proposed control programs for machining of an injection mould part. The essential part of the work was a techno-economical assessment of the proposed variant of solution, which included analysis of the production costs and the time indexes that were achieved during the production.
616

Obrábění pomocí robotů / Robotic machining

Voráček, Martin January 2015 (has links)
Diploma thesis presents a study focused at the current level of industrial robotsand ther applications in the machining process. It presents current technology used in the selected company to produce components for the automotive industry. Based on analysis of the finished products presents the possible ways of alternating the current technology to ensure the required quality of production. This thesis also includes a financial assessment of current technology.
617

Racionalizace výroby skříní / Rationalization of production casing

Konečný, Jan January 2015 (has links)
The thesis deals with the reorganization of production injection pump casing, when the existing production solution, using cutting lines, did not meet the requirements for flexible manufacturing. There are handled points leading to the replacement of the line of machining centres after a brief introduction of the company. Among the main points of thesis are the design of operations, choice of tools and cutting conditions, proposal clamping device and technology, techno-economic evaluation of the newly introduced production.
618

Kamerový systém při drátové elektroerozi / Camera system with wire EDM

Gvizd, Michal January 2015 (has links)
The thesis discusses an unconventional technology of wire-cut electro discharge machining. In the beginning there is a description of the basic principle, the fundamentals of electro discharge machining and its technological application. Further chapters characterise the wire-cut electro discharge machining, the wire electrodes used, the main parts of the machine, the cutting conditions and the advantages of this technology. The practical part is focused on the possibilities of the camera system during the production on a wire cutting machine and the comparison of nowaday´s machines in the manufacture of precise cutting tools in the middle-sized tool-room.
619

Obrábění rotačních součástí z kalených ocelí se zaměřením na stav povrchu / Machining of rotating parts of hardened steel focusing on the surface condition

Bukovský, Petr January 2015 (has links)
The thesis deals with machining of rotating parts made from hardened steel. The introductory chapter describes the problems of turning and grinding. The next chapter deals with heat treatment and machined materials. The next lists the used cutting materials. Criteria for evaluating the quality of the surface. A selection of cutting materials for the machining of hardened steels from selected manufacturers. The final chapter is a comparison of the described technologies.
620

Zkoušky řezivosti vyměnitelných břitových destiček pro obrábění kolejových součástí / Testing of cutting performance of indxable inserts for machining of railway components

Szczygiel, Pavel January 2016 (has links)
This thesis deals with the wear of indexable insert during machining railway axles in BONATRAS GROUP Inc. Thesis describes the technological process of this company and basic types of wear inserts. It also assesses the development of tool wear when cutting speed is increase by 10% and also to compare the wear inserts from different suppliers for that company. This work mainly deals with development of ridge wear of the cutting tool depending on the pressure of coolant.

Page generated in 0.0759 seconds