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Employing Generalized Cylindrical Helicoid Tube to Smoothly Blending Tubes Whose Axes are Non-Coplanar

Given two tubes with non-coplanar axes whose sections are circle, we acquire that axes of the tubes can be smoothly blent by cylindrical helix. In this situation, the paper proposes a new method to build the blending surface by generalized cylindrical helicoid tube. Meantime, we obtain smoothly blending parameter surface.