2019 journal article
A Method of Generating Spiral Tool Path for Direct Three-Axis Computer Numerical Control Machining of Measured Cloud of Point
JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING, 19(4).
author keywords: three-axis CNC machining; cloud of point; radial curves; spiral tool path
TL;DR:
A new method to generate spiral tool paths for the direct three-axis CNC machining of the measured cloud of point using 3D radial curves inspired by the Archimedean spiral passing through the radial lines in a circle is presented.
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(Web of Science)
Source: Web Of Science
Added: February 3, 2020
Smooth continuous spiral tool paths are preferable for computer numerical control (CNC) machining due to their good kinematic and dynamic characteristics. This paper presents a new method to generate spiral tool paths for the direct three-axis CNC machining of the measured cloud of point. In the proposed method, inspired by the Archimedean spiral passing through the radial lines in a circle, 3D radial curves on the cloud of point are introduced, and how to construct the radial curves on the complex cloud of point is discussed in detail and then a practical and effective radial curve construction method of integrating boundary extraction, region triangulation, mesh mapping, and point projection is proposed. On the basis of the radial curves, the spiral tool path can be generated nicely by interpolating the radial curves using a spiral curve. Besides, the method of identifying and eliminating the overcuts and undercuts in the spiral tool path resulting from the interpolation error is also presented for good surface quality. Finally, several examples are given to validate the proposed method and to show its potential in practical applications when quality parametric models and mesh models are not available.