{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,20]],"date-time":"2026-03-20T03:45:07Z","timestamp":1773978307962,"version":"3.50.1"},"reference-count":20,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2022,8,5]],"date-time":"2022-08-05T00:00:00Z","timestamp":1659657600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005950","name":"HKUST","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100005950","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2022,9,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>When machining a complex freeform part, using a non-spherical tool could significantly improve the machining efficiency, as one can adaptively adjust the tool posture to maximize its contact area with the part surface. However, since adjusting the tool posture requires changing the tool orientation, a five-axis machine tool is needed, which is extremely expensive as compared to a conventional three-axis machine tool. Moreover, for a complex freeform surface with high curvature variation, to match its curvature change, the tool axis has to drastically change accordingly, thus inducing high velocity and acceleration on the machine tool\u2019s rotary axes. To address these issues, in this paper we propose a partition-based 3\u00a0+\u00a02-axis strategy for machining a general complex freeform surface with a non-spherical tool. As only a finite small number of distinct tool orientations are needed for 3\u00a0+\u00a02-axis machining, an indexed three-axis machine tool suffices, thus relieving the need of an expensive five-axis machine tool. In addition, the much-increased rigidity of the three linear axes of the machine tool will greatly improve the kinematics and dynamics of the machine tool and thus enhance the machining accuracy. Experiments in both computer simulation and physical machining are carried out, whose results confirm that, when compared to using a conventional spherical cutter, by using a non-spherical cutter and adaptively adjusting the contacting tool posture and the feed direction, significant improvement in machining efficiency could be achieved, e.g., more than 50% achieved in our experiments.<\/jats:p>","DOI":"10.1093\/jcde\/qwac077","type":"journal-article","created":{"date-parts":[[2022,8,5]],"date-time":"2022-08-05T13:49:20Z","timestamp":1659707360000},"page":"1585-1601","source":"Crossref","is-referenced-by-count":5,"title":["Partition-based 3 + 2-axis tool path generation for freeform surface machining using a non-spherical tool"],"prefix":"10.1093","volume":"9","author":[{"given":"Jiancheng","family":"Hao","sequence":"first","affiliation":[{"name":"Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong, China"}]},{"given":"Zhaoyu","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong, China"}]},{"given":"Xiangyu","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong, China"}]},{"given":"Fubao","family":"Xie","sequence":"additional","affiliation":[{"name":"Research Institute of Aero-Engine, Beihang University , Beijing 100191, China"}]},{"given":"Dong","family":"He","sequence":"additional","affiliation":[{"name":"Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong, China"}]},{"given":"Kai","family":"Tang","sequence":"additional","affiliation":[{"name":"Department of Mechanical and Aerospace Engineering, Hong Kong 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