关键词: 增材制造, 螺旋路径, 自适应, B样条, 曲率

Abstract: To avoid the problems of sharp corners,path intersection and uneven spacing in the manufacturing path generated by traditional methods for additive manufacturing,an adaptive spiral path generation method was proposed.The initial control point of spiral curve was obtained based on the lofting method,and then the control points are adaptively inserted in the position of the spiral curve with a large curvature.The B-spline curve was constructed based on the adaptively inserted control points to generate a smooth and evenly spaced spiral path.Several simulation and experiment results showed the feasibility and effectiveness of the proposed method.The generated spiral path could not only improve the manufacturing speed and the efficiency for additive manufacture,but also improve the quality of the manufactured product by avoiding the problem of overfilling or under filling during the additive manufacturing process.

Key words: additive manufacturing, spiral path, adaptive, B-spline, curvature