@article{MTMT:30565263, title = {A discrete simulation-based algorithm for the technological investigation of 2.5D milling operations}, url = {https://m2.mtmt.hu/api/publication/30565263}, author = {Jacsó, Ádám and Szalay, Tibor and Carlos Jauregui, Juan and Rodriguez Resendiz, Juvenal}, doi = {10.1177/0954406218757267}, journal-iso = {P I MECH ENG C-J MEC}, journal = {PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE}, volume = {233}, unique-id = {30565263}, issn = {0954-4062}, abstract = {Many applications are available for the syntactic and semantic verification of NC milling tool paths in simulation environments. However, these solutions - similar to the conventional tool path generation methods - are generally based on geometric considerations, and for that reason they cannot address varying cutting conditions. This paper introduces a new application of a simulation algorithm that is capable of producing all the necessary geometric information about the machining process in question for the purpose of further technological analysis. For performing such an analysis, an image space-based NC simulation algorithm is recommended, since in the case of complex tool paths it is impossible to provide an analytical description of the process of material removal. The information obtained from the simulation can be used not only for simple analyses, but also for optimisation purposes with a view to increasing machining efficiency.}, keywords = {Material removal rate; Tool path; 2.5D milling; material removal simulation; cutter engagement}, year = {2019}, eissn = {2041-2983}, pages = {78-90}, orcid-numbers = {Jacsó, Ádám/0000-0001-8247-2332; Szalay, Tibor/0000-0003-3446-2898} } @inproceedings{MTMT:3282441, title = {Analysing and Optimizing 2.5D Circular Pocket Machining Strategies}, url = {https://m2.mtmt.hu/api/publication/3282441}, author = {Jacsó, Ádám and Szalay, Tibor}, booktitle = {Advances in Manufacturing}, doi = {10.1007/978-3-319-68619-6_34}, unique-id = {3282441}, year = {2018}, pages = {355-364}, orcid-numbers = {Jacsó, Ádám/0000-0001-8247-2332; Szalay, Tibor/0000-0003-3446-2898} } @article{MTMT:3077374, title = {Extension of empirical specific cutting force model for the process of fine chip-removing milling}, url = {https://m2.mtmt.hu/api/publication/3077374}, author = {Biró, István and Szalay, Tibor}, doi = {10.1007/s00170-016-8957-x}, journal-iso = {INT J ADV MANUFACT TECHNOL}, journal = {INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY}, volume = {88}, unique-id = {3077374}, issn = {0268-3768}, abstract = {Specific cutting force is a frequently used parameter to classify and describe the energetic environment of mechanical machining operations. It defines the ratio of cutting forces and theoretical chip section during machining. This definition makes it possible to create general technological models for precise process planning. Classical models of cutting forces already indicate that specific cutting force cannot be modelled using a single low-level analytical function due to the marked presence of size effect. The problem is amplified in the case of micro-chip forming, where the relative scale of elastic and plastic deformations in the machined material differ from those experienced in conventional cutting conditions. Previous research proved that boundaries of specific cutting forces can be defined by values of exact uncut chip thicknesses, in which case the sections of specific cutting force may indicate different types of material deforming processes. The aim of current research presented in this paper is to extend the empirical model of specific cutting force for fine chip-removing cutting processes by identifying a new boundary section of uncut chip thickness. Therefore, a new boundary chip thickness was defined based on data obtained with reference to experimental cutting force. New boundary chip thickness follows the so-far proven tendencies of already known section borders and this enables the extension of the validity range of classical approaches presented by specific cutting force models beyond macro-scaled chip forming to micro-scaled chip forming processes. The extension of the model considers the effect of cutting parameters, primarily that of feed rate.}, year = {2017}, eissn = {1433-3015}, pages = {2735-2743}, orcid-numbers = {Biró, István/0000-0002-5616-0973; Szalay, Tibor/0000-0003-3446-2898} } @article{MTMT:3178806, title = {Two-Dimensional Finite Element Analysis of Turning Processes}, url = {https://m2.mtmt.hu/api/publication/3178806}, author = {Borsos, Benjámin and Csörgő, András and Hidas, Anna and Kotnyek, Bálint and Szabó, Antal and Kossa, Attila and Stépán, Gábor}, doi = {10.3311/PPme.9283}, journal-iso = {PERIOD POLYTECH MECH ENG}, journal = {PERIODICA POLYTECHNICA-MECHANICAL ENGINEERING}, volume = {61}, unique-id = {3178806}, issn = {0324-6051}, abstract = {Despite crucial efforts invested into computational methods, explicit dynamics simulation of cutting operations may still be unacceptably expensive. Therefore, in many cases a two- dimensional model is considered. Here an overview of the possibilities of two-dimensional simulations is given. For this, simulation and measurement of a straight turning process on AISI 1045 steel is presented. In the numerical analysis, material behavior and its failure was described by Johnson-Cook law, considering damage evolution. Coupled thermo-mechanical model with mass-scaling and adaptive remeshing was built. The numerically obtained cutting force was compared to the measured data. It was found that the forces obtained with simulation and the measured ones show good agreement. Sensitivity analyses were performed to examine the influence of specific parameters on the reaction force. The effect of these parameters is also shown.}, year = {2017}, eissn = {1587-379X}, pages = {44-54}, orcid-numbers = {Kossa, Attila/0000-0003-3638-3237; Stépán, Gábor/0000-0003-0309-2409} } @article{MTMT:3160524, title = {Burr minimisation in face milling with optimised tool path}, url = {https://m2.mtmt.hu/api/publication/3160524}, author = {Póka, György and Németh, István and Mátyási, Gyula}, doi = {10.1016/j.procir.2016.11.113}, journal-iso = {PROCEDIA CIRP}, journal = {PROCEDIA CIRP}, volume = {57}, unique-id = {3160524}, year = {2016}, eissn = {2212-8271}, pages = {653-657}, orcid-numbers = {Póka, György/0000-0002-7585-986X; Németh, István/0000-0001-7122-3891} }