Abstract
This paper studies representation of rigid combination of a directed line and a reference point on it (here referred to as a “point-line”) using dual quaternions. The geometric problem of rational ruled surface design is viewed as the kinematic problem of rational point-line motion design. By using the screw theory in kinematics, mappings from the spaces of lines and point-lines in Euclidean three-dimensional space into the hyperplanes in dual quaternion space are constructed, respectively. The problem of rational point-line motion design is then converted to that of projective Bézier or B-spline image curve design in hyperplane of dual quaternions. This kinematic method can unify the geometric design of ruled surfaces and tool path generation for five-axis numerical control (NC) machining.
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Zhang, X., Zhu, L., Ding, H. et al. Kinematic generation of ruled surface based on rational motion of point-line. Sci. China Technol. Sci. 55, 62–71 (2012). https://doi.org/10.1007/s11431-011-4609-4
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DOI: https://doi.org/10.1007/s11431-011-4609-4