Monitoring of Micro-Drill Wear by Using the Machine Vision System

머신비전 시스템을 이용한 마이크로드릴 마멸의 상태감시

  • Published : 2006.06.01


Micro-drill wear deteriorates accuracy and productivity of the micro components. In order to improve productivity and qualify of micro components, it is required to investigate micro-drill wear exactly. In this study, a machine vision system is proposed to measure the wear of micro-drills using a precision servo stage. Calibration experiments are conducted to compensate for the machine vision system. In this paper, worn volume, area and length are defined as wear amounts. Micro-drill wear is reconstructed as the 3D topography and the quantized wear amount by using the shape from focus (SFF) method and wear parameters. Experiments have been conducted with HSS twist micro-drills and SM45C carbon steel workpieces. Validity of the proposed machine vision system is confirmed through experiments.


  1. Lin, S. C. and C. J. Ting, 1995, 'Tool Wear Monitoring in Drilling Using Force Signals,' WEAR, Vol. 180, pp. 53-60
  2. Shih, A. J., M. BakkaI, S. B. McSpadden, and R. O. Scattergood, 2005, 'Thrust Force, Torque and Tool Wear in Drilling the Bulk Metallic Glass,' International Journal of Machine Tools and Manufacture, Vol. 45, pp. 863-872
  3. Bono, M. and J. Ni, 2005,. 'Location of the Maximum Temperature on the Cutting Edges of a Drill,' International Journal of Machine Tools and Manufacture, In Printing
  4. Nickel, J., A. N. Shuaib, B. S. Yilbas, and S. M. Nizam, 2000, 'Evaluation of the Wear of Plasrnanitrided and TiN-coated HSS Drills using Conventional and Micro-PIXE Techniques,' WEAR, Vol. 239, pp. 155-167
  5. Chen, Y. C. and Y. S. Liao, 2003, 'Study on Wear Mechanisms in Drilling of Inconel 718 Superalloy,' Journal of Materials Processing Technology, Vol..140, pp. 269-273
  6. Gonzalez, R. C. and R. E. Woods, 2002, Digital Image Processing, Prentice Hall, Inc., New Jersey
  7. Nayar, S. K. and Nakagawa, Y, 1994, 'Shape from Focus,' IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 16, No. 8, pp. 824-831
  8. Yoon, H. S. and Chung, S. C., 2004, 'Vision Inspection of Micro-drilling Processes on the Machine Tool,' Transactions of the NAMRI/SME, Vol .32, pp. 391-398
  9. Yoon, H. S. and Chung, S. C., 2004, 'Machine Vision Inspection System of Micro-drilling Processes On the Machine Tool,' Transactions of KSME(A), Vol. 28, No. 6, pp. 867-875 (in Korean)
  10. Park, C. Y and Chung, S. C., 2006, '3D Wear Analysis of Valve Assemblies by using the Machine Vision,' Transactions of KSME(A), In Printing (in Korean)
  11. Altintas, Y, 2000, Manufacturing Automation, Cambridge University Press, Cambridge

Cited by

  1. Construction of an automation system for the inspection and packing processes of a screw/bolt production line vol.27, pp.6, 2013,