羟磷灰石（HAP）铣削加工实验研究

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Hydroxyapatite （HAP） is a widely used bio-ceramic in the fields of orthopedics and dentistry. The machinability of solid form of HAP in end milling operations was studied. Machining effects of machining conditions such as cutting speed, feed and cutting depth on surface roughness and tool wear were focused on. Milling experiments analyses show that the surface roughness is bet- ter with high cutting speed and cutting depth, which are same as those of metal material. Furthermore, the brittle assessment of HAP is found in the machined surface. And the tool wear is up to stable state in relatively short time, especially in high cutting speed.HAP是一种已在牙修复以及骨修复领域得到广泛应用的生物陶瓷。对该材料进行铣削实验研究，主要考察切削速度、进给量和切削深度对表面粗糙度和刀具耗损的影响。结果表明：随切削速度和切削深度的增加，表面粗糙度会相应减小；而进给速度的增加则会增大粗糙度，基本和塑性材料加工规律类似，但是加工面更多地显现出脆性材料的去除特性；刀具在第一次加工中就达到磨损稳定状态，在切速较高的时候尤为明显。