Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Condition monitoring of machine tools and machining processes using internal sensor signals
KTH, School of Industrial Engineering and Management (ITM), Production Engineering, Machine and Process Technology.
2010 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Condition monitoring of critical machine tool components and machining processes is a key factor to increase the availability of the machine tool and achieving a more robust machining process. Failures in the machining process and machine tool components may also have negative effects on the final produced part. Instabilities in machining processes also shortens the life time of the cutting edges and machine tool.

The condition monitoring system may utilise information from several sources to facilitate the detection of instabilities in the machining process. To avoid additional complexity to the machining system the use of internal sensors is considered. The focus in this thesis has been to investigate if information related to the machining process can be extracted directly from the internal sensors of the machine tool.

The main contibutions of this work is a further understanding of the direct response from both linear and angular position encoders due the variations in the machining process. The analysis of the response from unbalance testing of turn tables and two types of milling processes, i.e. disc-milling and slot-milling, is presented. It is shown that operational frequencies, such as cutter frequency and tooth-passing frequency, can be extracted from both active and inactive machine axes, but the response from an active machine axis involves a more complex analysis. Various methods for the analysis of the responses in time domain, frequency domain and phase space are presented.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology , 2010. , xviii, 93 p.
Series
Trita-IIP, ISSN 1650-1888 ; 2010:01
Keyword [en]
condition monitoring, machine tool, machining process, milling, position encoders, signal analysis
Identifiers
URN: urn:nbn:se:kth:diva-12872ISBN: 978-91-7415-600-3 (print)OAI: oai:DiVA.org:kth-12872DiVA: diva2:319488
Presentation
2010-04-09, Sal M312, KTH, Brinellvägen 68, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC 20100518Available from: 2010-05-18 Created: 2010-05-18 Last updated: 2011-04-15Bibliographically approved
List of papers
1. New Aspects on Condition Monitoringof Machine Tools and Machining Processes
Open this publication in new window or tab >>New Aspects on Condition Monitoringof Machine Tools and Machining Processes
2009 (English)In: Proceedings of the 3’rd Swedish Production Symposium, 2009Conference paper, Published paper (Other academic)
Keyword
machine tool, condition monitoring, Poincaré maps
Identifiers
urn:nbn:se:kth:diva-13352 (URN)
Note
QC20100614Available from: 2010-06-14 Created: 2010-06-14 Last updated: 2011-04-15Bibliographically approved
2. Machine Tool and Process Condition Monitoring Using Poincaré Maps
Open this publication in new window or tab >>Machine Tool and Process Condition Monitoring Using Poincaré Maps
2010 (English)In: The International Conference on Competitive Manufacturing (COMA’10), 2010Conference paper, Published paper (Other academic)
Keyword
condition monitoring, machine tool, nonlinear analysis
Identifiers
urn:nbn:se:kth:diva-13355 (URN)
Note
QC20100614Available from: 2010-06-14 Created: 2010-06-14 Last updated: 2011-04-15Bibliographically approved

Open Access in DiVA

fulltext(5278 kB)28227 downloads
File information
File name FULLTEXT02.pdfFile size 5278 kBChecksum SHA-512
c8fb7c47ec373c2e53cfe5e48fb81dca9e5d2476ab3a4a7de88dd01035a9fc04998e26b8a6822fe7cada08c635c43577cbad699193712081ed6b8dcc9bf1df17
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Repo, Jari
By organisation
Machine and Process Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 28227 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 541 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf