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B-spline tool offset of a free-form curve in the shoe last high-speed machining CNC system

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Abstract

Aiming at the special requirements of a shoe last high-speed machining process and the large dataset which could be gained by the reverse engineering technique, this paper analyzes the conventional tool-offset methods and presents a B-spline tool-offset model. A simple vector-analyzed algorithm to smooth the tool-offset curve in which there are local strange points is proposed, and then the second tool-offsetting, which obtains the fine data of the machining tool’s center points, is directly processed. To reduce the error from tool offsetting of the C2 continuity curve, this paper gains a smoother curve after processing via the edge points joint algorithm, which effectively solved the overcut or undercut problems in the high-speed machining of the spline curve.

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Authors and Affiliations

  1. School of Mechanical and Power Engineering, Shanghai Jiaotong University, Hua Shan Road 1954, Shanghai, 200030, China

    Jun Hu, Hong Shen, Shuishen Zeng & Yuhan Wang

Authors
  1. Jun Hu
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  2. Hong Shen
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  3. Shuishen Zeng
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  4. Yuhan Wang
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Correspondence to Jun Hu.

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Hu, J., Shen, H., Zeng, S. et al. B-spline tool offset of a free-form curve in the shoe last high-speed machining CNC system. Int J Adv Manuf Technol 30, 864–869 (2006). https://doi.org/10.1007/s00170-005-0129-3

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  • DOI: https://doi.org/10.1007/s00170-005-0129-3

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