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Iso-level tool path planning for free-form surfaces

Zou, Qiang; Zhang, Juyong; Deng, Bailin; Zhao, Jibin


Qiang Zou

Juyong Zhang

Bailin Deng

Jibin Zhao


The aim of tool path planning is to maximize the efficiency against some given precision criteria. In practice, scallop height should be kept constant to avoid unnecessary cutting, while the tool path should be smooth enough to maintain a high feed rate. However, iso-scallop and smoothness often conflict with each other. Existing methods smooth iso-scallop paths one-by-one, which make the final tool path far from being globally optimal. This paper proposes a new framework for tool path optimization. It views a family of iso-level curves of a scalar function defined over the surface as tool path so that desired tool path can be generated by finding the function that minimizes certain energy functional and different objectives can be considered simultaneously. We use the framework to plan globally optimal tool path with respect to iso-scallop and smoothness. The energy functionals for planning iso-scallop, smoothness, and optimal tool path are respectively derived, and the path topology is studied too. Experimental results are given to show effectiveness of the proposed methods.


Zou, Q., Zhang, J., Deng, B., & Zhao, J. (2014). Iso-level tool path planning for free-form surfaces. Computer aided design, 53, 117-125.

Journal Article Type Article
Acceptance Date Apr 14, 2014
Online Publication Date Apr 21, 2014
Publication Date 2014-08
Deposit Date Apr 19, 2016
Publicly Available Date Apr 19, 2016
Journal Computer-aided design
Print ISSN 0010-4485
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 53
Pages 117-125
Keywords Iso-level tool path; Globally optimal; PDE; Iso-scallop; Smooth
Public URL
Publisher URL
Additional Information This is an authors accepted version of an article published in Computer-aided design, 2014, v.53.


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Copyright Statement
© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license

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