在金属切削过程中,有时可以看到,在工件的被加工表面上,出现些拉毛或一道道的划痕,这时如果仔细看看刀具的刀尖附近,有时会发现粘结着一小块金属(图1)。好像刀尖上长的瘤子一样,所以就把它称做积屑瘤或叫做刀瘤。就是这些刀瘤破坏了工件的加工表面光洁度。积屑瘤是怎样产生和消失的呢?它对工件加工有什么 In the metal cutting process, sometimes you can see, in the workpiece surface to be machined, there are some rags or a trace of scratches, then if you look closely at the tool near the tip, sometimes you will find a small piece of adhesive Metal (Figure 1). It looks like a long knob on the tip, so it’s called a build-up or a tumor. It is these knives undermine the machined surface finish of the part. How does BUE come into existence and disappear? What does it do with the workpiece?