Факултет за производњу и менаџмент [Научни радови] / Faculty of Production and Management Trebinje [Scientific papers]

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https://repozitorijum.ues.rs.ba/handle/123456789/49

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Прегледај Факултет за производњу и менаџмент [Научни радови] / Faculty of Production and Management Trebinje [Scientific papers] по Аутор "Spaić, Obrad"

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    APPLICATION VALIDITY OF THE TECHNOLOGICAL PROCEDURE FOR MAKING SPIRAL DRILL-BIT GROOVES
    (Institute for metallic materials and technology, 2021) Spaić, Obrad; Vukčević, Milan; Marinović, Budimirka; Koprivica, Aleksandra; Jovanović, Janko
    The current world trends and the global market require production organizations to increase the quality while reducing the costs of their products. In most cases, traditional production technologies of spiral drill bits (SD) cannot meet these expectations, as they most often fulfil only one of the set requirements. Thus, the cost of a SD produced with the rolling technology is low, but its quality is also much lower than that of the drills produced with the grinding technology whose cost is also much higher. The grooves of the SDs produced with our new technological method have advantages over the grooves produced with the rolling technology or grinding technology, and the savings in the material and grinding wheel are higher compared to the SDs produced with the grinding technology. This paper presents an analysis of the application of this new technological process for producing SD grooves
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    DESIGN OF THE NEW TECHNOLOGICAL PROCEDURE OF PRODUCING GROOVE OF SPIRAL BITS
    (Center for Quality, Faculty of Engineering, University of Kragujevac, Serbia,, 2020) Spaić, Obrad; Krivokapić, Zdravko; Marinović, Budimirka; Jovanović, Janko
    One of the most commonly used and at the same time the most complicated cutting tools in terms of body geometry is the spiral drill bit. In the process of their production, the key operation is the production of spiral grooves. Until now, the grooves on the drill bits have been mainly produced by milling, grinding, rolling and extrusion processes. All these procedures have their advantages and disadvantages as well. Based on the experimental measurements of the dimensions of the grooves of the drill bits produced by the rolling and grinding technology, the paper defines the basic parameters and a new technological procedure for the production of grooves of the drill bits has been designed. For the suggested technological procedure of making of grooves of the drill bits, the advantages and disadvantages of the conventional production of the grooves of the drill bits by rolling or grinding technology have been analysed.