Journal
ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING
Volume 71, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.rcim.2021.102145
Keywords
Prognostics and health management (PHM); Transfer learning; convolutional neural networks (CNNs); Computerized numerical control (CNC)
Funding
- Coventry University
- Institute of Digital Engineering (U.K.)
- National Natural Science Foundation of China [51975444]
- Unipart Powertrain Application Ltd. (U.K.)
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By utilizing a transfer learning enabled CNN approach, this study effectively predicts and evaluates the wear condition of cutting tools, providing viable strategies for health management in CNC machining applications.
Effective Prognostics and Health Management (PHM) for cutting tools during Computerized Numerical Control (CNC) processes can significantly reduce downtime and decrease losses throughout manufacturing processes. In recent years, deep learning algorithms have demonstrated great potentials for PHM. However, the algorithms are still hindered by the challenge of the limited amount data available in practical manufacturing situations for effective algorithm training. To address this issue, in this research, a transfer learning enabled Convolutional Neural Networks (CNNs) approach is developed to predict the health state of cutting tools. With the integration of a transfer learning strategy, CNNs can effectively perform tool health state prediction based on a modest number of the relevant images of cutting tools. Quantitative benchmarks and analyses on the performance of the developed approach based on six typical CNNs models using several optimization techniques were conducted. The results indicated the suitability of the developed approach, particularly using ResNet-18, for estimating the wear width of cutting tools. Therefore, by exploiting the integrated design of CNNs and transfer learning, viable PHM strategies for cutting tools can be established to support practical CNC machining applications.
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