聚晶金刚石(PCD)刀具和立方氮化硼(CBN)刀具最适用于车削或精加工,例如对铝和塑料的加工。用PCD和CBN刀具加工,可得到0.025微米的加工精度,而且其耐用度高于普通刀具。这类刀具未能得到普遍采用,多是因用户感到自行重磨困难。如拿到外地修磨,不但费用大(60美元/把),周转期长(三周),而且加大了刀具的备用量。要做好修磨工作需要有合适的设备,而且要掌握其刃磨技术。聚晶刀具是在高温、高压下将晶体复合物熔 Polycrystalline diamond (PCD) tools and cubic boron nitride (CBN) tools are best suited for turning or finishing applications such as aluminum and plastic processing. Machining with PCD and CBN tools yields machining accuracy of 0.025 microns and is more durable than conventional tools. Such tools have not been widely used, mostly due to the user feel hard to re-grinding. If you get the grinding outside the field, not only expensive (60 US dollars /), long turnover period (three weeks), but also increased the amount of spare tool. To do the grinding work need to have the right equipment, but also to master its grinding technology. Polycrystalline cutting tool is in the high temperature, high pressure under the crystal complex melt