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Machine Tool Internal Encoders as Sensors for the Detection of Tool Wear
Högskolan Väst, Institutionen för ingenjörsvetenskap. (Skärande bearbetning, PTW)ORCID-id: 0000-0003-1408-2249
Högskolan Väst, Institutionen för ingenjörsvetenskap. (PTW)ORCID-id: 0000-0002-3436-3163
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för industriell produktion. Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT). (Skärande bearbetning, PTW)ORCID-id: 0000-0003-0976-9820
2012 (engelsk)Inngår i: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 4, s. 46-51Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Tool wear in machining changes the geometry of the cutting edges, which effect the direction and amplitudes of the cutting forcecomponents and the dynamics in the machining process. These changes in the forces and dynamics are picked up by the internalencoders and thus can be used for monitoring of changes in process conditions. This paper presents an approach for the monitoringof a multi-tooth milling process. The method is based on the direct measurement of the output from the position encoders availablein the machine tool and the application of advanced signal analysis methods.

The paper investigates repeatability of the method developed and how to detect wear in an individual tooth in a milling cutter. Theresults of this work show that various signal features which correlate with tool wear can be extracted from the first few oscillatingcomponents, representing the low-frequency components, of the machine axes velocities. The responses from the position encodersexhibit good repeatability, especially short term repeatability while the long-term repeatability is more unreliable. A worn toothincreases the irregularity in the encoder responses and can be identified at an early stage of the cut.

sted, utgiver, år, opplag, sider
2012. Vol. 4, s. 46-51
Emneord [en]
Tool wear detection, milling, encoder signals, repeatability, signal analysis
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-5078DOI: 10.1016/j.procir.2012.10.009ISI: 000315024500008Scopus ID: 2-s2.0-84879829011OAI: oai:DiVA.org:hv-5078DiVA, id: diva2:602524
Konferanse
3rd CIRP Conference on Process Machine Interactions (3rd PMI), Nagoya Univ, Nagoya, JAPAN, OCT 29-30, 2012
Tilgjengelig fra: 2013-02-01 Laget: 2013-02-01 Sist oppdatert: 2020-02-26bibliografisk kontrollert

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