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Estimation of Reliable Replacement Time of Cutting Tool in Tooling Machines Using the Energy-Based Reliability Model (ERM)

[+] Author Affiliations
Po Ting Lin, Kuan-Ting Chen

Chung Yuan Christian University, Chungli City, Taoyuan, Taiwan

Paper No. DETC2014-34636, pp. V02AT03A042; 9 pages
  • ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 2A: 40th Design Automation Conference
  • Buffalo, New York, USA, August 17–20, 2014
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-4631-5
  • Copyright © 2014 by ASME


Real-time monitoring systems have been developed for tooling machine for the purpose of investigating the time-dependent cutting conditions, to detect instantaneous events, and to estimate life of cutting tools and the machine itself. An Energy-based Reliability Model (ERM) has been developed for real-time monitoring of cutting conditions. A standardized inspection process was defined and the two most sensible signals, vibrational signals and temperature increments, are collected to monitor the accumulation of dissipated energy during the tooling processes. The ERM then computes the normalized accumulative dissipated energy in replace of evaluating surface quality of workpiece at the end of each tooling process. This paper focuses on the implementation of ERM in the turning process on a lathe. The experimental results showed the dissipated energy linearly grows with respect to the amount of volume removal from the workpiece. The ERM built from the experimental results under the same condition were then utilized to estimate the turning performance under different experimental conditions. As a result, similar trends of dissipated energy versus volume removal were found. Therefore, ERM can be utilized to estimate a reliable replacement time of cutting tool in tooling machines.

Copyright © 2014 by ASME



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