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Wyszukujesz frazę "CNC machine tool" wg kryterium: Temat


Tytuł:
Software-defined workpiece positioning for resource-optimized machine tool utilization
Autorzy:
Ströbel, Robin
Probst, Yannik
Hutt, Louisa
Fleischer, Jürgen
Powiązania:
https://bibliotekanauki.pl/articles/2200260.pdf
Data publikacji:
2023
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
resource efficiency
workpiece positioning
CNC machine tool
optimisation
Opis:
Advancing climate change, tense world markets, and political pressure steadily increase the demand for resource-optimized production solutions. Herby, the positioning of the raw material in the machine tool is an important factor that has received little attention. Traditionally, this is done centrally on the machine table, which leads to locally increased wear of the feed axis. Furthermore, positioning directly influences energy consumption during machining. Consequently, the longest possible component utilization through optimum wear and energy optimization creates a direct conflict of objectives. To solve this conflict, this paper presents an automated approach for software-defined workpiece positioning and NC-Code optimization regarding the axis-specific energy consumption and the spindle condition of ball screws. An approach for mapping the energy consumption and the directly measured spindle condition is presented. Both represent input variables of the cost function. Approaches for the optimization of the position as well as for the practical implementation are proposed.
Źródło:
Journal of Machine Engineering; 2023, 23, 1; 71--84
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface Texturing on a CNC Machine Tool Using a Laser
Autorzy:
Józwik, Jerzy
Dziedzic, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2201901.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
laser micromachining
laser surface texturing
CNC machine tool
surface topography
Opis:
In the paper stages of the process of constituting a surface with the texture of the injection mold of a wheeled vehicle steering wheel using laser technology was discusses. During micromachining process with texturing there is a 5-axis CNC-controlled CNC machine TOOL LASERTEC 65 Shape used with a rigid monoBLOCK structure with Siemens 840D sl control, equipped with a fiber laser with a power of 100W, a wavelength of 1064 nm and a focal length of 181 mm. Processing technology was prepared using Autodesk Maya, Adobe Photoshop, Adobe Illustrator, NX9, Lastex v. 2.27.26 computer programs and machine tool control systems. Results of machining the steering wheel of a wheeled vehicle with a concentrated laser beam are discussed. Geometric structure of the surface after texturing was evaluated. Presented technology can be used to obtain the desired texture properties on the surface of the parts.
Źródło:
Advances in Science and Technology. Research Journal; 2023, 17, 1; 160--172
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tool path planning for five-axis end milling of cycloidal gears and its full tooth profile accuracy measurement
Autorzy:
Wang, Jian
Liao, Longxing
Luo, Shanming
Mo, Jingyu
Powiązania:
https://bibliotekanauki.pl/articles/38890069.pdf
Data publikacji:
2023
Wydawca:
Instytut Podstawowych Problemów Techniki PAN
Tematy:
cycloidal gear
end milling
five-axis CNC machine tool
tooth path planning
full tooth profile accuracy measurement
Opis:
This paper proposes a method of end milling of cycloidal gears using a five-axis computer analytical control (CNC) machine tool. Firstly, the basic principle of the five-axis end milling of cycloidal gears is introduced. The cutting characteristics of the ball-end and the flat-end cutters are analyzed. Secondly, the path planning method of the five-axis end milling of cycloidal gears is researched. A curvature matching method is used to check for local over-cut interference and a minimum distance method is used to check for global collision interference. These two interferences are avoided by calculating the feasible range of cutter orientations and adjusting the dips of cutter shafts. Tests of end milling of cycloidal gears are carried out using a ball-end cutter and a flat-end cutter, respectively. Finally, full tooth profile accuracy measurements are undertaken with an image-measuring instrument to assess the quality of cycloidal gears processed in this way. This study provides a theoretical basis for the improvement of the tooth profile accuracy and surface quality of cycloidal gears.
Źródło:
Engineering Transactions; 2023, 71, 1; 3-21
0867-888X
Pojawia się w:
Engineering Transactions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of machine learning in the precise and cost-effective self-compensation of the thermal errors of CNC machine tools – a review
Autorzy:
Czwartosz, Robert
Jedrzejewski, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/2142358.pdf
Data publikacji:
2022
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
CNC machine tool
thermal error compensation
machine learning
self-learning
Opis:
The current development of production engineering takes place through the innovative improvement of machine tools and machining processes at the constantly growing application of intelligent self-improvement functions. Machine learning opens up possibilities for machine tool self-improvement in real time. This paper discusses the state of knowledge relating to the application of machine learning for precise and cost-effective thermal error self-compensation. Data acquisition and processing, models and model learning and self-learning methods are also considered. Three highly effective error compensation systems (supported with machine learning) are analysed and conclusions and recommendations for future research are formulated.
Źródło:
Journal of Machine Engineering; 2022, 22, 3; 59--77
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic Analysis of the Starting and Braking of the Table of CNC Machine Tool
Autorzy:
Józwik, Jerzy
Zawada-Michałowska, Magdalena
Moń, Damian
Powiązania:
https://bibliotekanauki.pl/articles/2201776.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
dynamics analysis
vision systems
CNC machine tool
feed rate
CNC machine tools accuracy
CNC machine table
Opis:
The aim of the paper is a dynamic analysis of the starting and braking of the table of a numerically controlled CNC machine tool during idle motion. The experimental test was performed on the vertical table of the FV580A machining centre using the Phantom v1610 high-speed vision camera. The dynamics characteristics of the table movement were registered and the dynamics estimates of the movement were determined. The influence estimation of the parameters of the machine tool table motion on the value of the determined estimates was made. The results of measurements were discussed and guidelines and in order to minimise disturbances were formulated. The test results were summarised and discussed in the form of charts and tables. The directions of further research in the discussed subject area were also defined
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 3; 34--46
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podstawowe charakterystyki sensorów
Autorzy:
Skoczyński, Wacław
Powiązania:
https://bibliotekanauki.pl/articles/302627.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo Druk-Art
Tematy:
sensor
obrabiarka CNC
układ wzmacniający
CNC machine tool
strengthening system
Opis:
Systemy pomiarowe w urządzeniach wytwórczych wykorzystują różne czujniki i elementy wykonawcze do pomiaru i manipulowania układami mechanicznymi. Czujniki mają wiele cech, które wpływają na ich możliwości pomiarowe oraz ich przydatność dla konkretnej aplikacji. W czujnikach analogowych każdej wartości z zakresu zmian mierzonego parametru odpowiada określony sygnał wyjściowy, zmieniający się w sposób ciągły w zależności od zmian parametru wejściowego. Przykładem czujników analogowych są potencjometry, transformatorowe czujniki przemieszczeń liniowych o układzie różnicowym LVDT (ang. Linear Variable Differential Transformer) z przesuwanym rdzeniem, piezoelektryczne przetworniki siły i termistory.
Źródło:
Napędy i Sterowanie; 2019, 21, 6; 96-105
1507-7764
Pojawia się w:
Napędy i Sterowanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of new technology to improve the quality of production on a CNC machine tool
Autorzy:
Gołębski, Rafał
Sikora, Piotr
Gnatowski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/88568.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
CNC machine tool
production
quality
technology
obrabiarka CNC
produkcja
jakość
technologia
Opis:
The article presents an analysis of the modification of the production process on a CNC machine tool. The process was modified by using a new deep hole drilling procedure. As a consequence, an improvement in the quality of manufactured elements in series production has been achieved. The applications were supported by metrological analysis of the product.
Źródło:
System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 583-590
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Comparative Analysis of the Impact of CNC Miller Programming on Machining Effects
Autorzy:
Kuczmaszewski, J.
Pieśko, P.
Zawada-Michałowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/2064953.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
programming
CAM
CNC machine tool
Opis:
This paper presents a comparison of the impact of the programming methods of a CNC miller on the machining effects. As a part of the study, the test samples were made of the EN AW-2024 aluminium alloy. The CNC machining programs compared were developed with two programming methods: by inputting the CNC machining program directly from the CNC miller's control panel (machine level programming) and in a CAM software environment (CAM programming). The machining effect indicators adopted included: machining time, surface quality, and dimensional deviation of specific geometrical features. A measurement of the machining times revealed than the CAM programming reduced the machining time up to 20% from the machining time of the machine level programming. A conclusion stands valid that CNC machining programs developed in the CAM software environment are more efficient than CNC programming directly with the CNC miller control panel, most likely due to the machining path optimisation in CAM. In addition, given the experimental test results, it was found that smaller machined errors were also obtained for CAM programming. To conclude, the comparative analysis revealed that CAM programming provided better machining results than the machine level programming.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 161--167
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identifying the causes of deterioration in the surface finish of a workpiece machined on a rail wheel lathe
Identyfikacja przyczyn pogorszenia stanu powierzchni obrabianej na tokarce kołowej
Autorzy:
Lehrich, K.
Wąsik, M.
Kosmol, J.
Powiązania:
https://bibliotekanauki.pl/articles/1365325.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
self-excited vibrations
modal analysis
finite element method
machine tool CNC
drgania samowzbudne
analiza modalna
metoda elementów skończonych
obrabiarka CNC
Opis:
Operational problems often remain undetected until a machine is commissioned and first machining is attempted. Heavy-duty machines are a specific group of machine tools due to the character of their manufacturing process. As they are often manufactured as single units, which involves high production costs, there are no prototype versions built and no tests are performed on them. Therefore, before the machine is complete, computer simulation methods are often the only validation tools of a machine project at the stage of designing. The variety of applications and the individuality of production are the reasons for the lack of standards defining the rigidity and precision of the cutting process performed by heavy machine tools. In this case analysis, the authors are considering a heavy duty rail wheel lathe, in which some issues were found during its exploitation which make it impossible to achieve the required shape, dimensions and surface finish, while working at set parameters. This article presents a comprehensive approach to the identification of the form and frequency of a machine tool supporting structure’s self-vibrations and their potential sources in the case study of a horizontal lathe for railway wheelsets. The authors, drawing on the results of their long-standing research and their experience in the field of heavy machine tool design and testing, indicate self-excited vibrations as a key factor machine’s operational behaviour, which is rarely considered in this type of machines.
Problemy eksploatacyjne są często wykrywane dopiero po uruchomieniu maszyny i po pierwszych próbach obróbki. Obrabiarki ciężkie są specyficzną grupą maszyn do obróbki ze względu na charakter ich procesu produkcyjnego. W procesach produkcyjnych tego typu maszyn, ze względu na jednostkowy charakter produkcji i koszty, nie buduje się wersji prototypowych i nie wykonuje się na nich testów. Tym samym, przed wersją ostateczną, metody symulacji komputerowych są często jedynymi narzędziami walidacji projektu na etapie projektowania. Różnorodność zastosowań i indywidualność produkcji są przyczyną braku opracowanych norm określających sztywność i precyzję obróbki wykonywanej przez ciężkie obrabiarki. Autorzy rozpatrują przypadek tokarki ciężkiej do zestawów kół kolejowych, w której podczas eksploatacji stwierdzono pewne problemy, które uniemożliwiają wytwarzanie przy zadanych parametrach w celu osiągnięcia pożądanego kształtu, wymiarów i jakości powierzchni. W artykule przedstawiono kompleksowe podejście do identyfikacji kształtu i częstotliwości drgań własnych konstrukcji nośnej obrabiarki oraz ich potencjalnych źródeł, na przykładzie poziomej tokarki do zestawów kolejowych. Autorzy w swoich badaniach zgodnie z uzyskanymi wynikami i ich doświadczeniem z zakresu projektowania ciężkich obrabiarek i badań podkreślają drgania samowzbudne, które są rzadko brane pod uwagę w tego typu maszynach, ale mają znaczący wpływ na zachowanie modalne maszyny.
Źródło:
Eksploatacja i Niezawodność; 2018, 20, 3; 352-358
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative occupational risk assessment in a CNC machine tool operator position
Autorzy:
Pacana, A.
Powiązania:
https://bibliotekanauki.pl/articles/112082.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
methods of occupational risk assessment
CNC machine tool
occupational risk
ocena ryzyka zawodowego
obrabiarka CNC
ryzyko zawodowe
Opis:
Law requires from employers to assess occupational risk in workplaces. A well-executed occupational risk assessment promotes the improvement of working conditions and reduces a negative impacts on employees’ health and life. Employers by conducting occupational risk assessment not only meet legal requirements but also benefit from it in two ways. They eliminate loss of an enterprise connected with employees’ absence, and they also decrease the probability of high compensation pay due to situations that have a destructive influence on the employees' health. However, in order to benefit from such actions, firstly, it is necessary to select a risk assessment method properly, then to apply it and implement preventive measures. The paper presents the results of the occupational risk assessment carried out on the example of a CNC machine operator by means three-stage methods in accordance with the PN-N-18001, PHA and Risc Score. Despite the subjectivity of the assessment, there were differences in the results. Thus, it is advisable to choose a risk assessment method skilfully, for example by comparing several similar methods.
Źródło:
Production Engineering Archives; 2017, 16; 28-31
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Angular positioning accuracy of rotary table and repeatability of five-axis machining centre dmu 65 monoblock
Autorzy:
Józwik, J.
Czwarnowski, M
Powiązania:
https://bibliotekanauki.pl/articles/103390.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
positioning
diagnostics
accuracy
CNC machine tool
laser interferometer
Opis:
The study aims to evaluate angular positioning accuracy and repeatability of DMU 65 monoBLOCK numerically controlled machine tool. The measurements were carried out with XL-80 Laser Interferometer with XR20-W attachment. The measurements were conducted according to the standard PN-ISO230-2. Test methodology and measurement results analysis are presented in a form of figures and tables. The final part presents conclusions from the analysis.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 28; 89-95
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostic of CNC lathe with QC 20 ballbar system
Autorzy:
Józwik, J.
Semotiuk, L.
Kuric, I.
Powiązania:
https://bibliotekanauki.pl/articles/103158.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
CNC machine tool
CNC Lathe QC 20 Ballbar
diagnostics systems
accuracy
geometric errors
deviation
squareness
reversal spikes
backlash
Opis:
This paper presents the evaluation of the influence of the feedmotion speed on the value of selected geometric errors of CNC lathe CTX 310 eco by DMG, indentified by QC 20 Ballbar system. Diagnostically evaluated were: the deviation of the axis squareness, reversal spike, and backlash. These errors determine the forming of the dimensional and shape accuracy of a machine tool. The article discusses the process of the CNC diagnostic test, the diagnostic evaluation and formulates guidelines on further CNC operation. The results of measurements were presented in tables and diagrams.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 28; 96-102
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Linear positioning errors of 3-axis machine tool
Autorzy:
Józwik, J.
Mazurek, P.
Wieczorek, M.
Czwarnowski, M
Powiązania:
https://bibliotekanauki.pl/articles/118243.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
CNC machine tool
diagnostic systems
positioning error
Opis:
This paper presents results of 3-axis CNC machine tool diagnostics performed with XL-80 laser interferometer and XC-80 environmental compensation unit, including pressure, humidity and temperature sensors. Furthermore, the paper includes the methodology and results of conducted measurements of linear positioning errors, which supplied data for further analysis. The conclusion section presents important results of conducted experiments. Measurement results were presented in figures, charts and tables.
Źródło:
Applied Computer Science; 2015, 11, 2; 86-94
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algorithm for ISO 14649 (STEP-NC) feature recognition
Autorzy:
Pobożniak, J.
Powiązania:
https://bibliotekanauki.pl/articles/407339.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ISO 14649
ISO 10303
machining feature recognition
STEP-NC
CNC machine tool programming
computer aided process planning
CAD/CAPP/CAM integration
Opis:
The paper focuses on the algorithm for the recognition of manufacturing features defined in ISO 14649 (STEP-NC). First, the features defined in STEP-NC standard are discussed and then commonly used feature recognition methods are presented. Then the developed algorithm for recognition is presented in details starting with the discussion of STEP-NC features from the point of view of their recognition. The steps of the algorithm responsible for the recognition of profile based, transition and group features are presented. The software developed to verify the algorithm is also described. The final part includes the directions for the future research works. This paper adds to the works aimed to strengthen the position and use the full benefits of this new ISO 14649 standard.
Źródło:
Management and Production Engineering Review; 2013, 4, 4; 50-58
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement uncertainty analysis of different CNC machine tools measurement systems
Autorzy:
Semotiuk, L.
Józwik, J.
Kuric, I.
Powiązania:
https://bibliotekanauki.pl/articles/102390.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
measurement uncertainty
inspection probe
control system
CNC machine tool
Opis:
In this paper the results of measurement uncertainty tests conducted with a Heidenhain TS 649 probe on CNC machine tools are presented. In addition, identification and analysis of random and systematic errors of measurement were presented. Analyses were performed on the basis of measurements taken on two different CNC machine tools with Heidenhain control system. The evaluated errors were discussed and compensation procedures were proposed. The obtained results were described in tables and figures.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 19; 41-47
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł

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