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    Wyświetlanie 1-8 z 8
    Tytuł:
    The wear-resistant evaluation of dental milling cutters based on cemented carbides
    Autorzy:
    Klimecka-Tatar, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/114966.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    milling cutter
    milling tool
    cemented carbide
    frez
    frezarka
    węglik spiekany
    Opis:
    This work presents the evaluation of wear resistance of milling cutters. The subjects of this chapter were the milling tools commonly used in dental laboratory. Based on the results it was found, that the milling cutter during the cutting operation can easily become the destruction, resulting in the mass loss and in the first 10 hours of milling cutters work with high efficiency. It is suggested that after 10 hours of milling work, in order to ensure high standards of materials processing, milling cutters should be replaced by new one.
    Źródło:
    Zeszyty Naukowe. Quality. Production. Improvement; 2014, 1 (1); 99-110
    2544-2813
    Pojawia się w:
    Zeszyty Naukowe. Quality. Production. Improvement
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    LEAN manufacturing process planning for 5 AXES CNC driven milling machine
    Autorzy:
    Bodzás, S.
    Krakkó, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/101848.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Lubelska. Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    OEE value
    production planning
    LEAN
    milling machine
    wartość OEE
    planowanie produkcji
    frezarka
    Opis:
    The aim of this publication is to determine the OEE (Overall Equipment Efficiency) indicator for 5 axes milling machine found at Diehl Aircabin Hungary Ltd. for the present and future state. Based on this value, the utilization of the machine for the given production amount can be calculated. With the optimal choice of the right production parameters (the number of cuts, feeding, depth of cut, etc.) greater productivity can be achieved i.e. the machine main time (time of cutting) will be less. The possibilities of the reduction of the machine time will be analysed and calculated. Setting of the appropriate technological parameters the machine main time could be decreased. The calculation of the machine main time will be determined for the most frequent manufacturing technologies.
    Źródło:
    Journal of Technology and Exploitation in Mechanical Engineering; 2018, 4, 1; 10-28
    2451-148X
    Pojawia się w:
    Journal of Technology and Exploitation in Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Friction Machining on Low Carbon Steel with Titanium Traces in terms of Surface Hardening
    Autorzy:
    Sheikh, Ali R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2203931.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    milling machine
    high speed steel
    mild steel
    face milling
    thermomechanical treatment
    frezarka
    stal szybkotnąca
    stal miękka
    frezowanie czołowe
    obróbka termomechaniczna
    Opis:
    This work is an experimental study of thermo-mechanical surface hardening of mild steel with trace elements like titanium in negligible concentrations. This is somewhat an advanced technique used to harden steel surface which can be hardened in many typical ways. The concept is combining the thermal as well as mechanical technique to attain better results. It is quite obvious that mechanical refers to the compressive loading during machining and thermal refers to producing heat on the surface of work piece. The ideal conditions are when the heat produced is enough to achieve austenite and then subsequent quick cooling helps in the formation of marten site, which is metallurgically the most highly strong phase of steel, in terms of hardness. The coolant used preferably is the emulsified oil which flows on the surface during machining with variable rate of flow as the optimum effect is. This process hardens the surface of steel and increases its resistance against wear and abrasion. Preference is to achieve surface hardening using the conventional equipment so that operational cost is kept low and better results are attained. This technique has been quite successful in the laboratory. It can be termed as friction hardening. Some improvements in the process scheme and working environment can be made to get better results.
    Źródło:
    Archives of Foundry Engineering; 2022, 22, 4; 41--46
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of the Dynamic Characteristics and Machining Stability of a Bi-rotary Milling Tool
    Autorzy:
    Hung, Jui-Pin
    Lin, Wei-Zhu
    Powiązania:
    https://bibliotekanauki.pl/articles/103262.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    bi-rotary milling head
    dynamic characteristics
    five axis milling machine
    machining stability
    głowica frezarska dwuobrotowa
    właściwości dynamiczne
    frezarka pięcioosiowa
    stabilność obróbki
    Opis:
    Bi-rotary milling head is the primary component of multiple-axis machine tool toward the multiply machining operation. The machining performance is greatly related to the structure characteristics and positioning precisions of the swivel head. This study was aimed at developing a bi-rotary milling head module, which is composed of a direct drive motor, cross roller bearings and motorized spindle unit. In order to evaluate the machining stability at the design phase, the dynamic characteristics of the rotary milling were first analyzed with finite element method. Especially, the variations of the dynamic characteristics of the spindle tool with the changing of the titling configuration of swivel axis were examined. In order to consider the accurate presentation of a spindle tool system and swivel mechanism, the bearings in the rolling components were also included in the finite element model and simulated with surface contact elements with adequate contact stiffness. The dynamic frequency response function of the spindle tool at different swinging positions were predicted for comparisons, which were further used to calculate the machining stability based on the machining mechanics. The current results show that the feeding direction and swinging positions of rotary milling head have a significant influence on the dynamic characteristics and machining ability of the spindle tool. The variations of the cutting depth with the swinging of A axis fall in the range of 11% to 40%, depending on the feeding direction and swinging angle. The analysis results are expected to clearly demonstrate the variation of the machining performance of the spindle tool under different milling configurations. The devised model and modeling approach can be applied to develop a five axis milling machine with desired dynamic and machining performance.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 1; 14-22
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A milling machine used for groove making in a tubing inter-rib niche
    Autorzy:
    Cichoń, Tomasz
    Pyrek, Krzysztof
    Ratuszny, Krystian
    Kalinowski, Piotr
    Kamiński, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/1819281.pdf
    Data publikacji:
    2019
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    tubing milling machine
    shaft lining repairs
    tubing lining
    frezarka do tubingów
    naprawa obudowy szybu
    obudowa tubingowa
    Opis:
    The sealing of shaft cast iron tubing within a tubing Inter-rib niche is often needed during overhauls and repairs of a shaft lining. Leakages or scratches and fractures can occur within the area of individual tubing of the shaft lining. The Przedsiębiorstwo Budowy Szybów S.A. developed special method for the sealing in question. Around the sealed area, a closed circumference groove of a depth smaller than the tubing thickness is made in the inner shaft lining. The sealing element is placed in this groove and then tightened with a spatial insert, with a hole for the injection of the sealing medium. A specially designed milling machine is used for groove making in the tubing lining of the mine shaft. The milling machine is composed of: power transmission system, special construction for mounting the milling machine to tubing and advance mechanism. The milling machine is driven by a battery drill-driver, and the whole device is mounted to the tubing with the use of specially designed guides with handles.
    Źródło:
    Mining – Informatics, Automation and Electrical Engineering; 2019, 57, 3; 27--36
    2450-7326
    2449-6421
    Pojawia się w:
    Mining – Informatics, Automation and Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Increasing the resource of milling cutters used to process the locomotive wheelsets. Part 1: determination of cutting forces
    Autorzy:
    Sładkowski, A.
    Proydak, Y.
    Ruban, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/374861.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    cylindrical cutting tools
    milling cutter
    wheel working surface
    locomotive wheelsets
    wheel-milling machines
    cylindryczne narzędzie skrawające
    frez
    powierzchnia robocza koła
    zestaw kół lokomotywy
    frezarka kołowa
    Opis:
    The purpose of this work is to increase the service life of milling cutters for wheel-milling machines KJ20, and to improve the processing quality of the working surface of wheelsets of railway vehicles. Questions of operation of cylindrical cutting tools are considered, force characteristics are determined, and also analyzed their stressed
    Źródło:
    Transport Problems; 2018, 13, 3; 119-130
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Increasing the resource of milling cutters used to process the locomotive wheelsets. Part 2: Study of stressed-deformed state
    Autorzy:
    Sładkowski, Aleksander
    Proydak, Yuriy
    Ruban, Vladislav
    Powiązania:
    https://bibliotekanauki.pl/articles/1841204.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    locomotive wheelsets
    milling machine
    finite element analysis
    cylindrical cutting tools
    milling cutter
    zestaw kołowy lokomotywy
    frezarka
    analiza elementów skończonych
    cylindryczne narzędzie skrawające
    frez
    Opis:
    The article deals with the stress-strain state of the cutters used in the mills of a new design for the restoration of the working surfaces of locomotive wheels. A comparative analysis of stresses in the cutters was carried out using the finite element method, which showed a significant advantage of the new technical solution, the novelty of which is confirmed by the patent.
    Źródło:
    Transport Problems; 2020, 15, 3; 139-151
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Technological setups of the Gleason Phoenix CNC spiral bevel and hypoid gear milling machines
    Nastawy technologiczne frezarek Gleason Phoenix CNC do obróbki kół stożkowych i hipoidalnych o kołowo-łukowej linii zęba
    Autorzy:
    Skawiński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/175695.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    koło zębate stożkowe
    obrabiarka CNC
    frezarka CNC
    ustawienia obrabiarki
    spiral bevel gear
    CNC machine tool
    CNC milling machine
    machine tool setup
    Opis:
    The paper contains the description of basic technological setups for conventional milling machines and for 6-axes CNC machines for Gleason spiral bevel and hypoid gears. Cartesian reference system are discussed for Gleason's series Phoenix CNC machines. Numerically controlled machines allow cut and grind the generated and formate spiral and hypoid bevel gears in all technological methods.
    W opracowaniu przedstawiono podstawowe nastawy technologiczne frezarek konwencjonalnych oraz 6-osiowych obrabiarek CNC stosowanych do obróbki kół zębatych stożkowych i hipoidalnych kołowo-łukowych według metody Gleasona. Podstawą opracowania nastaw jest kinematyka obrabiarek CNC firmy Gleason serii Phoenix. Wykazano, że obrabiarki sterowane numerycznie pozwalają na skrawanie i szlifowanie generowanych numerycznie i kształtowanych kół stożkowych i hipoidalnych o kołowo-łukowej linii zęba przy użyciu wszystkich metod technologicznych obróbki.
    Źródło:
    Advances in Manufacturing Science and Technology; 2012, 36, 4; 33-43
    0137-4478
    Pojawia się w:
    Advances in Manufacturing Science and Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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