A morphing machining strategy for artificial bone

作者:Gan, Wen-feng; Fu, Jian-zhong*; Shen, Hong-yao; Lin, Zhi-wei
来源:Journal of Zhejiang University-Science A(Applied Physics & Engineering), 2014, 15(3): 157-171.
DOI:10.1631/jzus.A1300274

摘要

In this work, a novel morphing machining strategy (MMS) is proposed. In the method, the workpiece is progressively carved out from the stock. Pitfalls in conventional iso-height strategy, such as sharp edges and unevenly distributed left-over materials, are overcome. Moreover, to calculate different levels in the MMS, an energy-based morphing algorithm is proposed. Finally, the proposed strategy is employed in the machining of artificial bone represented by a T-spline surface. The excellent properties of T-spline, such as expressing complex shapes with a single surface, have been well adopted to artificial bone fabrication. Computer simulation and the actual machining of the middle finger bone show the feasibility of the proposed strategy.