硬质合金、高速钢或其它难加工材料的成型磨削,采用普通砂轮是不经济的。特别在被磨的工件截形必须相同,而且公差要求严格的大批生产条件下更是如此。普通砂轮虽易快速成型,但磨损快,必须经常修整和检查,以控制工件质量,因此使总加工费用增加。金刚石或立方氮化硼(CBN)成型砂轮常能得到较好的经济效果。这种砂轮的优点是成型面十分耐磨,其缺点是价格高,修整工时很长,并且需要重修整和锐化砂轮等辅助设 Carbide, high-speed steel or other difficult to shape the grinding material, the use of ordinary grinding wheel is not economical. In particular, the workpiece to be ground must be the same truncation, and tolerances demanding a large number of production conditions even more so. Ordinary grinding wheel, although easy to rapid forming, but wear fast, often must be trimmed and checked to control the quality of the workpiece, thus increasing the total processing costs. Diamond or cubic boron nitride (CBN) molding wheel can often get better economic results. The advantages of this wheel is the molding surface is very wear-resistant, the disadvantage is the high price, long dressing time, and the need to re-sharpening and grinding and other auxiliary equipment