Research on three-section type tool path planning algorithm for tooth hot pressing model cutting
•A gingival line data optimization algorithm based on Bézier Curve is proposed.•A three-section type tool path planning method is proposed.•Experimental results show the burrs of machine-cut products are both less and small. In the process of automatic cutting of the tooth hot-pressed model, there a...
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| Published in: | Computers & industrial engineering Vol. 163; p. 107817 |
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| Main Authors: | , , , , , , |
| Format: | Journal Article |
| Language: | English |
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01.01.2022
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| ISSN: | 0360-8352 |
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| Abstract | •A gingival line data optimization algorithm based on Bézier Curve is proposed.•A three-section type tool path planning method is proposed.•Experimental results show the burrs of machine-cut products are both less and small.
In the process of automatic cutting of the tooth hot-pressed model, there are problems that the gingival line feature point data obtained by scanning is not suitable as a cutting route data and the tool path planning methods also lack universality. A trajectory conversion algorithm based on Bézier curve is proposed to process the feature points of gingival line by dividing the points to be optimized into four categories, which also uses the morphological characteristics of the gingival line to divide the hot-pressed model into three parts: anterior sides, posterior sides, left and right posterior sides. Each part adopts a different tool path planning method. The data analysis shows that if the density parameter ρ is 4, the number of optimized feature points can be increased by 3.5 times, and included angle of straight-line can be increased by about 16.5% on average. The path and posture of the tool changes continuously and smoothly, and the transition is natural at the junction. Cutting experiments further show that it takes 50 s for the machine to obtain an invisible orthotics. Regarding product quality as a criterion, the burrs of machine-cut products are both less and small. In a nutshell, the research effectively improves the stability of product quality and promotes production efficiency. |
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| AbstractList | •A gingival line data optimization algorithm based on Bézier Curve is proposed.•A three-section type tool path planning method is proposed.•Experimental results show the burrs of machine-cut products are both less and small.
In the process of automatic cutting of the tooth hot-pressed model, there are problems that the gingival line feature point data obtained by scanning is not suitable as a cutting route data and the tool path planning methods also lack universality. A trajectory conversion algorithm based on Bézier curve is proposed to process the feature points of gingival line by dividing the points to be optimized into four categories, which also uses the morphological characteristics of the gingival line to divide the hot-pressed model into three parts: anterior sides, posterior sides, left and right posterior sides. Each part adopts a different tool path planning method. The data analysis shows that if the density parameter ρ is 4, the number of optimized feature points can be increased by 3.5 times, and included angle of straight-line can be increased by about 16.5% on average. The path and posture of the tool changes continuously and smoothly, and the transition is natural at the junction. Cutting experiments further show that it takes 50 s for the machine to obtain an invisible orthotics. Regarding product quality as a criterion, the burrs of machine-cut products are both less and small. In a nutshell, the research effectively improves the stability of product quality and promotes production efficiency. |
| ArticleNumber | 107817 |
| Author | Xu, Jiayi Fang, Shaowei Li, Changliang Zhang, Lijun Wang, Hang Guo, Weijian Yang, Ning |
| Author_xml | – sequence: 1 givenname: Lijun surname: Zhang fullname: Zhang, Lijun email: zlj-2@163.com organization: College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China – sequence: 2 givenname: Shaowei surname: Fang fullname: Fang, Shaowei organization: College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China – sequence: 3 givenname: Jiayi surname: Xu fullname: Xu, Jiayi organization: College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China – sequence: 4 givenname: Ning surname: Yang fullname: Yang, Ning organization: College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China – sequence: 5 givenname: Weijian surname: Guo fullname: Guo, Weijian organization: College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China – sequence: 6 givenname: Hang surname: Wang fullname: Wang, Hang organization: College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China – sequence: 7 givenname: Changliang surname: Li fullname: Li, Changliang organization: College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China |
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| Keywords | Trajectory conversion algorithm Tool path planning algorithm Three-section type Tooth hot-pressed model Bézier curve |
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A retrieval analysis publication-title: European Journal of Orthodontics doi: 10.1093/ejo/cjv003 – volume: 35 issue: 11 year: 2017 ident: 10.1016/j.cie.2021.107817_b0115 article-title: Intersection seam of sphere and tube welding robot trajectory optimization based on spatial offset curve publication-title: Transactions of the China Welding Institution – volume: 6 start-page: 641 issue: 11 year: 2013 ident: 10.1016/j.cie.2021.107817_b0030 article-title: Invisible aligner technique without brackets publication-title: Chinese Journal of Practical Stomatology – volume: 172 start-page: 95 year: 2019 ident: 10.1016/j.cie.2021.107817_b0010 article-title: Semi-automatic and robust determination of dental arch form in dental cone-beam CT with B-spline approximation publication-title: Computer Methods and Programs in Biomedicine doi: 10.1016/j.cmpb.2019.02.013 – volume: 01 start-page: 5 year: 2014 ident: 10.1016/j.cie.2021.107817_b0135 article-title: A Method of Robot's Trajectory Planning Based on Homogeneous Transformation Matrix publication-title: Combined machine tool and automatic machining technology – year: 2015 ident: 10.1016/j.cie.2021.107817_b0085 article-title: A path generation for automated vehicle based on Bezier curve and via-points publication-title: Robotics and Autonomous Systems doi: 10.1016/j.robot.2015.08.001 – volume: 64 year: 2020 ident: 10.1016/j.cie.2021.107817_b0175 article-title: An error-bounded B-spline curve approximation scheme using dominant points for CNC interpolation of micro-line toolpath publication-title: Robot Cim Int Manuf – volume: 03 start-page: 217 year: 2020 ident: 10.1016/j.cie.2021.107817_b0130 article-title: A Novel Method of Trajectory Planning in Cartesian Space publication-title: Robot – start-page: 361 year: 2019 ident: 10.1016/j.cie.2021.107817_b0020 article-title: Geometry for Naval Architects publication-title: Butterworth-Heinemann – volume: 40 start-page: 1300 issue: 5 year: 2013 ident: 10.1016/j.cie.2021.107817_b0095 article-title: An exact method to find a circle passing through two points and minimizing the maximal weighted distance to a set of points publication-title: Computers and Operations Research doi: 10.1016/j.cor.2012.12.011 – volume: 01 start-page: 263 year: 2020 ident: 10.1016/j.cie.2021.107817_b0165 article-title: Path Planning of Mobile Robot Based on Fusion of Bezier Curve and ACO publication-title: Machinery Design & Manufacture – volume: 07 start-page: 91 year: 2017 ident: 10.1016/j.cie.2021.107817_b0110 article-title: Robot trajectory planning based on spline function and improved genetic algorithm publication-title: Manufacturing Technology & Machine Tool – volume: 27 start-page: 148 issue: 05 year: 2014 ident: 10.1016/j.cie.2021.107817_b0190 article-title: Example analysis of the solution of plane equation publication-title: Journal of Puyang Vocational and Technical College – volume: 28 start-page: 49 issue: 1 year: 2007 ident: 10.1016/j.cie.2021.107817_b0120 article-title: A study of different archwire ligatioms in fixed appliance publication-title: Journal of Taishan Medical College – start-page: 4 year: 2017 ident: 10.1016/j.cie.2021.107817_b0180 article-title: Comparative study on the accuracy of three - dimensional model of teeth (occlusal) obtained by different methods publication-title: Zunyi Medical University – volume: 37 start-page: 539 issue: 5 year: 2015 ident: 10.1016/j.cie.2021.107817_b0050 article-title: Periodontal health during clear aligners treatment: a systematic review publication-title: European Journal of Orthodontics doi: 10.1093/ejo/cju083 – volume: 126 start-page: 479 year: 2018 ident: 10.1016/j.cie.2021.107817_b0105 article-title: Chetwynd, An approach for smooth trajectory planning of high-speed pick-and-place parallel robots using quintic B-splines publication-title: Mechanism and Machine Theory doi: 10.1016/j.mechmachtheory.2018.04.026 – volume: 14 start-page: 7 issue: 04 year: 2019 ident: 10.1016/j.cie.2021.107817_b0155 article-title: Examples of methods to determine equations of several planes publication-title: Journal of Guiyang University – volume: 38 start-page: 827 issue: 7 year: 2016 ident: 10.1016/j.cie.2021.107817_b0160 article-title: The therapeutic effect of straight wire arch and invisible orthodontic device without bracket on secondary malformation of periodontitis publication-title: Journal of Ningxia Medical College – volume: 03 start-page: 261 year: 2020 ident: 10.1016/j.cie.2021.107817_b0205 article-title: A Method of Segmental Interpolation Trajectory Planning for Robotic Arm publication-title: Machinery Design & Manufacture – volume: 51 start-page: 98+102 issue: 07 year: 2020 ident: 10.1016/j.cie.2021.107817_b0170 article-title: Research on spline curve Cutting algorithm of NC leather cutting machine. China Southern Agricultural publication-title: Machinery |
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| SubjectTerms | Bézier curve Three-section type Tool path planning algorithm Tooth hot-pressed model Trajectory conversion algorithm |
| Title | Research on three-section type tool path planning algorithm for tooth hot pressing model cutting |
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