TY - JOUR
T1 - Feed scheduling for time-dependent machining processes by optimization of bulk removal and NC blocks
AU - Beaucamp, Anthony
AU - Mizoue, Yuichi
AU - Yamato, Shuntaro
AU - Sencer, Burak
N1 - Funding Information:
This work was supported by the Grant-in-Aid for Scientific Research No. 20K04192 from the Japan Society for Promotion of Science , the grant programs for research and development from the Mazak and OSG foundations (Japan). The authors acknowledge support from Zeeko Ltd. (UK) in loaning the fluid jet polishing system and measurement equipment, and from a donation fund by DMG Mori Seiki Co (Japan).
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2023/3
Y1 - 2023/3
N2 - 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.
AB - 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.
KW - Fluid jet polishing
KW - Material bulk removal
KW - Pulse optimization
KW - Time-dependent process
UR - http://www.scopus.com/inward/record.url?scp=85143504765&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85143504765&partnerID=8YFLogxK
U2 - 10.1016/j.jmatprotec.2022.117786
DO - 10.1016/j.jmatprotec.2022.117786
M3 - Article
AN - SCOPUS:85143504765
SN - 0924-0136
VL - 312
JO - Journal of Materials Processing Technology
JF - Journal of Materials Processing Technology
M1 - 117786
ER -