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    Wyświetlanie 1-8 z 8
    Tytuł:
    Increasing durability of cutting tools
    Autorzy:
    Majerníková, J.
    Spišák, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/101918.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    coating
    cutting tool
    durability
    Opis:
    The article evaluates durability of punches and cutting tools when cutting of the cut-outs. Durability of punches made of the same material without coating, with the TiCN-MP coating and with the TiN coating is compared. Durability is evaluated by the tolerance of the cut-outs. Border durability, which requires grinding of the tool, is a determined durability, at which the deviation of the tolerance of a cut-out is at the lowest border. By comparing the dependency of change of the holes’ dimensions on the number of strokes in the case of all three types of punches, it can be stated that the durability increased by 10–12 times in the case of the tools with coatings.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 4; 141-146
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the cutting tool geometry on the tool wear resistance when machining Inconel 625
    Autorzy:
    Zlámal, T.
    Hajnyš, J.
    Petrů, J.
    Mrkvica, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/103138.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    wear resistance
    Inconel 625
    cutting tool geometry
    entering angle
    Opis:
    The paper deals with the design of a suitable cutting geometry of a tool for the machining of the Inconel 625 nickel alloy. This alloy is among the hard-to-machine refractory alloys that cause very rapid wear on cutting tools. Therefore, SNMG and RCMT indexable cutting insert were used to machine the alloy. The selected insert geometry should prevent notch wear and extend tool life. The alloy was machined under predetermined cutting conditions. The angle of the main edge and thus the size and nature of the wear changed with the depth of the material layer being cut. The criterion for determining a more suitable cutting geometry was the tool’s durability and the roughness of the machined surface.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 4; 286-293
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on the Impact of Cutting Tool Wear on Machine Tool Energy Consumption
    Autorzy:
    Roszkowski, Andrzej
    Piórkowski, Paweł
    Skoczyński, Wacław
    Borkowski, Wojciech
    Jankowski, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/102031.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    energy consumption
    cutting tool wear
    zużycie energii
    zużycie narzędzia skrawającego
    Opis:
    The paper describes the problem of tool wear in machining processes. The importance of determining and analysing the demand of machining centres for electricity was emphasised and the potential relationship between tool wear and machine energy consumption was indicated. The paper presents the results of the measurements of cutting tool wear on the energy consumption of a machining centre based on the analysis of an actual technological process. The paper presents a method of obtaining and processing large amounts of data. The changes in the form of power consumption by the machine tool depending on the tool operation time and the machining cycle being implemented were shown. The researchers proposed the possibility of using the recorded data to develop an algorithm for automatic diagnosis of catastrophic tool wear. The usefulness of the collected and analysed data in the context of developing a method for determining the machine electricity demand was indicated.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 3; 158-164
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the cutting tool geometry on the tool wear resistance when machining Inconel 625
    Autorzy:
    Zlámal, Tomáš
    Hajnyš, Jiří
    Petrů, Jana
    Mrkvica, Ivan
    Powiązania:
    https://bibliotekanauki.pl/articles/102468.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    wear resistance
    Inconel 625
    cutting tool geometry
    entering angle
    odporność na zużycie
    geometria narzędzia tnącego
    kąt wejścia
    Opis:
    The paper deals with the design of a suitable cutting geometry of a tool for the machining of the Inconel 625 nickel alloy. This alloy is among the hard-to-machine refractory alloys that cause very rapid wear on cutting tools. Therefore, SNMG and RCMT indexable cutting insert were used to machine the alloy. The selected insert geometry should prevent notch wear and extend tool life. The alloy was machined under predetermined cutting conditions. The angle of the main edge and thus the size and nature of the wear changed with the depth of the material layer being cut. The criterion for determining a more suitable cutting geometry was the tool’s durability and the roughness of the machined surface.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 1; 236-243
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Grindability of selected grades of low-alloy high-speed steel
    Autorzy:
    Jaworski, J.
    Kluz, R.
    Trzepieciński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/957978.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    austenitization
    cutting ability
    high-speed steel
    tool wear
    Opis:
    In this paper, we presents the results of investigations studied the cutting ability and grindability of selected high-speed steels. We analysed the effect of the austenitization temperature on the grain size, the amount of retained austenite and percentage of retained austenite in HS3-1-1 steel. Furthermore, the investigations concerned on the efficiency of the keyway broaches during the whole period of operation were carried out. It was found that the value of average roughness parameter increases together with increases in the grinding depth. The investigations also show the influence of tempering conditions on the volume of carbide phases in HS3-1-1 steel.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 31; 222-228
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Testing of Air-Cooling Efficiency of the Underside of a Turning Tool Carbide Insert in EN-GJL 250 Cast Iron Turning Operations
    Autorzy:
    Bartoszuk, Marian
    Prażmowski, Mariusz
    Hurey, Igor
    Powiązania:
    https://bibliotekanauki.pl/articles/2201829.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    cast-iron machining
    air cooling systems
    cutting temperature
    surface roughness
    tool wear
    Opis:
    This article shows the results of research on the effectiveness of operation of an original tool air cooling system in cutting. A case of turning EN-GJL 250 cast iron with TH10 tungsten carbide cutting inserts without protective coatings was selected for testing. The paper gives constructional details of the tested tool cooling system and discusses the principle of its operation. The research carried out has shown that this way of cooling the cutting insert causes a significant decrease in temperature in all sub-areas of the cutting zone. In addition, air cooling has been proven to significantly reduce cutting tool wear and slightly improve the roughness of the machined surface. The results obtained showed that the proposed method of cooling can be successfully used in the treatment of grey cast iron. In the future, it may serve as a basis for the construction of a professional cooling system for industrial applications.
    Źródło:
    Advances in Science and Technology. Research Journal; 2022, 16, 4; 1--9
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cutting Mechanics when Turning Powder Metallurgy Produced Nickel-Cobalt Base Alloy with a Cubic Boron Nitride Insert
    Autorzy:
    Daź, Waldemar
    Habrat, Witold
    Tymczyszyn, Jarosław
    Krupa, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2201808.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    tool wear
    cutting forces
    surface roughness
    nickel-cobalt alloys
    residual stress
    cubic Boron Nitride
    cubic Boron Nitride tool
    Opis:
    For the critical aero-engine parts it’s important to understand influence of cutting tools, cutting parameters, tool ware etc. on near surface condition which highly affect fatigue strength and at the same part life-time. New material implemented for the latest designs of aero-engines parts generate challenges for machining processes to fulfil strict requirements of aviation standards. Finish machining is the most important stage of process influencing fatigue strength. cBN tool are often used for final stage of machining. The objective of this study was analysis of cutting mechanics during finish turning of modern nickel-cobalt based alloy with cBN insert. Observations of cutting tool wear and cutting parameters influence on the components of cutting force, surface roughness and residual stress are presented in this paper.
    Źródło:
    Advances in Science and Technology. Research Journal; 2022, 16, 4; 163--175
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temperature Measurement of Modern Cutting Tools During Turning
    Autorzy:
    Grochalski, Karol
    Jabłoński, Piotr
    Talar, Rafał
    Twardowski, Paweł
    Wieczorowski, Michał
    Jakubek, Bartosz
    Rukat, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/103258.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    cutting tools
    tool wear
    cutting temperature
    temperature measurement
    thermographic techniques
    narzędzia tnące
    zużycie narzędzi
    temperatura cięcia
    pomiar temperatury
    technika termograficzna
    Opis:
    The study presents the influence of the anti-wear coatings and the type of material from which the cutting tools are made of on the cutting temperature occurring on the tool. The cutting tools made of boron nitride and tungsten carbide composite were investigated. The methodology of measuring the cutting temperature using the thermoelement and thermovision techniques was presented. The results of the temperature measurements occurring on the cutting tool in the cutting zone were compared. The paper also presents a method of determining the effective emissivity of the tested tools, necessary for the correct temperature measurement using the non-contact method. The obtained data were interpreted and the relationships described, and then the results obtained were discussed.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 4; 37-48
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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