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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.
11

Análise de alguns parâmetros tecnológicos da usinagem de aço-carbono por eletroerosão / Analysis of some technological parameters of the machining of carbon-steel by electroerosion

Medeiros, João Telésforo Nóbrega de 18 December 1981 (has links)
Analisaram-se os parâmetros tecnológicos mais significativos que influem na Usinagem por Eletroerosão (UEE). Foram desenvolvidos e comentados ensaios de usinagem de aço-carbono com eletrodos de cobre. Apresenta-se também um método de dimensionamento da ferramenta e da avaliação do tempo de usinagem, baseado nos dados obtidos. Foram confrontados os principais processos não-convencionais de usinagem, constatando-se que a UEE é um eficiente processo de fabricação. / The most important EDM technological parameters have been analyzed. Experiments on carbon-steel workpiece machined with copper tool-electrode have been developed and discussed. Based on the obtained data, this work suggests a method for designing the tool-electrode and evaluating the total machining time. Others usual non-traditional machining processes have been compared and it has been observed that EDM is an efficient manufacturing process.
12

Análise de alguns parâmetros tecnológicos da usinagem de aço-carbono por eletroerosão / Analysis of some technological parameters of the machining of carbon-steel by electroerosion

João Telésforo Nóbrega de Medeiros 18 December 1981 (has links)
Analisaram-se os parâmetros tecnológicos mais significativos que influem na Usinagem por Eletroerosão (UEE). Foram desenvolvidos e comentados ensaios de usinagem de aço-carbono com eletrodos de cobre. Apresenta-se também um método de dimensionamento da ferramenta e da avaliação do tempo de usinagem, baseado nos dados obtidos. Foram confrontados os principais processos não-convencionais de usinagem, constatando-se que a UEE é um eficiente processo de fabricação. / The most important EDM technological parameters have been analyzed. Experiments on carbon-steel workpiece machined with copper tool-electrode have been developed and discussed. Based on the obtained data, this work suggests a method for designing the tool-electrode and evaluating the total machining time. Others usual non-traditional machining processes have been compared and it has been observed that EDM is an efficient manufacturing process.
13

Aspekty ovlivňující trendy v technologii provozu letadlové techniky civilního letectví / Aspects impact trends in the operation technology of civil aviation aircraft

Korytář, Jan January 2021 (has links)
The aim of the work is a general description of the effects on air traffic and aircraft. The first part of the work is devoted to a brief description of the development of individual technical parameters and performance of aircraft from the 1920s to the present with an assessment of the effects. The second part of the work is about the influence of current requirements and the third part is a general view of the future development of construction and technology for more economical and environmentally friendly air transport
14

Aspekty ovlivňující trendy v technologii provozu letadlové techniky civilního letectví / Aspects impact trends in the operation technology of civil aviation aircraft

Korytář, Jan January 2021 (has links)
The aim of the work is a general description of the effects on air traffic and aircraft. The first part of the work is devoted to a brief description of the development of individual technical parameters and performance of aircraft from the 1920s to the present with an assessment of the effects. The second part of the work is about the influence of current requirements and the third part is a general view of the future development of construction and technology for more economical and environmentally friendly air transport
15

Kontinuální odvalovací broušení čelního ozubení / Continuos generating spur gear grinding

Jermolajev, Štěpán January 2013 (has links)
The diploma thesis deals with the technology of continuous generating gear grinding. With reference to this technology, used grinding wheels and grinding machines are described. A detailed analysis is devoted to the technological parameters of the grinding process and their influence on the resultant tooth flank surface integrity. In order to verify described rules, the diploma thesis contains results of practical experiments as well.

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