The 8th Pacific Rim International Conference on Water Jet Technology
巻, 号, ページ
Vol. 8
pp. 308-315
出版年月
2006年10月
出版者
和文:
英文:
会議名称
和文:
英文:
The 8th Pacific Rim International Conference on Water Jet Technology
開催地
和文:
英文:
Qingdao, China
アブストラクト
This paper introduces a novel ultra-precision finishing method for an artificial knee joint by means of abrasive waterjet. The proposed method is as follows. Ultra fine abrasive particles are mixed in water of a machining chamber in which a workpiece is positioned under a spindle. High pressured waterjet is injected under the water to the workpiece in a tangential manner at a machining point. Abrasive particles gather around the machining point. The proposed method can realize utilization of ultra fine particles whose diameter is 1 m which is very difficult in a conventional manner. Furthermore, it is advantageous from the viewpoints of nozzle wear and abrasive particle reuse as well as process automation. Then, the proposed finishing method is applied to an artificial knee joint with free form shape. A nozzle motion and the position of a workpiece are planed based on CAD data of the workpiece. By applying the finishing method to finishing for an artificial knee joint, an artificial knee joint whose surface roughness is 8.5 nmRa was obtained.
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