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Fuzzy feed rate and cutting speed optimization in turning

Abstract

There are several methods of monitoring metal cutting processes. In this study, the combination of various methods in order to define an overall “cutting state” of a turning process is discussed along with an application to use these methods for adaptive fuzzy feed rate and cutting speed optimising control. For this purpose, different methods of monitoring individual cutting phenomena such as chip length and vibration level are aggregated and the combination of this information is considered to be the cutting state of the process. Expert data has been collected from a series of experiments concerning the apparent state of these phenomena as well as required control action. An adaptive optimizing fuzzy controller has been designed based on the concept of the cutting state and collected expert rules. The automatically classified cutting state as well as the control action based on this state is compared to expert data. There are notable differences which are analysed and solutions and further research are suggested based on the points requiring further improvement.

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Acknowledgements

This study is an expanded version of results presented in the 26th International Conference on Flexible Automation and Intelligent Machining [14].

Author information

Correspondence to Juho Ratava.

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Conflict of interests

The authors declare that they have no conflict of interest.

Additional information

The experimental part of this study has been funded by Tekes, Finnish Funding Agency for Innovation (“Vmax” project).

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Cite this article

Ratava, J., Lohtander, M. Fuzzy feed rate and cutting speed optimization in turning. Int J Adv Manuf Technol 99, 2081–2092 (2018). https://doi.org/10.1007/s00170-018-1845-9

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Keywords

  • Adaptive feed rate control
  • Chatter
  • Chip control
  • Fuzzy control
  • Intelligent machining