An analytical and optimal corner smoothing method for CNC machine tools along linear segments

被引：0
|
作者：
Li, Bo [1 ]
Wang, Taiyong [1 ]
Wang, Peng [1 ]
机构：
[1] Tianjin Univ, Sch Mech Engn, Tianjin 300350, Peoples R China
来源：
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2022年 / 36卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Cornering smoothing; Analytical and optimal curvature; Feedrate scheduling; Kinematic limitation; TRANSITION ALGORITHM; NURBS INTERPOLATOR; PATH; SPLINES; SCHEME;
D O I：
10.1007/s12206-022-0332-2
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
To solve the problems caused by the discontinuity of linear segments in computer numerical controlled (CNC) machine tools, a curvature optimal corner smoothing method is proposed for three-axis machine tool in this paper. The proposed corner smoothing scheme fits a circumscribed quartic B-spline to smooth adjacent linear segments with the analytical corner error, which generates smaller analytical curvature extreme and faster transition feedrate than other existed corner smoothing methods. Besides, a hybrid interpolation method is applied to interpolate the linear and parametric tool paths with jerk-limited feedrate profile under kinematic limitations. Simulation and experiment are conducted to demonstrate the advantages of the proposed algorithm in machining time, kinematic performance and error control.
引用
收藏
页码：1959 / 1973
页数：15
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