Feed scheduling for time-dependent machining processes by optimization of bulk removal and NC blocks

Anthony Beaucamp, Yuichi Mizoue, Shuntaro Yamato, Burak Sencer

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Time-dependent processes such as CNC fluid jet polishing require feed-rate scheduling through deconvolution of a target removal profile and tool influence function. The dynamic constraints associated with the machine tool driving the process should be considered when solving this numerical problem. This research investigates how material bulk removal affects the scheduled feed-rate and acceleration both in the spatial and time domain, and proposes a method for matching exactly the maximum acceleration with the machine tool limit. Furthermore, the influence of CNC interpolator dynamics is investigated by means of the controller pulse response method. An optimization method for NC blocks is then proposed in order to achieve feed-rates that best match the intended profile. The benefit of bulk removal and NC blocks optimization is validated by fabrication, with and without optimization, of cylindrical Fresnel lenses. Both the shape accuracy and optical performance of the optimally fabricated lens are shown to substantially improve, suggesting that the proposed optimization method has strong potential for industrial application.

Original languageEnglish
Article number117786
JournalJournal of Materials Processing Technology
Publication statusPublished - 2023 Mar
Externally publishedYes


  • Fluid jet polishing
  • Material bulk removal
  • Pulse optimization
  • Time-dependent process

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering


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