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Current rise criterion

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dc.contributor.author Ammouri, A.H.
dc.contributor.author Hamade, R.F.
dc.date.accessioned 2017-01-17T13:52:27Z
dc.date.available 2017-01-17T13:52:27Z
dc.date.copyright 2014 en_US
dc.identifier.issn 0268-3768 en_US
dc.identifier.uri http://hdl.handle.net/10725/5022
dc.description.abstract Presented in this work is a novel tool-condition criterion dubbed as the current rise criterion (CRC). This criterion is based on the measured current values of the machine tool’s spindle and drive motors. The CRC comprises two components: (1) the current rise index (CRI) and (2) a sensitivity factor (SF) indicated as a subscript to the CRI. Current rise criterion is described mathematically as CRC = CRISF. The CRI that accounts for the damage (including wear) suffered by the tool is calculated as the square root of the sum of the squared percent increase in the root mean square (RMS) current values of the spindle and drive motors. To indicate the relative contribution of each of the machine tool motors to the CRI, the sensitivity factor (SF) reflects the ratio of the drive motor current percent rise to that of the spindle motor. The reference current used in calculating the percent rise of the motor current for both CRI and SF is measured at the first cut of the fresh tool. The versatility of the CRC was demonstrated here using two different machining processes: milling and drilling. Quantitative polar maps of the CRI and the associated sensitivity factor of cutting tools as well as qualitative descriptions of the various modes of tool condition afflicting the cutting tools are presented. CRC is demonstrated to be capable of monitoring the tool condition for a variety of cutting parameters of speeds and feeds. Another study demonstrated the versatility of CRC as a discriminator of the quality of chisel drills. It was found that the criterion successfully tracks the tool condition along a variety of process levels. CRC may be used to monitor tool condition and prognostics across practically all machining operations and process parameters, thus rendering the criterion “process independent.” CRC can also be used to monitor the change in power consumption of machine tools while cutting with worn tools. en_US
dc.language.iso en en_US
dc.title Current rise criterion en_US
dc.type Article en_US
dc.description.version Published en_US
dc.title.subtitle a process-independent method for tool-condition monitoring and prognostics en_US
dc.author.school SOE en_US
dc.author.idnumber 201306469 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal The International Journal of Advanced Manufacturing Technology en_US
dc.journal.volume 72 en_US
dc.journal.issue 1 en_US
dc.article.pages 509-519 en_US
dc.keywords Current rise criterion en_US
dc.keywords Current rise index en_US
dc.keywords Sensitivity factor en_US
dc.keywords Tool-condition maps en_US
dc.keywords Tool-condition monitoring en_US
dc.identifier.doi http://dx.doi.org/10.1007/s00170-014-5679-9 en_US
dc.identifier.ctation Ammouri, A. H., & Hamade, R. F. (2014). Current rise criterion: a process-independent method for tool-condition monitoring and prognostics. The International Journal of Advanced Manufacturing Technology, 72(1-4), 509-519. en_US
dc.author.email ali.ammouri@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://link.springer.com/article/10.1007/s00170-014-5679-9 en_US
dc.author.affiliation Lebanese American University en_US


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