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    Wyświetlanie 1-6 z 6
    Tytuł:
    Energy-based characterization of precision hard machining using partially worn CBN cutting tools
    Autorzy:
    Grzesik, Wit
    Denkena, Berend
    Zak, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/100133.pdf
    Data publikacji:
    2019
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    hard machining
    CBN tool
    tool wear
    specific energy
    Opis:
    This paper highlights the performance of precision hard turning with CBN cutting tools from energy point-of-view with additional tool wear effect. For this purpose several wear tests were performed during which the tool nose wear VBC and the corresponding changes of component forces Fc, Ff and Fp were continuously measured. Based on the measured forces and geometrical characteristic of the uncut layer, specific cutting and ploughing energy were determined for several combinations of cutting parameters. Consequently, changes of energy consumption resulting from tool wear evolution for variable feed rate, depth of cut and tool nose radius were presented.
    Źródło:
    Journal of Machine Engineering; 2019, 19, 2; 54-62
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the path type on selected technological effects in the trochoidal milling
    Autorzy:
    Waszczuk, K.
    Karolczak, P.
    Wiśniewska, M.
    Kowalski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/103363.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    hard machining
    trochoidal milling
    tool path
    Opis:
    The article presents basic information about machining materials in hardened state – it particularly describes a method of the so called hard milling. The paper discusses strategies and methods in hard milling, presents trochoidal milling, its advantages and disadvantages. It also presents research methodology and effects which concerned determination of a tool path impact on selected technological effects after trochoidal milling of the groove.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 1; 147-153
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the compromise between cutting tool life, productivity and roughness during turning of C45 hardened steel
    Autorzy:
    Abidi, Youcef
    Powiązania:
    https://bibliotekanauki.pl/articles/1839561.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    obróbka twarda
    zużycie narzędzi
    produktywność
    chropowatość powierzchni
    korelacja
    hard machining
    tool wear
    productivity
    surface roughness
    correlation
    Opis:
    Tool wear and surface roughness as performance indexes are considered to be the most important in terms of hardened materials’ machinability. The best combination of cutting parameters which enhances the compromise between tool life, productivity and machined surface quality contribute to benefice on production cost, which makes manufacturing industry interested in it. The aim of this research is to investigate the life of ceramic cutting tool and machining productivity together with surface roughness during turning of hardened steel C45, with focus on the selection of the optimal cutting parameter combination. The experiments are carried out based on uni-factorial planning methodology of cutting speeds and feed rates. The results show that the mixed ceramic tool is suitable for turning hardened steel C45 (40 HRC) and the conclusion is that it performed well in terms of tool life, productivity and surface quality at a combination of cutting speed (200 m/min), feed (0.08 mm/rev) and depth of cut (0.3 mm). Additionally, a tool life model has been proposed which is presented very high coefficient of determination.
    Źródło:
    Production Engineering Archives; 2021, 27, 1; 30-35
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the Trochoidal Tool Path on Quality Surface of Groove Walls
    Autorzy:
    Waszczuk, Kamil
    Skowronek, Hubert
    Karolczak, Paweł
    Kowalski, Maciej
    Kołodziej, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/102883.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    trochoidal milling
    tool path
    slot milling
    hard machining
    frezowanie trochoidalne
    ścieżka narzędzia
    frezowanie rowków
    obróbka twarda
    Opis:
    The article presents the results of machining materials in hardened state. In the paper, different trochoidal tool paths are compared with each other and with the conventional milling. The results of measurements show the relationship between tool path, roughness and waviness of grooves wall. The paper also presents pictures of grooves which were made. These results provide comparative material useful in the choice of the best milling strategy to the cutting process.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 3; 38-42
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relationship between surface roughness and chip morphology when turning hardened steel
    Autorzy:
    Abidi, Youcef
    Powiązania:
    https://bibliotekanauki.pl/articles/1839509.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    hard machining
    AISI 1045 steel
    ceramic tool
    chip
    surface roughness
    obróbka twarda
    stal AISI 1045
    narzędzie ceramiczne
    żeton
    chropowatość powierzchni
    Opis:
    Hard machining is a process which has become highly recommended in manufacturing industry to replace grinding and perform production. The important technological parameters that determine this process are tool wear, machined surface roughness, cutting force and morphology of the removed chip. In this work, an attempt has been made to analyse the morphology and form of chip removed during turning of hardened steel AISI 1045 (40HRC) with mixed ceramic tool type CC650. Using a Taguchi plan L9, whose factors are cutting speed and feed rate with three levels for each. Macroscopic and microscopic results of chip morphology were correlated with these two cutting parameters additional to surface roughness. Sufficient experimental results were obtained using the mixed ceramic tool when turning of hardened steel AISI 1045 (40HRC) at high cutting speeds. Roughness of machined surface confirmed that it is influenced by feed rate. Chips show a sawtooth shape for all combinations of the experimental plan used. The chip form changed with cutting parameters variation and given an important indicator of suraface quality for industriel. Having the indicators on the surface quality from simple control of chip without stopping machining give an important advantage in order to maximize production and reduce costs.
    Źródło:
    Production Engineering Archives; 2020, 26, 3; 92-98
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the Trochoidal Tool Path Generation Method on the Milling Process Efficiency
    Autorzy:
    Waszczuk, Kamil
    Powiązania:
    https://bibliotekanauki.pl/articles/102721.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    trochoidal milling
    hard machining
    slot milling
    tool path
    trochoidal step over
    frezowanie trochoidalne
    obróbka twarda
    frezowanie rowków
    ścieżka narzędzia
    krok trochoidalny
    Opis:
    The article presents a comparison of three trochoidal paths: written by G-Code, generated using the overlays from the machine level, and generated using the CAD/CAM environment. The parameters determining the effectiveness of the process were: maximum achievable feed speed, surface roughness and waviness, cutting forces and cutting temperature when milling NC6 steel (50HRC) using a 10 mm cutter dimeter. The main measurement results include: an increase in the maximum feed speed value by almost 35% when using the A and C paths compared to the type B path and nearly a double increase in surface roughness when using the path generated using the CAD/CAM environment compared to the B path. The most important conclusions was that it is not always possible to machine with the recommended parameters by the tool manufacturer, especially when machining narrow grooves. It was proven that that the use of paths with the displacement described by arcs and straight lines as a trochoidal step over reduces the possibility of milling at high feed rate.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 3; 199-203
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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