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CLC number: TP391.73; TG547

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2014-02-20

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Journal of Zhejiang University SCIENCE A 2014 Vol.15 No.3 P.157-171

http://doi.org/10.1631/jzus.A1300274


A morphing machining strategy for artificial bone*


Author(s):  Wen-feng Gan, Jian-zhong Fu, Hong-yao Shen, Zhi-wei Lin

Affiliation(s):  . State Key Laboratory of Fluid Power Transmission and Control, Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   fjz@zju.edu.cn

Key Words:  Morphing machining strategy (MMS), Energy-based morphing, Tool path generation, T-spline surface, Artificial bone


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Wen-feng Gan, Jian-zhong Fu, Hong-yao Shen, Zhi-wei Lin. A morphing machining strategy for artificial bone[J]. Journal of Zhejiang University Science A, 2014, 15(3): 157-171.

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DOI - 10.1631/jzus.A1300274


Abstract: 
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.

一种基于曲面变形的人工骨骼渐进式加工方法

研究目的:研究人工骨骼等细长工件的无弯折加工方法。
创新要点:1.提出了一种基于曲面变形的渐进式加工方法,该方法保证加工余量在全曲面均匀分布,防止工件弯折;2.利用能量最小化实现T样条曲面的渐进变形;3.将该方法应用于以T样条曲面表示的人工指骨加工中。
研究方法:1.算法总体分为生成多层变形曲面和层内刀具路径规划两部分(见图5);2.对T样条曲面采用基于能量最小化的变形方法,以加工切深作为变形约束条件,生成多层变形曲面作为每刀的加工目标形状(见图10);3.每层变形曲面内按限残高标准生成刀具路径(见图12)。
重要结论:采用该加工方法可以提高细长形工件的加工质量,保证加工后形状误差不超限。

关键词:渐进式加工;能量最小化曲面变形;T样条曲面;人工骨骼

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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Open peer comments: Debate/Discuss/Question/Opinion

<1>

1@11<12@12.df>

2014-03-28 15:15:36

it is a good paper,recommend!!

amisan@12<12@12.df>

2014-03-28 14:53:20

In this work, a novel morphing machining strategy (MMS) is proposed. It is a good paper.

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