Global smoothing for five-axis linear paths based on an adaptive NURBS interpolation algorithm

The five-axis tool path generated by CAM software usually consists of a series of linear paths. The tangent direction at the corner of the adjacent line segment will suddenly change, and the curvature is also discontinuous, which will cause vibration and shock during the machining process. Thus, a g...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2021-06, Vol.114 (7-8), p.2407-2420
Main Authors: Wang, Xiaodong, Liu, Bin, Mei, Xuesong, Hou, Dongxiang, Li, Qin, Sun, Zheng
Format: Article
Language:English
Subjects:
Adaptive algorithms
Algorithms
Axis movements
Burrs
CAE) and Design
Computer-Aided Engineering (CAD
Engineering
Error reduction
Five axis
Industrial and Production Engineering
Interpolation
Laser beam cutting
Machining
Mathematical analysis
Matrix methods
Mechanical Engineering
Media Management
Original Article
Smoothing
Surface properties
Vibration
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Description
Summary:The five-axis tool path generated by CAM software usually consists of a series of linear paths. The tangent direction at the corner of the adjacent line segment will suddenly change, and the curvature is also discontinuous, which will cause vibration and shock during the machining process. Thus, a global corner smoothing algorithm based on cubic NURBS interpolation is proposed to smooth the linear paths in this paper, so as to achieve G2 continuous for five-axis linear paths. The algorithm proposed does not require matrix operations to solve the control points, and it can also reduce the number of control points while satisfying the interpolation error. The algorithm is then used to generate smooth NURBS path for ceramic core burrs and blockage repair. The simulation and experiment show that the algorithm proposed can satisfy the error constraints, reduce the vibration of the motion axis, and improve the surface quality of laser cutting.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-021-07013-6