Wyniki wyszukiwania - BazTech

1

Rodzaj płynu roboczego w obróbce skrawaniem a efekty obróbki

Kowalczyk J., Madej M.

Obróbka Metalu

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2018

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nr 4

41--45

PL

W artykule przedstawiono rezultaty badań dotyczących cech użytkowych nowej biodegradowalnej cieczy chłodzącosmarującej. Jej cechy porównano z cieczą tradycyjną. Porównano także wpływ obydwóch cieczy na topografię obrobionych powierzchni, a uzyskane wyniki porównano z efektami obróbki na sucho. Stwierdzono, że nowa ekologiczna ciecz chłodząco-smarująca spełnia lepiej niż ciecz tradycyjna oczekiwane cechy. Topografia obrobionych powierzchni także pozwala na efektywną realizację funkcji oczekiwanych przez węzeł tribologiczny.

2

Proces kształtowania wiórów w warunkach toczenia na sucho, z MQL i emulsją

Leppert T.

Logistyka

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2015

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nr 4

1968--1975, CD2

PL

Wyeliminowanie chłodzenia i smarowania lub jego zminimalizowanie w procesie toczenia istotnie wpływa na warunki kształtowania i postać tworzącego się wióra. Korzystny kształt wiórów, ze względu na łatwość odprowadzenia z obszaru skrawania, jest pożądany podczas zautomatyzowanego procesu wywarzenia części, szczególnie z materiałów trudnoskrawalnych. W pracy przedstawiono wyniki badań warunków powstawania i kształtu wiórów podczas toczenia na sucho, z minimalnym smarowaniem i emulsją stali konstrukcyjnej C45 oraz austenitycznej stali nierdzewnej X2CrNiMo17-12-2. Stwierdzono istotny wpływ warunków chłodzenia i smarowania strefy skrawania, parametrów skrawania i rodzaju materiału obrabianego. Wyznaczono warunki skrawania, w których kształt powstających wiórów spełnia wymagania obróbki zautomatyzowanej.

EN

The elimination of cooling and lubrication liquid or its minimization in turning process significantly affects the conditions of the chip formation and shape. A preferred shape of chips, for ease of removal from the cutting area is desirable in an automated turning process, particularly in machining difficult to cut materials. The paper presents the research results of the conditions of formation and shape of the chips when turning dry, with minimal lubrication and emulsion C45 structural steel and austenitic stainless steel X2CrNiMo17-12-2. A significant influence of the cooling and lubricating the cutting zone, cutting parameters and the type of work piece material was found. Cutting conditions in which the shapes of generated chips meet the requirements of the automated turning process were determined.

3

Analyses of surface roughness by turning process using Taguchi method

Thamizhmanii S., Saparudin S., Hasan S.

Journal of Achievements in Materials and Manufacturing Engineering

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2007

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Vol. 20, nr 1-2

503-506

EN

Purpose: The purpose of this research paper is focused on the analysis of optimum cutting conditions to get lowest surface roughness in turning SCM 440 alloy steel by Taguchi method. Design/methodology/approach: Experiment was designed using Taguchi method and 18 experiments were designed by this process and experiments conducted. The results are analyzed using analysis of variance (ANOVA) method. Findings: Taguchi method has shown that the depth of cut has significant role to play in producing lower surface roughness followed by feed. The cutting speed has lesser role on surface roughness from the tests. Research limitations/implications: The vibrations of the machine tool, tool chattering are the other factors which may contribute poor surface roughness to the results and such factors ignored for analyses. Originality/value: The results obtained by this method will be useful to other researches for similar type of study and may be eye opening for further research on tool vibrations, cutting forces etc.

4

Chip arrangement in the dry cutting of aluminium alloys

Rubio E. M., Camacho A. M., Sánchez-Sola J. M., Marcos M.

Journal of Achievements in Materials and Manufacturing Engineering

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2006

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Vol. 16, nr 1-2

164--170

EN

Purpose: The aim of the research is make a first analysis of the chip formed in the dry turning process of AA2024 (Al-Cu) and AA7050 (Al-Zn) aluminium alloys. Design/methodology/approach: The methodology has consisted of proving a series of parameters combinations: feed rate, f, cutting speed, v, and depth of cut, d, and of analysing the different types of chip appeared during each one of them. Findings: A single classification, specific for the studied alloys, has been proposed. This classification has been built in a similar way to those recorded in ISO 3685 standards. As a result, it has been able to realise that a direct correspondence with that standards does not exist. Besides, the relationship between chip arrangement and workpiece surface finish has been studied through the comparison between chip form and Ra parameter for different cutting conditions. Research limitations/implications: A possible future work is the development of a general standard, like ISO 3685, for the rest of the aluminium alloys. Practical implications: The relationship found between chip arrangement and workpiece surface finish has an important practical implication since it allows selecting the best cutting condition combination from the points of view both the security and the economy for the established requirements in each case. Originality/value: The paper is original since the bibliographical review has allowed testing that, although works about these themes exist, none approaches the problem like it has been made in this work.