可转位刀片的几何参数直接地影响到它的断屑效果、切削力的大小、加工表面质量以及刀片的使用寿命。在寻求更为合理的几何参数方面国外进行了许多研究工作,出现了很多新型刀片。如瑞典曲P+刀片、日本的Bubbly—P 型刀片等;为了进一步提高硬质合金可转位刀片的寿命,美国、瑞典等硬质合金工业较为先进的国家都开展了对涂层的研究。 The geometry of indexable inserts directly affects its chip breaking performance, the amount of cutting force, the quality of the machined surface, and the useful life of the insert. In the search for more reasonable geometrical parameters of a lot of research work abroad, there have been many new blade. Such as Swedish song P + blade, Japan’s Bubbly-P-type blade; In order to further improve the life of cemented carbide indexable inserts, the United States, Sweden and other advanced carbide industries have carried out on the coating research.