Original scientific paper

Influence of tool wear on the mechanism of chips segmentation and tool vibration

Aco Antić orcid.org/0000-0002-8520-762X ; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Dražan Kozak orcid.org/0000-0001-5245-4686 ; Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, Trg Ivane Brlić Mažuranić 2, 35000 Slavonski Brod, Croatia
Borut Kosec ; University of Ljubljana, Faculty of Natural Sciences and Engineering, Aškerčeva cesta 12, 1000 Ljubljana, Slovenia
Goran Šimunović orcid.org/0000-0002-7159-2627 ; Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, Trg Ivane Brlić Mažuranić 2, 35000 Slavonski Brod, Croatia
Tomislav Šarić orcid.org/0000-0002-6339-7936 ; Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, Trg Ivane Brlić Mažuranić 2, 35000 Slavonski Brod, Croatia
Dušan Kovačević ; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Robert Čep orcid.org/0000-0001-9610-4215 ; VŠB-Technical University of Ostrava, Faculty of Mechanical Engineering, 17 listopadu 15, 708 33 Ostrava, Czech Republic

Abstract

The tool wear has a significant impact on the cutting process and therefore tool wear monitoring is especially important for building intelligent machine tools which are capable of assessing their own states and reacting to important changes. This approach is based on the assumption that there exists a relationship between the spectrum of high-frequency vibrations measured on tool holder, in immediate vicinity of the cutting zone, and the tool wear degree. The wear causes changes in tool tip geometry, which has significant influence on the process of chip forming. At the same time, the erratic nature of chip forming process excites the cutting zone, generating a very broad spectrum of vibrations. Due to high input energy, these vibrations are very intensive, and spread through the entire machining system. In the paper, experimental results are shown which pertain to the relationship between the power spectral density (PSD) within 5 kHz to 50 kHz interval.

Keywords

chip forming; tool wear; tool vibrations; turning

Hrčak ID:

97486

URI

https://hrcak.srce.hr/97486

Publication date:

22.2.2013.

Article data in other languages: croatian

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