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An Improved Tool Wear Monitoring Method Using Local Image and Fractal Dimension of Workpiece

Author

Listed:
  • Haicheng Yu
  • Kun Wang
  • Ruhai Zhang
  • Xiaojun Wu
  • Yulin Tong
  • Ruiyuan Wang
  • Dedao He

Abstract

Tool wear is a key factor that dominates the surface quality and distinctly influences the generated workpiece surface texture. In order to realize accurate evaluation of the tool wear from the generated workpiece surface after machining process, a new tool wear monitoring method is developed by fractal dimension of the acquired workpiece surface digital image. A self-made simple apparatus is employed to capture the local digital images around the region of interest. In addition, a skew correction method based on local fast Fourier transformation energy is also proposed for the surface texture direction adjustment. Furthermore, the tool wear quantitative evaluation was derived based on fractal dimension utilizing its high reliability for inherent irregularity description. The proposed tool wear monitoring method has verified its feasibility as well as its effectiveness in actual milling experiments using the material of AISI 1045 in a vertical machining center. Testing results demonstrate that the proposed method was capable of tool wear condition evaluation.

Suggested Citation

  • Haicheng Yu & Kun Wang & Ruhai Zhang & Xiaojun Wu & Yulin Tong & Ruiyuan Wang & Dedao He, 2021. "An Improved Tool Wear Monitoring Method Using Local Image and Fractal Dimension of Workpiece," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-11, June.
    • Handle: RePEc:hin:jnlmpe:9913581
    DOI: 10.1155/2021/9913581
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