Precise gouging-free tool orientations for 5-axis CNC machining

Handle URI:
http://hdl.handle.net/10754/555968
Title:
Precise gouging-free tool orientations for 5-axis CNC machining
Authors:
Kim, Yong-Joon; Elber, Gershon; Barton, Michael ( 0000-0002-1843-251X ) ; Pottmann, Helmut ( 0000-0002-3195-9316 )
Abstract:
We present a precise approach to the generation of optimized collision-free and gouging-free tool paths for 5-axis CNC machining of freeform NURBS surfaces using flat-end and rounded-end (bull nose) tools having cylindrical shank. To achieve high approximation quality, we employ analysis of hyper-osculating circles (HOCs) (Wang et al., 1993a,b), that have third order contact with the target surface, and lead to a locally collision-free configuration between the tool and the target surface. At locations where an HOC is not possible, we aim at a double tangential contact among the tool and the target surface, and use it as a bridge between the feasible HOC tool paths. We formulate all such possible two-contact configurations as systems of algebraic constraints and solve them. For all feasible HOCs and two-contact configurations, we perform a global optimization to find the tool path that maximizes the approximation quality of the machining, while being gouge-free and possibly satisfying constraints on the tool tilt and the tool acceleration. We demonstrate the effectiveness of our approach via several experimental results.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Precise gouging-free tool orientations for 5-axis CNC machining 2015, 58:220 Computer-Aided Design
Journal:
Computer-Aided Design
Issue Date:
19-Aug-2014
DOI:
10.1016/j.cad.2014.08.010
Type:
Article
ISSN:
00104485
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0010448514001791
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorKim, Yong-Joonen
dc.contributor.authorElber, Gershonen
dc.contributor.authorBarton, Michaelen
dc.contributor.authorPottmann, Helmuten
dc.date.accessioned2015-05-28T13:58:20Zen
dc.date.available2015-05-28T13:58:20Zen
dc.date.issued2014-08-19en
dc.identifier.citationPrecise gouging-free tool orientations for 5-axis CNC machining 2015, 58:220 Computer-Aided Designen
dc.identifier.issn00104485en
dc.identifier.doi10.1016/j.cad.2014.08.010en
dc.identifier.urihttp://hdl.handle.net/10754/555968en
dc.description.abstractWe present a precise approach to the generation of optimized collision-free and gouging-free tool paths for 5-axis CNC machining of freeform NURBS surfaces using flat-end and rounded-end (bull nose) tools having cylindrical shank. To achieve high approximation quality, we employ analysis of hyper-osculating circles (HOCs) (Wang et al., 1993a,b), that have third order contact with the target surface, and lead to a locally collision-free configuration between the tool and the target surface. At locations where an HOC is not possible, we aim at a double tangential contact among the tool and the target surface, and use it as a bridge between the feasible HOC tool paths. We formulate all such possible two-contact configurations as systems of algebraic constraints and solve them. For all feasible HOCs and two-contact configurations, we perform a global optimization to find the tool path that maximizes the approximation quality of the machining, while being gouge-free and possibly satisfying constraints on the tool tilt and the tool acceleration. We demonstrate the effectiveness of our approach via several experimental results.en
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0010448514001791en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Computer-Aided Design. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Computer-Aided Design, 19 August 2014. DOI: 10.1016/j.cad.2014.08.010en
dc.subjectCollision and gouging detectionen
dc.subjectThird order approximationen
dc.subjectHyper-osculating circlesen
dc.subjectCurvature matchingen
dc.subjectFree-form surfacesen
dc.titlePrecise gouging-free tool orientations for 5-axis CNC machiningen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalComputer-Aided Designen
dc.eprint.versionPost-printen
dc.contributor.institutionDepartment of Computer Science, Technion, Israelen
dc.contributor.institutionInstitute of Discrete Mathematics and Geometry, TU Wien, Austriaen
kaust.authorBarton, Michaelen
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