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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.
1

Micro-mechanisms of ductile fracture

Druiff, Helen January 1990 (has links)
No description available.
2

Výroba plechu držáku projektoru / Production of a part of the data projector bracket

Starý, Petr January 2020 (has links)
The diploma thesis presents technology production design of a data projector bracket made of 2 mm thickness 11 321 steel plate. Considering the large production quantity and maximum tolerable deviations, a progressive die tool along with cutting and bending was chosen as the optimal solution for this type of production, based on a variant solution. Technological aspects were assessed, the production process was established, and technological and control calculations were performed. According to the total forming force of 2 000 kN, the LDC 250 mechanical press with a nominal force of 2 500 kN, manufactured in Šmeral Brno a.s., was chosen to meet the production requirements. The chosen material in a form of metal sheet coils will be supplied to the machine by a feeding device. The article will be manufactured in six steps. Based on technical-economic evaluation, the final price of a single piece in a series of 250 000 pieces per year was set at 30,80 Kč.
3

Inovace výroby CNC obrábění diskovitých součástí / An innovation of the CNC production of the disc-shaped parts

Křupka, Marek January 2013 (has links)
The optimal choice of cutting conditions, as well cutting tool, has a significant effect on the quality of machined part and is an essential parameter to reduce the cost of production. This thesis describes CNC turning process of disc springs made of 51CrV4 material, especially using new cutting tools and the use of higher cutting speeds. A comparison of four manufacturers of cutting tools in terms of surface quality, tool path and the machined material volume will be introduced. It was experimentally verified that our proposed facility has achieved the best result.
4

Výroba spony bezpečnostního pásu / The manufacture of seat belt buckle

Oborný, Roman January 2008 (has links)
Aim of this Thesis is to assess the existing manufacturing method and to propose and make out an optimum manufacturing method for the part „seat belt buckle“. Components made of the steel plate 14 220.3. With respect to requested accuracy, quality and expected production run of 1 000 000 pcs per year, the Thesis includes the proposal of manufacture of the part by a method of accurate cutting with push-on edge. Is designed the cutting tool and selected the suitable machine type for this technology Feintool HFA 3200 Plus. The work contains necessary calculations, economical evaluation and design documentation of the processual tools for the components production. The last part contains the technical and economic evaluation, from which results that, technically and economically, the new production technology is preferable to the existing technology.

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