基于车铣技术的刀具磨损和破损分析

在车铣加工中心上，分别采用硬质合金和TiN涂层硬质合金刀片，对铝合金和不锈钢工件进行了车铣加工的刀具磨损试验，研究分析了车铣刀具的磨损和破损特征。研究表明，车铣铝合金的刀具磨损机理主要以刀具表层材料的黏结磨损为主，而车铣不锈钢的刀具磨损机理主要以刀具表层材料的疲劳-剥落磨损为主。车铣不锈钢时，刀具的损坏形式常常以微崩刃、前刀面的剥落和碎断等破损形态为主。

Research on Tool Wear and Fracture Based on Turn-milling Technology

Separately adopted carbide and TiN coated carbide to machine aluminum alloy and stainless steel, a series of turn--milling tool wear experiments had been done on a turn--milling machining center to analyze the tool wear and fracture. It is proved that the tool wear mechanism of turn--milling aluminum alloy is felt wear, and that of turn--milling stainless steel is fatigue--exfoliative wear. According to the research results it is also proved that the form of tool fracture in machining stainless steel by turn--milling is frequently cutter edge tiny collapse, rake material flake away and broken to pieces.