Real-Time Local Optimal Bézier Corner Smoothing for CNC Machine Tools

A straight line or G01 is the most common path in computer numerical control (CNC) contour machining. However, non-smooth corners introduce discontinuous movement along each axis during machining. The commonly used strategy is to redesign a corner into a smooth corner path. Therefore, optimal corner...

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Autores principales:	Tzyy-Chyang Lu, Shyh-Leh Chen
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Bézier corner curve CNC machine tool corner smoothing particle swarm optimization (PSO) Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/dd1a31605b8a4581937d452eaef4ad9c
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id	oai:doaj.org-article:dd1a31605b8a4581937d452eaef4ad9c
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spelling	oai:doaj.org-article:dd1a31605b8a4581937d452eaef4ad9c2021-11-20T00:02:36ZReal-Time Local Optimal Bézier Corner Smoothing for CNC Machine Tools2169-353610.1109/ACCESS.2021.3123329https://doaj.org/article/dd1a31605b8a4581937d452eaef4ad9c2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9590511/https://doaj.org/toc/2169-3536A straight line or G01 is the most common path in computer numerical control (CNC) contour machining. However, non-smooth corners introduce discontinuous movement along each axis during machining. The commonly used strategy is to redesign a corner into a smooth corner path. Therefore, optimal corner smoothing should simultaneously find an optimal corner path and a corner speed that satisfied the axis motion limits. To achieve this goal, we use particle swarm optimization (PSO) to find the optimal Bézier curve and the optimal corner speed, then convert the axis constraints into polynomial inequalities and use fitness selection to deal with axis acceleration and jerk limits. For real-time operation, we establish a look-up table with the optimal corner speed and corner path models for use by a CNC controller. In the experiment, the YCM NXV560A vertical machining center was used to conduct a real machining test on a Taiwan contour, and the feasibility of the controller to generate the optimal corner strategy for various linear paths was verified.Tzyy-Chyang LuShyh-Leh ChenIEEEarticleBézier corner curveCNC machine toolcorner smoothingparticle swarm optimization (PSO)Electrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 152718-152727 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Bézier corner curve CNC machine tool corner smoothing particle swarm optimization (PSO) Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Bézier corner curve CNC machine tool corner smoothing particle swarm optimization (PSO) Electrical engineering. Electronics. Nuclear engineering TK1-9971 Tzyy-Chyang Lu Shyh-Leh Chen Real-Time Local Optimal Bézier Corner Smoothing for CNC Machine Tools
description	A straight line or G01 is the most common path in computer numerical control (CNC) contour machining. However, non-smooth corners introduce discontinuous movement along each axis during machining. The commonly used strategy is to redesign a corner into a smooth corner path. Therefore, optimal corner smoothing should simultaneously find an optimal corner path and a corner speed that satisfied the axis motion limits. To achieve this goal, we use particle swarm optimization (PSO) to find the optimal Bézier curve and the optimal corner speed, then convert the axis constraints into polynomial inequalities and use fitness selection to deal with axis acceleration and jerk limits. For real-time operation, we establish a look-up table with the optimal corner speed and corner path models for use by a CNC controller. In the experiment, the YCM NXV560A vertical machining center was used to conduct a real machining test on a Taiwan contour, and the feasibility of the controller to generate the optimal corner strategy for various linear paths was verified.
format	article
author	Tzyy-Chyang Lu Shyh-Leh Chen
author_facet	Tzyy-Chyang Lu Shyh-Leh Chen
author_sort	Tzyy-Chyang Lu
title	Real-Time Local Optimal Bézier Corner Smoothing for CNC Machine Tools
title_short	Real-Time Local Optimal Bézier Corner Smoothing for CNC Machine Tools
title_full	Real-Time Local Optimal Bézier Corner Smoothing for CNC Machine Tools
title_fullStr	Real-Time Local Optimal Bézier Corner Smoothing for CNC Machine Tools
title_full_unstemmed	Real-Time Local Optimal Bézier Corner Smoothing for CNC Machine Tools
title_sort	real-time local optimal bézier corner smoothing for cnc machine tools
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/dd1a31605b8a4581937d452eaef4ad9c
work_keys_str_mv	AT tzyychyanglu realtimelocaloptimalbx00e9ziercornersmoothingforcncmachinetools AT shyhlehchen realtimelocaloptimalbx00e9ziercornersmoothingforcncmachinetools
_version_	1718419868270723072

Real-Time Local Optimal B&#x00E9;zier Corner Smoothing for CNC Machine Tools

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