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Generating spiral tool paths based on spiral enter assistant line

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Abstract

In order to increase cutting width, decrease tool path length, and improve machining efficiency, the spiral enter assistant line (SEAL) is embedded into a convex pocket to plan a spiral tool path. First, the inner offset curve of the pocket boundary undergoes equidistant division to acquire the external equidistant points. Subsequently, principal component analysis (PCA) and length factors optimization are employed to obtain SEAL. Next, vector operation is performed on the external equidistant points and SEAL to calculate the corresponding internal points. After connecting the external equidistant points and the corresponding internal points, a B-spline spiral tool path is planned based on linear interpolation and B-spline curve fitting. In addition, the length factors can be adjusted to modify the distribution and length of the tool path. Theoretical analysis and machining experiments demonstrate that compared to other conventional algorithms, the spiral tool path presented in this study has obvious advantages on cutting width, tool path length, and machining efficiency. These advantages are especially pronounced when the major principal axis is much longer than the minor principal axis.

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Authors and Affiliations

  1. School of Traffic and Transportation Engineering, Central South University, Changsha, 410075, China

    Zhiping Liu, Xiongbing Li, Yongfeng Song & Bing Yi

Authors
  1. Zhiping Liu
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  2. Xiongbing Li
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  3. Yongfeng Song
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  4. Bing Yi
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Correspondence to Xiongbing Li.

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Liu, Z., Li, X., Song, Y. et al. Generating spiral tool paths based on spiral enter assistant line. Int J Adv Manuf Technol 92, 869–879 (2017). https://doi.org/10.1007/s00170-017-0130-7

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  • DOI: https://doi.org/10.1007/s00170-017-0130-7

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