中文摘要：

采用TiA lN涂层硬质合金微径铣刀在微小型机床上对铅黄铜（HPb63-3）工件进行了微细铣削加工试验研究,全面分析了微刀具的磨损、破损形态及磨损失效机理.结果表明：在微细铣削加工条件下,微径铣刀主要失效与磨损区发生在刀尖部位,刀具的磨损与破损形态呈现显著的尺度效应.微细铣削铅黄铜材料时,微刀具的主要失效形式表现为涂层剥落与刀尖破损;主要磨损机理为黏着磨损和磨粒磨损等损伤机制.刀具与工件之间存在着扩散作用,但并不是引起刀具磨损的主要原因.

英文摘要：

Micro-milling experiments of HPb63-3 lead brass were conducted on micro-machine by using TiAlN coated tungsten carbide micro-diameter cutter. Wear and breakage morphologies of micro-tool were analyzed. Wear and breakage of micro-diameter cutter mainly occurred in tool nose and the wear and breakage morphologies shown distinct size effect. The main failure modes of micro-tool were coating peeling and tool nose breakage. Adhesive and abrasive wear were typical damage mechanisms of micro-tool. Diffusing effect occurred between tool and workpiece, which did not contribute to the tool wear obviously.