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Iso-level tool path planning for free-form surfaces

Zou, Qiang, Zhang, Juyong, Deng, Bailin and Zhao, Jibin 2014. Iso-level tool path planning for free-form surfaces. Computer-Aided Design 53 , pp. 117-125. 10.1016/j.cad.2014.04.006

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Abstract

The aim of tool path planning is to maximize the e�ciency 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 con ict with each other. Existing methods smooth iso-scallop paths one-by- one, which makes the �nal tool path far from being globally optimal. In this paper, a new framework of tool path optimization is proposed, where di�erent objectives can be considered simultaneously, to plan globally optimal tool path with respect to iso-scallop and smoothness. The idea is to view a family of iso-level curves of a scalar function over the surface as the tool path so that desired tool path can be generated by �nding the function that minimizes certain energy functional. 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 e�ectiveness of the proposed methods.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Computer Science & Informatics
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Uncontrolled Keywords: iso-level tool path, globally optimal, PDE, di�erential geometry
Publisher: Elsevier
ISSN: 0010-4485
Date of First Compliant Deposit: 27 April 2017
Date of Acceptance: 14 April 2014
Last Modified: 04 Jun 2017 09:43
URI: http://orca.cf.ac.uk/id/eprint/98572

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