GAVLAS, Martin, Michal KACO, Vladimir DEKÝŠ, Miroslav ŠPIRIAK, Silvia SLABEJOVÁ, Andrej CZÁN, Jozef HOLUBJAK, Milena KUŠNEROVÁ, Marta HARNIČÁROVÁ a Jan VALÍČEK. Research on the Oscillation in Centerless Grinding Technology When Machining Bearing Steel. Materials. Basel, Switzerland: MDPI, neuveden, 15/2022, s. nestránkováno, 14 s. ISSN 1996-1944. 2022.
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Základní údaje
Originální název Research on the Oscillation in Centerless Grinding Technology When Machining Bearing Steel
Autoři GAVLAS, Martin (garant), Michal KACO, Vladimir DEKÝŠ, Miroslav ŠPIRIAK, Silvia SLABEJOVÁ, Andrej CZÁN, Jozef HOLUBJAK, Milena KUŠNEROVÁ (203 Česká republika, domácí), Marta HARNIČÁROVÁ (203 Česká republika, domácí) a Jan VALÍČEK (203 Česká republika, domácí).
Vydání Materials, Basel, Switzerland, MDPI, 2022, 1996-1944.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 20501 Materials engineering
Stát vydavatele Švýcarsko
Utajení není předmětem státního či obchodního tajemství
WWW URL
Kód RIV RIV/75081431:_____/22:00002387
Organizační jednotka Vysoká škola technická a ekonomická v Českých Budějovicích
UT WoS 000831636700001
Klíčová slova anglicky centerless grinding; vibrodiagnostics; analysis of the run-up and run-down; boxplot; spectral analysis; STFT; geometric deviation
Štítky KSTR5, RIV22, WOS
Změnil Změnila: Mgr. Nikola Petříková, učo 28324. Změněno: 21. 3. 2023 18:34.
Anotace
In today’s engineering industry, technical diagnostics presents many advantages for improving the management of machining centers and automated production lines. As the fourth industrial revolution is currently being implemented, which includes machine diagnostics, the idea of adding information from the field of vibrodiagnostics was born. The vibration of the workpiece or machine tool negatively affects the geometric parameters of the machined surfaces of the workpiece. Through vibrodiagnostics, the influence of cutting parameters on the oscillation of a bearing steel workpiece during centerless grinding is investigated. The presented publication deals with the vibration of the mechanical parts of a centerless grinding machine. The oscillations are recorded by acceleration sensors, which are also placed on the support ruler in which the workpieces are guided, and the recorded data are input parameters for statistical processing of acceleration values in the form of statistical characteristics (minimum, lower quartile, median, upper quartile, maximum). In this paper, this procedure was applied for the selection of the optimum cutting parameters (for the speed of the support wheel), where the machining parameters at which the minimum oscillation values occur were selected based on the above-mentioned statistical characteristics. This optimization procedure revealed increased vibration values which reached the highest amplitude on the ruler, namely accelerations of 11 m/s2 , the origin of which was subsequently detected by STFT because the occurrence of resonance events or the excitation of natural frequencies of the machine were suspected. The STFT analysis identified a resonant region at machine start-up determined by the spindle speed which excites the resonance on the machine. The speed range between 1950 and 2150 rpm, which corresponds to the built-up resonance, was provided to the technologists to ensure that the machinebwas not operated around this resonance region at 400 and 760 Hz until the undesired phenomenon was eliminated. The results of the individual measurements provided information on the ideal setting of the cutting parameters and the current state of the machine.
VytisknoutZobrazeno: 29. 3. 2024 08:59