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Investigation on path optimization and look-ahead speed control algorithm during numerical control grinding of dentures of glass ceramics

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Abstract

The processing efficiency of dentures is generally quite low due to the complex profile form and high brittleness of the dentures. However, there is little research for efficient path optimization and look-ahead speed control algorithm in denture machining field, which hinders the improvement of the machining efficiency and denture quality. In this work, an optimization method for both straight transition and curve paths was proposed, and look-ahead speed control algorithms for different machining paths were designed. The anomalous points were deleted according to the preprocessing algorithm before the path optimization. The straight transition path and curve path were fitted by the quasi-parabola model and cubic B-spline curve, respectively. The error between the optimized path and original path was analyzed, and the results demonstrated that the path optimization methods were reliable. A look-ahead speed control model based on S-type speed control was proposed, and the boundary conditions for different paths were calculated. The simulated and experimental results indicated that optimized algorithm significantly improved the machining efficiency and reduced the vibration of the machine tool. The accuracy and surface roughness of the denture processed using the optimized algorithm met the medical standard. This work can provide a theoretical guidance for high-efficiency and precision machining of dentures of glass ceramics.

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The datasets supporting the results of this article are included within the article and its additional files.

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Funding

This work was supported by the National Natural Science Foundation of China (Nos. 51875137 and 52005134), Natural Science Foundation of Heilongjiang Province of China (E2018033), and China Postdoctoral Science Foundation (2020M670901).

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Authors and Affiliations

  1. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China

    Yong Zhang, Tao Wu, Chen Li, Jianxun Liu & Yongfei Wang

Authors
  1. Yong Zhang
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  2. Tao Wu
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  3. Chen Li
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  4. Jianxun Liu
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  5. Yongfei Wang
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Contributions

Yong Zhang and Chen Li contributed in the idea and paper writing. Tao Wu and Jianxun Liu contributed in the algorithm design, grinding experiment, and paper writing. Yongfei Wang contributed in the grinding experiment. All the authors contributed in proofreading the manuscript.

Corresponding author

Correspondence to Chen Li.

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We would like to submit the manuscript entitled “Investigation on path optimization and look-ahead speed control algorithm during numerical control grinding of dentures of glass ceramics,” for your consideration for publication in International Journal of Advanced Manufacturing Technology. No conflict of interest exists in the submission of this manuscript, and the manuscript is approved by all the authors for publication. On behalf of the co-authors, we declare that the work described was original research that has not been published previously and not under consideration for publication elsewhere, in whole or in part.

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The authors declare that they have no conflict of interest.

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Cite this article

Zhang, Y., Wu, T., Li, C. et al. Investigation on path optimization and look-ahead speed control algorithm during numerical control grinding of dentures of glass ceramics. Int J Adv Manuf Technol 113, 1899–1913 (2021). https://doi.org/10.1007/s00170-021-06707-1

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  • DOI: https://doi.org/10.1007/s00170-021-06707-1

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