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Precision Cutting Tool Wear Monitoring Method by Knife-Edge Diffraction Interferometry

[+] Author Affiliations
ChaBum Lee

Tennessee Technological University, Cookeville, TN

Paper No. MSEC2018-6463, pp. V003T02A026; 7 pages
doi:10.1115/MSEC2018-6463
From:
  • ASME 2018 13th International Manufacturing Science and Engineering Conference
  • Volume 3: Manufacturing Equipment and Systems
  • College Station, Texas, USA, June 18–22, 2018
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5137-1
  • Copyright © 2018 by ASME

abstract

This paper presents a non-contact, convenient, efficient cutting tool wear monitoring technique of dicing wheel based on a knife-edge diffraction interferometry. Dicing is a standard technology for fabricating components of micro-electromechanical systems, and the wear of dicing wheels may influence the components’ quality with respect to cutting-surface quality and subsurface damage. Based on the edge diffraction principle that utilizes interference of transmitted wave and a diffracted wave at the wheel end, the diffraction patterns according to dicing wheel conditions were scanned, and cross-correlation was used to extract attrition and abrasive wear from the measured diffraction patterns. Attrition and abrasive wear were related with lag and similarity coefficients of cross-correlation, respectively. This measurement technique can be used for in-process monitoring of wheel conditions or wheel radius compensation and can be included in dicing parameter optimization process.

Copyright © 2018 by ASME

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