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    Wyświetlanie 1-10 z 10
    Tytuł:
    Method of the environmentally friendly dry single-pass honing with use of the superimposed low frequency oscillations
    Autorzy:
    Rozek, Andre
    Uhlmann, Eckart
    Powiązania:
    https://bibliotekanauki.pl/articles/24084702.pdf
    Data publikacji:
    2023
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    surface finish
    honing
    oscillation
    Opis:
    Single-pass honing is used as a finishing process to meet high demands regarding form and dimensional accuracy of drilled holes. The disadvantages of single-pass honing compared to the conventional long-stroke honing are high process forces and torques as well as an increased risk of chip space clogging of the abrasive stones. Following this, the oscillation-superimposed single-pass honing without cutting fluid has been conducted in this work, which is promising when it comes to the environmentally friendly improvement of machining processes. It was shown that the omitted lubrication and flushing effect of the contact zone between the tool and the workpiece could be compensated with the aid of the superimposed oscillations. The process forces of the dry honing process are up to 37% lower compared to the conventional process, the height of the surface profile Rz decreases by 33% and the form deviations decrease up to 47%. Hence, the new method allows the saving of resources, while improving the work results.
    Źródło:
    Journal of Machine Engineering; 2023, 23, 3; 116--129
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of sequential machining processes in terms of power consumption and surface quality
    Autorzy:
    Chudy, R.
    Grzesik, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/100080.pdf
    Data publikacji:
    2016
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    hard turning
    ball burnishing
    power consumption surface finish
    Opis:
    This paper presents the practical application of a power measurement system based on computer processing of signals generated by current and voltage sensors connected with spindle and axis driving electric motors. By using LabView data acquisition system, the total power and its components were recorded during machining operations. The experimental study concerns the power consumption and surface roughness produced in a sequential machining process consisting of hard turning and ball burnishing operations under variable machining parameters. In particular, some machining routines including finish hard machining and both single and multi-pass ball burnishing of hard surfaces were performed and compared. Finally, the optimization procedure based on these technological criteria was proposed.
    Źródło:
    Journal of Machine Engineering; 2016, 16, 3; 67-74
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality of surface finish on furniture doors of MDF board
    Autorzy:
    Slabejova, Gabriela
    Smidriakowa, Maria
    Vozaf, Ivan
    Powiązania:
    https://bibliotekanauki.pl/articles/2201236.pdf
    Data publikacji:
    2019
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    polyuretane pigmented surface finish
    PVC foil
    acrylic foil
    film hardness
    impact resistance
    resistance against scuffing
    Opis:
    Quality of Surface Finish on Furniture Doors of MDF Board. The paper deals with the assessment of the quality of furniture door surface. The properties were tested on the following types of the surface finish on MDF doors: PVC foil (glossy and matt), acrylic foil, and PUR pigmented coating material. The following physical and mechanical properties of the surfaces were assessed: the film hardness, the impact resistance, and the resistance against scuffing. The polyurethane surface finish and the glossy PVC foil achieved the same film hardness. The impact resistance of the polyurethane finish was significantly lower than the impact resistance of the PVC foils and the acrylic foil. The resistance against scuffing was lower for the polyurethane finish if compared to the foiled surfaces.
    Jakość wykończenia powierzchni drzwi meblowych z płyty MDF. W ramch artykułu zbadano właściwości powierzchni drzwi z płyty MDF o trzech rodzajach wykończenia: folia PVC (błyszcząca i matowa), folia akrylowa i pigmentowany materiał PUR. Określono następujące właściwości fizyczne i mechaniczne powierzchni: twardość folii, odporność na uderzenia i odporność na ścieranie. Powierzchnie wykończone PUR i błyszczącą folią PCV charakteryzowały się zbliżoną twardością. Odporność na uderzenia powierzchni wykończonej poliuretanem była znacznie niższa niż odporność powierzchni wykończonych folią PVC i folią akrylową. Powierzchnia wykończona PUR charakteryzowała się niższą odpornością na ścieranie w porównaniu z pozostałymi badanymi wykończniami.
    Źródło:
    Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2019, 105; 102--106
    1898-5912
    Pojawia się w:
    Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of cutting parameters on surface topography during turning marine pump shafts
    Autorzy:
    Labuda, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/241917.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    finish turning process
    surface topography
    cutting parameters
    stainless steel
    Opis:
    One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process. The technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. Conventional turning machines belong to the basic equipment of ships, because in sea conditions, they enable the execution of a spare part or carrying out the necessary operations in the process of their regeneration. The use of modern cutting tools makes it possible to obtain a surface with low values of surface roughness parameters. The use of new generation cutting inserts on conventional lathes can cause problems for operators. The lack of the ability to ensure proper of treatment condition and setting errors of cutting tools contribute to the damage of the cutting insert or the surface of the workpiece. The article presents the results of influence of different cutting parameters on surface topography during turning process of stainless steel. A shaft made of 304L stainless steel was used for the research. The cutting process was carried out on a universal TUM 25B x 500 centre lathes. During the turning the following machining parameters were used: cutting speed Vc [m/min], feed f [mm/rev] and depth of cut ap [mm].The turning process was conducted by a cutting tool with CCGT 09T302 UM, CCGT 09T304 UM and CCGT 09T308 UM inserts. Measurement of surface topography was carried out by T8000 profilometer.
    Źródło:
    Journal of KONES; 2019, 26, 4; 141-148
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of changing of treatment condition on surface roughness parameter during turning process by wiper insert
    Autorzy:
    Labuda, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/243562.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    finish turning process
    surface roughness parameter
    cutting parameters
    stainless steel
    Opis:
    One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process. The technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part. The article presents the results of influence of change of cutting parameters on surface roughness parameter during turning process of stainless steel. A shaft made of 304L stainless steel was used for the research. The chemical composition of steel was measured by Solaris-ccd plus optical spectrometer. The cutting process was carried out on a universal CDS 6250 BX-1000 centre lathes. Measurement of surface roughness was carried out by T8000 profilometer. The turning process was conducted by a cutting tool with Wiper insert. During the turning, the following machining parameters were used: cutting speed Vc [m/min], feed f [mm/rev], cutting depth ap [mm] and additionally changed nose radius r [mm], and tool cutting edge angle ϰr [º]. The results of measurements of Ra parameter underwent statistic analysis. The calculations were conducted by Statistica software.
    Źródło:
    Journal of KONES; 2019, 26, 1; 81-88
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Profilometria laserowa w badaniach kamiennych elementów budowlanych poddanych obróbce mechanicznej i termicznej
    Application of laser profilometry in the investigation of mechanically and thermally treated stone elements
    Autorzy:
    Rembiś, Marek
    Kośla, Maria
    Powiązania:
    https://bibliotekanauki.pl/articles/2076217.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    profilometria laserowa
    płyty granitowe
    płyty bazaltowe
    wykończenie piłą
    płomieniowane wykończenie
    chropowatość powierzchni
    falistość powierzchni
    laser profilometry
    granite slabs
    basalt slabs
    saw cut finish
    flamed finish
    surface roughness
    surface waviness
    Opis:
    The investigation was carried out on stone slabs sawn and flamed from three commercial types of igneous rocks: the “Sunny Desert” granite, “Twilight” basalt and “Imperial Red” granite. With the following method of laser profilometry, 510 surface profiles were recorded, each of them containing 1280 measuring points. The parameters of roughness and waviness were calculated for each stone surface with a horizontal measurement accuracy of 1 mmandaverticaloneof10mm. The data of laser profiling were correlated with petrographic observations in order to identify the rock components that are most exposed to damage while preparing the stone slabs. The results indicate that the thermally treated slabs have their surface roughness distinctly higher and their waviness higher even several times than the slabs obtained by sawing. Among the three flamed slabs, the highest roughness is revealed by the medium-crystalline “Sunny Desert” granite, while in case of the cut ones - by the unequally crystalline “‘Imperial Red” granite. The waviness of the surfaces obtained by slab cutting and flaming is comparable in both investigated granite types. The “Twilight” basalt, which shows the porphyritic-aphanitic texture and the directional arrangement of its mineral components, reveals the lowest values of all the parameters analysed.
    Źródło:
    Przegląd Geologiczny; 2021, 69, 2; 120--126
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of vibrations on surface roughness formed during precision boring
    Autorzy:
    Korzeniewski, D.
    Znojkiewicz, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/94196.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    vibrations
    surface roughness
    precision boring
    finish cutting
    drgania
    chropowatość powierzchni
    efektywność wiercenia
    trafność wierceń
    wykończenie
    Opis:
    In this paper, the analysis of vibrations on surface roughness generated during boring with the application of the conventional boring tool and one with the damper is presented. The experiments included the measurement of vibration accelerations carried out with the piezoelectric sensor, as well as the evaluation of surface roughness parameters after each machining pass. The obtained results reveal that in the investigated range, no stability loss was found. Furthermore, the growth of the rotational speed induces the increase of vibration level, as well as the growth of the differences between the vibration values generated during boring with the conventional tool and one equipped with damper. Vibrations have also the direct influence on the machined surface roughness. In case of the tool equipped with the damper, the tool’s overhang L had more intense influence than rotational speed n. However, for the conventional boring tool this dependency was unequivocal.
    Źródło:
    Archives of Mechanical Technology and Materials; 2017, 37; 1-5
    2450-9469
    Pojawia się w:
    Archives of Mechanical Technology and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of the Surface Topography of Ti6Al4V Alloy after the Finish Turning Process under Ecological Conditions
    Autorzy:
    Maruda, Radosław W.
    Leksycki, Kamil
    Wojciechowski, Szymon
    Feldshtein, Eugene
    Łukaszewicz, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2201929.pdf
    Data publikacji:
    2023
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    dry machining
    MQL
    MQL method
    finish turning
    surface topography
    Ti6Al4V titanium alloy
    Opis:
    This paper describes findings in the surface topography of Ti6Al4V alloy after finish turning process under dry and MQL (minimum quantity lubrication) machining. The research was fulfilled in the range of variable feeds per revolution of 0.005-0.25 mm/rev and cutting speeds of 40-100 m/min using the depth of cut of 0.25 mm that fits finish processing conditions. The test plan was developed on the way to use the Parameter Space Investigation (PSI) method. The topography features were measured by a Sensofar S Neox optical profilometer using the Imaging Confocal Microscopy technique. Ra parameters and surface roughness profiles as well as 2D images and contour maps were analyzed. Under the studied machining conditions, lower Ra roughness parameters are obtained in the feed rate of 0.005-0.1 mm/rev and cutting speeds of 40-60 m/min. In comparison with dry machining, up to 17% reduction in Ra parameter values was obtained using the MQL method and vc = 70 m/min and f = 0.127 mm/rev as well as vc = 47.5 m/min and f = 0.22 mm/rev. Depending on the machining conditions, peaks and pits as well as feed marks typical for the turning process are observed on the machined surfaces.
    Źródło:
    Advances in Science and Technology. Research Journal; 2023, 17, 2; 63--70
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Obróbka wykończeniowa narzędziami diamentowymi do nagniatania ślizgowego
    Finish machining with the slide burnishing diamond tools
    Autorzy:
    Polowski, W.
    Bednarski, P.
    Toboła, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/395715.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    nagniatanie ślizgowe
    kompozyt diamentowy
    struktura geometryczna powierzchn
    obróbka wykończeniowa
    slide burnishing
    diamond composite
    surface geometrical structure
    finish machining
    Opis:
    Przedstawione zostały możliwości obróbki wykończeniowej – nagniatania ślizgowego nagniatakami diamentowymi wykonanymi przez Instytut Zaawansowanych Technologii Wytwarzania (IZTW) w Krakowie. Zaprezentowano wyniki badań laboratoryjnych nagniatania ślizgowego różnych materiałów konstrukcyjnych o zróżnicowanym składzie chemicznym, różnych właściwościach wytrzymałościowych, plastycznych i fizyko-chemicznych oraz zróżnicowanej strukturze metalograficznej. Wskazano na typowe zalety nagniatania ślizgowego przy użyciu nagniataków diamentowych – uzyskanie znacznej poprawy chropowatości powierzchni stopów aluminium i stali ulepszonych cieplnie do twardości HRC=45÷64 poddanych procesowi nagniatania. Opisano uzyskane wyniki pomiarów parametrów struktury geometrycznej powierzchni (SGP) w układzie 2D (analiza dwuwymiarowa) oraz w układzie 3D (analiza przestrzenna). Wyznaczono współczynnik poprawy chropowatości powierzchni KRa , czyli stosunek chropowatości Ra przed nagniataniem do chropowatości po nagniataniu. Badania SGP wykazały, że narzędzia diamentowe produkcji IZTW do nagniatania ślizgowego pozwalają uzyskiwać wysoką jakość powierzchni właściwą dla obróbki wykończeniowej.
    Possibilities of the finish machining - slide burnishing using the diamond burnishing tools are presented. These tools were made in the Institute of Advanced Manufacturing Technology (IAMT) in Cracow. The results of slide burnishing laboratory tests of various structural materials of different chemical compositions, mechanical, plastic, physicalchemical properties and metallographic structures are presented. Typical advantages of slide burnishing with diamond tools, such as significant improvements in surface roughness of aluminium alloys and quenched and tempered steels (up to hardness of 45÷64 HRC) subjected to burnishing processes, are indicated. The obtained results of measurements of surface geometrical structure parameters (SGP) in 2D system (two-dimensional analysis) and 3D (three-dimensional analysis) system are given and discussed. The coefficient of surface roughness improvement (KRa), which is the ratio of Ra surface roughness parameters prior to and after the burnishing process, was determined. The SGP measurements results shown that the diamond tools made in IAMT for slide burnishing enabled the obtaining of high surface quality, meeting the requirements of finish machining.
    Źródło:
    Postępy Nauki i Techniki; 2011, 6; 40-49
    2080-4075
    Pojawia się w:
    Postępy Nauki i Techniki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of Hard Oxides Reinforcing of Iron-Based MMCs on the Surface Topography Features after Finish Turning
    Autorzy:
    Maruda, Radosław
    Leksycki, Kamil
    Feldshtein, Eugene
    Sąsiadek, Eryk
    Szczotkarz, Natalia
    Odważna, Magdalena
    Ochał, Kamil
    Gradzik, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2201900.pdf
    Data publikacji:
    2023
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    metal matrix composites
    iron-based metal matrix composites
    nanooxide reinforcing
    Simplex Lattice Design
    SLD
    finish turning
    3D surface topography
    Opis:
    Effects of Hard Oxides Reinforcing of Iron-Based MMCs on the Surface Topography Features after Finish Turning
    Źródło:
    Advances in Science and Technology. Research Journal; 2023, 17, 1; 15--22
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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