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    Wyświetlanie 1-11 z 11
    Tytuł:
    Dimensional accuracy of parts manufactured by 3d printing for interaction in virtual reality
    Autorzy:
    Górski, F.
    Wichniarek, R.
    Kuczko, W.
    Zawadzki, P.
    Buń, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/957957.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    3D Printing
    dimensional accuracy
    Virtual Reality
    ultrasound head
    Opis:
    Realism of a Virtual Reality simulation can be improved by use of physical objects tracked in real time. The paper presents possibility of using low-cost FDM process, realized by MakerBot Replicator 2X machine, in comparison with a professional one to build tooling for a simulation of ultrasound examination procedure. The objects were manufactured on two different machines out of ABS material, 3D scanned for accuracy testing and finally possibilities of their use in a VR system were evaluated.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 4; 279-285
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of increased temperature on dimensional and shape accuracy of castings produced from the EN AC-AlSi11 alloy by pressure die casting process
    Autorzy:
    Jarco, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/353899.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    high pressure die casting
    Al-Si alloy
    blistering
    dimensional accuracy
    shape accuracy
    elevated temperature behavior
    Opis:
    The present work discusses results of increased temperature on shape-dimensional changes of a 110 type hose coupling, produced from EN AC-AlSi11 alloy with the use of pressure die casting technology. The castings were soaked for 3.5 h at temperatures 460°C, 475°C and 490°C. The verification of shape-dimensional accuracy of the elements after soaking treatment, in relation to raw casting, was carried out by comparing the 3D models received from 3D scanning. Soaking temperature of about 460°C-475°C results in no significant changes in the shapes and dimensions of the castings, or surface defects in the form of blisters, which can be seen at a temperature of 490°C.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 1; 325-328
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dimensional-Shape Verification of a Selected Part of Machines Manufactured by Additive Techniques
    Autorzy:
    Bernaczek, Jacek
    Budzik, Grzegorz
    Dziubek, Tomasz
    Przeszłowski, Łukasz
    Wójciak, Kinga
    Powiązania:
    https://bibliotekanauki.pl/articles/2201895.pdf
    Data publikacji:
    2023
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    dimensional accuracy
    shape accuracy
    coordinate measurements
    3D scanning
    additive manufacturing
    FFF technology
    PolyJet technology
    Opis:
    The publication covers the complex process of analyzing the accuracy of mapping models produced in AM (Additive Manufacturing) processes with a thermoplastic material – FFF (Fused Filament Fabrication) and polymerization of light-curing resin – PolyJet. The research was conducted with the use of an advanced optical measuring system – the GOM Atos 3D scanner. The part selected for the research in question was the water pump body as a representative example of an element with adequate dimensional and shape conditions (high degree of folding and geometric differentiation) allowing, based on the results of coordinate measurements determined in the research process, to define the potential area of application of AM models made of thermoplastic material and resin hardened with UV light. The performed tests showed the accuracy of individual AM methods at a level within the range declared by machine manufacturers. However, the PolyJet body is characterized by a much higher accuracy of the shape mapping compared to the FFF body. The dimensional accuracy is also higher for the resin model in relation to the thermoplastic model, which results primarily from the thickness of the elementary layer of the model material applied by the printing module defined for individual incremental processes – 16 μm for RGD 720 and 0.2 mm for ABS. Detailed elaboration and analysis of the research results are presented in this publication.
    Źródło:
    Advances in Science and Technology. Research Journal; 2023, 17, 1; 46--57
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Increase in efficiency of electric powered diamond grinding of conductive material by regulating longitudinal profile of grinding wheels
    Povyshenie ehffectivnosti processa ehlektroalmaznogo shlifovanija tokoprovodjashhikh materialov putem regulirovanija prodolnogo profilja krugov
    Autorzy:
    Dobroskok, V.
    Shpilka, A.
    Morneva, M.
    Shpilka, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/793717.pdf
    Data publikacji:
    2014
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    electric powered diamond grinding
    working surface
    wheel
    vibration
    grinding
    dimensional accuracy
    electrical discharge
    Źródło:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 2
    1641-7739
    Pojawia się w:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the type of inserts on dimensional accuracy in turning process
    Wpływ typu narzędzia na dokładność wymiarową procesu toczenia
    Autorzy:
    Polák, P.
    Žitňanský, J.
    Adamik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/410166.pdf
    Data publikacji:
    2015
    Wydawca:
    STE GROUP
    Tematy:
    turning
    dimensional accuracy
    cutting edge
    chip breaker
    toczenie
    dokładność wymiarowa
    krawędź tnąca
    nóż tokarski
    Opis:
    This article is aimed to demonstrate the effect of cutting material and geometry of inserts chip breaker for dimensional accuracy in turning. The experiment is aimed on measuring compliance with dimensional accuracy in turning of samples from steel 11 523 at a constant feed rate and depth of cut, with varying spindle speeds. Machining was performed by using a different types of replaceable inserts. The measurement results will be evaluated in terms of the impact of differ-ent geometry characteristics and changing speeds spindle.
    Celem artykułu jest przedstawienie wpływu obrabianego materiału i geometrii noża na wymiarową dokładność procesu toczenia. Eksperyment jest zorientowany na pomiar zgodności próbek wykonanych ze stali 11 523 z zadaną dokładnością wykonania zawartą w dokumentacji technicznej, ze stałym posuwem oraz głębokością toczenia oraz zmienną prędkością obrotową. Obróbka została wykonana z użyciem różnego rodzaju narzędzi. Wyniki pomiarów oceniono z perspektywy wpływu charakterystyk geometrycznych oraz zmian prędkości obrotowej.
    Źródło:
    Management Systems in Production Engineering; 2015, 3 (19); 128-132
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Shape Errors, Internal Porosity, Linear Dimensions Accuracy and Allowances for the Machining of Castings Made in the Replicast CS Process
    Autorzy:
    Haratym, R.
    Sieczka, M.
    Biernacki, R.
    Kwapisz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/382962.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Replicast CS process
    shape errors
    dimensional accuracy
    proces Replicast CS
    błędy kształtu
    dokładność wymiarowa
    Opis:
    This research presents comprehensive assessment of the precision castings quality made in the Replicast CS process. The evaluation was made based on quality of the surface layer, shape errors and the accuracy of the linear dimensions. Studies were carried out on the modern equipment, among other things a Zeiss Calypso measuring machine and profilometer were used. Obtained results allowed comparing lost wax process models and Replicast CS process.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 3; 25-28
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reconstruction of small components using photogrammetry: a quantitative analysis of the depth of field influence using a miniature step gauge
    Autorzy:
    Guerra, Maria Grazia
    Galantucci, Luigi Maria
    Lavecchia, Fulvio
    De Chiffre, Leonardo
    Powiązania:
    https://bibliotekanauki.pl/articles/1849141.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metrology of small parts
    uncertainty
    photogrammetry
    depth of field
    miniature step gauge
    flatness
    dimensional accuracy
    Opis:
    In this work, authors investigated the effect of the Depth of Field (DoF) reduction, arising when the acquisition of small objects is carried out with a photogrammetry-based system using a Digital Single Lens Reflex (DSLR) camera and the structure from motion (SfM) algorithm. This kind of measuring instrument is very promising for industrial metrology according to the paradigms of the fourth industrial revolution. However, when increasing the magnification level, necessary for the reconstruction of sub-millimetric features, there is a corresponding decrease of the DoF, leading to possible effects on the reconstruction accuracy. Thus, the effect of the DoF reduction was analysed through the reconstruction of a well-known artefact: the step gauge. The analysis was conducted considering the theory behind the DoF concept, the analysis of the 2D images, input of photogrammetric reconstruction and, finally, the results in terms of dimensional verification of the reconstructed step gauge.
    Źródło:
    Metrology and Measurement Systems; 2021, 28, 2; 323-342
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The quality of precision steel castings produced in the Replicast CS process
    Jakość staliwnych odlewów precyzyjnych wytwarzanych w procesie Replicast CS
    Autorzy:
    Tomasik, J.
    Haratym, R.
    Kwapisz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/381134.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    quality of cast
    surface microgeometry
    Replicast CS process
    dimensional accuracy
    jakość odlewu
    mikrogeometria powierzchni
    proces Replicast CS
    dokładność wymiarowa
    Opis:
    The quality in ceramic mould precision casting process include mostly surface quality of casts and their dimensional accuracy represented by six sigma deviation from the nominal dimensions (ΔL6δ). This article present achieved results of examination of cast’s surface finish. The dimensional analysis accuracy of expended polystyrene patterns and castings made from these patterns was executed.
    Jakość w procesie odlewnictwa precyzyjnego w formy ceramiczne obejmuje przede wszystkim stan powierzchni odlewów i ich dokładność wymiarową rozumianą jako odchyłkę sześciosigmową wymiarów nominalnych (ΔL6δ). W artykule zaprezentowano uzyskane wyniki badań stanu powierzchni odlewów. Wykonano analizę dokładności modeli z polistyrenu i odlewów wykonanych na tych modelach.
    Źródło:
    Archives of Foundry Engineering; 2011, 11, 2 spec.; 209-212
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Impact of the Multilayer Ceramic Moulds Quality on the Steel Precision Castings Dimensional Accuracy
    Autorzy:
    Haratym, R.
    Biernacki, R.
    Kwapisz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/379697.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lost wax casting
    dimensional accuracy
    multilayer ceramic mould
    ceramic mould expansion
    metoda traconego wosku
    dokładność wymiarowa
    forma wielowarstwowa
    forma ceramiczna
    Opis:
    Results of analysis presented in this paper were based on analysis of casts made especially for this research purpose and related to actual cast – industrial. The evaluation of the dimensional accuracy of casts was made in relation to the pressure of the liquid metal with consideration of the ceramic mould temperature. Ceramic moulds used in these analyses were made from crystalline quartz with an aqueous colloidal silica binder containing polymers (KK), and ethyl silicate (KE).
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 2 spec.; 27-30
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of Dental Prostheses Cast and Sintered by SLM from Co-Cr-Mo-W Alloy
    Autorzy:
    Myszka, D.
    Skrodzki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380544.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microstructure
    dental prosthesis
    precision investment casting
    selective laser melting
    dimensional accuracy
    proteza zębowa
    odlewnictwo precyzyjne
    przetapianie laserowe selektywne
    dokładność wymiarowa
    Opis:
    The article presents the results of a comparative analysis of the metal substructure for dental prosthesis made from a Co-Cr-Mo-W alloy by two techniques, i.e. precision investment casting and selective laser melting (SLM). It was found that the roughness of the raw surface of the SLM sinter is higher than the roughness of the cast surface, which is compensated by the process of blast cleaning during metal preparation for the application of a layer of porcelain. Castings have a dendritic structure, while SLM sinters are characterized by a compact, fine-grain microstructure of the hardness higher by about 100 HV units. High performance and high costs of implementation the SLM technology are the cause to use it for the purpose of many dental manufacturers under outsourcing rules. The result is a reduction in manufacturing costs of the product associated with dental work time necessary to scan, designing and treatment of sinter compared with the time needed to develop a substructure in wax, absorption in the refractory mass, casting, sand blasting and finishing. As a result of market competition and low cost of materials, sinter costs decrease which brings the total costs related to the construction unit making using the traditional method of casting, at far less commitment of time and greater predictability and consistent sinter quality.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 4; 201-207
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Taguchi Approach for Optimization of Parameters that Reduce Dimensional Variation in Investment Casting
    Autorzy:
    Bansode, S. N.
    Phalle, V. M.
    Mantha, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/381195.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technology
    innovative foundry material
    investment casting
    dimensional accuracy
    Taguchi method
    optimisation
    innowacyjna technologia odlewnicza
    innowacyjny materiał odlewniczy
    odlewnictwo
    dokładność wymiarowa
    metoda Taguchi
    optymalizacja
    Opis:
    Variation in final casting dimensions is a major challenge in the investment casting industry. Additional correction operations such as die tool reworking as well as coining operations affect foundry productivity significantly. In this paper influence of basic parameters such as wax material, mould material, number of ceramic coats and feed location on the dimensional accuracy of stainless-steel casting has been investigated. Two levels of each factor were chosen for experimental study. Taguchi approach has been used to design the experiment and to identify the optimal condition of each parameter for reduced dimensional deviation. Analysis of variance has been carried out to determine the contribution of each process parameter. The result reports that selected parameters have significant effect on the dimensional variability of investment casting. Mould material is the dominant parameter with the largest contribution followed by number of ceramic coats and wax material whereas feed location is having negligible contribution.
    Źródło:
    Archives of Foundry Engineering; 2019, 1; 5-12
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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