NURBS interpolation algorithm of self-adjusting feedrate equation based on curve length

被引：0
|
作者：
Wu Y. [1 ]
Wang P. [1 ]
机构：
[1] School of Automation Science & Engineering, South China University of Technology, Guangzhou
来源：
Jisuanji Jicheng Zhizao Xitong/Computer Integrated Manufacturing Systems, CIMS | 2019年 / 25卷 / 09期
关键词：
Adams-Moulton method; Bisection method; Curve machining; Feedrate plan; Interpolation algorithm; Non-uniform rational B-spline;
D O I：
10.13196/j.cims.2019.09.013
中图分类号：
学科分类号：
摘要：
To solve the problem of complex feedrate planning, low efficiency and severe machine tremor in NURBS curve machining process, a high efficiently NURBS interpolation algorithm was proposed. During the pre-processing stage, the interpolation parameters and error feedrate of NURBS curve were calculated, the acceleration and deceleration regions was analyzed according to the error feedrate curve, and the cubic polynomial equation of feedrate was automatically adjusted according to the length of ACC/DEC interval. Based on Adams-Moulton method, the real-time interpolation process could calculate the initial parameters, and optimize the parameters with bisection method. The feedrate fluctuation in the interpolation process was controlled to the machining precision range to reduce the machine vibration. The feasibility of the proposed algorithm was verified by Matlab simulation, and the simulation result showed that the algorithm could improve the machining efficiency and accuracy in the field of machining complex curves and surfaces. © 2019, Editorial Department of CIMS. All right reserved.
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页码：2256 / 2264
页数：8
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