Temat: tool path - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Influence of the path type on selected technological effects in the trochoidal milling
Autorzy:: Waszczuk, K.
Karolczak, P.
Wiśniewska, M.
Kowalski, M.
Powiązania:: https://bibliotekanauki.pl/articles/103363.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: hard machining
trochoidal milling
tool path
Opis:: The article presents basic information about machining materials in hardened state – it particularly describes a method of the so called hard milling. The paper discusses strategies and methods in hard milling, presents trochoidal milling, its advantages and disadvantages. It also presents research methodology and effects which concerned determination of a tool path impact on selected technological effects after trochoidal milling of the groove.
Źródło:: Advances in Science and Technology. Research Journal; 2017, 11, 1; 147-153
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A New Strategy of Tool Path Planning Based on Hydrodynamic Data to Machine Marine Propeller
Autorzy:: Breteau, T.
Damay, T.
Duc, E.
Hascoët, J.-Y.
Powiązania:: https://bibliotekanauki.pl/articles/971234.pdf
Data publikacji:: 2009
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: propeller
tool path planning
machining methodology
Opis:: Marine propellers are complex surfaces that are usually machined with a perfect roughness in order not to disturb the theoretical flow. Because this requirement is penalizing from a manufacturing point of view, the global objective of the study is to propose an approach in which the machining parameters are linked to functional properties of the blade in order to remove the polishing phase. To reach this objective, hydrodynamic data are used: streak lines, that are computed during the propeller design phase, characterize the fluid behavior at the close vicinity of the blade. Those lines, which are theoretically continuous at the leading edge, turn out to be discontinuous, due to the computing method. To be consistent with the fluid behavior as much as possible, the idea presented in the paper is to compose a continuous trajectory, especially at the leading edge, to mill the surface. Thus, an algorithm is developed to plan tool paths which are smoothed at leading edge using Bezier curves. Moreover, this algorithm allows to quantify the cusp height at the leading edge to avoid a drop in performance using criteria linked to the dynamical behavior of a five axis machine tool. In this work, a strategy is developed and enables multiaxial milling of a blade surface by using geometric and hydrodynamic data and by respecting the associated constraints.
Źródło:: Journal of Machine Engineering; 2009, 9, 1; 29-40
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Advanced open CNC system with in process tool path compensation
Autorzy:: Hascoet, J.-Y.
Rauch, M.
Powiązania:: https://bibliotekanauki.pl/articles/99609.pdf
Data publikacji:: 2014
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: open NC controller
simulation,manufacturing
tool path
compensation
Opis:: Despite several technical advances over the last decade, CNC controlled manufacturing still bases upon outdated paradigms: manufacturing data are generated and transferred along a heterogeneous and divided CAD/CAM/CNC data chain. The role of the NC controller is limited to the execution of tool paths generated beforehand and the possibility of online tool path adaptation is not planned in legacy NC controllers. In contrast, practical observations make this legacy approach quite inappropriate in an industrial framework. Significant geometrical variability is sometimes observed both prior and after milling in parts that belong to the same batch. In that context, the integration of online tool path adaptation strategies appears to be essential. In this paper, a methodology for correcting the tool path in real-time thanks to measurements provided by a laser scanner moving with the tool is introduced. The resulting local information is used to approximate the workpiece exact geometry by using a POD (Prosper Orthogonal Decomposition) snapshot technique and to adjust the path in accordance. This method has the great advantage of taking into consideration geometrical features such as curvature, twist but also additional parameters whose impact on the tool path is significant (unexpected initial setup of the part for example). This method has been implemented on the advanced CNC programming platform of the laboratory, which hosts in particular a high speed machining centre equipped with an open NC controller.
Źródło:: Journal of Machine Engineering; 2014, 14, 3; 48-57
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Machining performance optimization of Parallel Kinematic Machines tools with regard to their anisotropic behaviour
Autorzy:: Pateloup, S.
Bonnemains, T.
Chanal, H.
Bouzgarrou, B. C.
Duc, E.
Ray, P.
Powiązania:: https://bibliotekanauki.pl/articles/1429122.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: parallel kinematic machine too
kinematic model
static model
tool path optimization
Opis:: Today, Parallel Kinematic Machines tools (PKMs) appear in automotive and aeronautic industries. These machines allow a benefit of productivity due to their higher kinematics performances than Serial Kinematic Machines tools (SKMs). However, their machining accuracy is lower. Moreover, the compensation of the defects which penalizes the machined parts quality is difficult due to their anisotropic behaviour. Thus, this article deals with the development of methods improving the machined parts quality and the productivity. In order to improve parts quality, the static behaviour of the machine structure is considered with a model taking into account joints and legs compliances. Then, it allows determining a static workspace. About the productivity, the improvement of kinematics performances is performed through an optimization work of the non productive tool path between cutting operations. The computed tool path must verify a minimum time constraint and avoid collisions between the tool and the machined part. All the methods are illustrated with the PKM Tripteor X7 developed by PCI.
Źródło:: Journal of Machine Engineering; 2008, 8, 4; 13-24
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Influence of the Trochoidal Tool Path on Quality Surface of Groove Walls
Autorzy:: Waszczuk, Kamil
Skowronek, Hubert
Karolczak, Paweł
Kowalski, Maciej
Kołodziej, Marek
Powiązania:: https://bibliotekanauki.pl/articles/102883.pdf
Data publikacji:: 2019
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: trochoidal milling
tool path
slot milling
hard machining
frezowanie trochoidalne
ścieżka narzędzia
frezowanie rowków
obróbka twarda
Opis:: The article presents the results of machining materials in hardened state. In the paper, different trochoidal tool paths are compared with each other and with the conventional milling. The results of measurements show the relationship between tool path, roughness and waviness of grooves wall. The paper also presents pictures of grooves which were made. These results provide comparative material useful in the choice of the best milling strategy to the cutting process.
Źródło:: Advances in Science and Technology. Research Journal; 2019, 13, 3; 38-42
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Influence of the Trochoidal Tool Path Generation Method on the Milling Process Efficiency
Autorzy:: Waszczuk, Kamil
Powiązania:: https://bibliotekanauki.pl/articles/102721.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: trochoidal milling
hard machining
slot milling
tool path
trochoidal step over
frezowanie trochoidalne
obróbka twarda
frezowanie rowków
ścieżka narzędzia
krok trochoidalny
Opis:: The article presents a comparison of three trochoidal paths: written by G-Code, generated using the overlays from the machine level, and generated using the CAD/CAM environment. The parameters determining the effectiveness of the process were: maximum achievable feed speed, surface roughness and waviness, cutting forces and cutting temperature when milling NC6 steel (50HRC) using a 10 mm cutter dimeter. The main measurement results include: an increase in the maximum feed speed value by almost 35% when using the A and C paths compared to the type B path and nearly a double increase in surface roughness when using the path generated using the CAD/CAM environment compared to the B path. The most important conclusions was that it is not always possible to machine with the recommended parameters by the tool manufacturer, especially when machining narrow grooves. It was proven that that the use of paths with the displacement described by arcs and straight lines as a trochoidal step over reduces the possibility of milling at high feed rate.
Źródło:: Advances in Science and Technology. Research Journal; 2020, 14, 3; 199-203
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

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

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Skocz do pozycji: 8.

Tytuł:: Comparative Study on Path Interval and Two Tool Condition Parameters in Ball and Filleted End Milling
Autorzy:: Sekine, Tsutomu
Powiązania:: https://bibliotekanauki.pl/articles/2023326.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: path interval
filleted end mill
tool condition parameter
machining conditions
ball end mill
odstęp między ścieżkami
frez końcowy stożkowy
parametr stanu narzędzia
stan obróbki
frezy kulowe
Opis:: Milling is widely used as a versatile, highly automated manufacturing process. The selection of tool and its machining conditions is an ever-present challenge inherent in the process. To provide some findings contributable for the process planning, this study focuses on ball and filleted end milling. After the path interval determinations were explained briefly, the characteristics of each procedure were revealed with experimental verifications. The results of computational procedures showed good agreement with the experimental ones. Then, predominant frictional distance and cutting speed were proposed for effective selection of machining conditions. The discussion was given based on the results obtained from the demonstrations. Moreover, the relationships to path interval were elucidated through the discussion. In conclusion, several outcomes were organized from the experimental and numerical evidences.
Źródło:: Advances in Science and Technology. Research Journal; 2021, 15, 4; 311-320
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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