不同因素对金刚石柔性磨轮磨损的影响研究

摘要

金刚石柔性磨轮是金刚石砂带的一个衍生产品，主要用于宝石和玻璃加工。通过对金刚石柔性磨轮进行磨削实验，分析了法向压力、磨轮转速、磨料浓度、磨料粒度及加工方式对磨轮磨损的影响。结果表明：增加磨削过程中法向压力，磨轮磨粒脱落数目和磨耗比都逐渐增大；磨轮转速对磨粒脱落数目无明显影响，磨耗比逐渐增加；当磨料浓度增加到13%时，磨粒脱落数目仅增加2颗，磨削玻璃磨耗比达到最大为90；磨料粒度越粗，单位面积脱落的金刚石越少，磨耗比越大；磨轮树脂结合剂耐热性差，在磨削过程中应加水进行冷却。%Diamond soft grinding wheel is a derivative product of diamond abrasive belt, mainly used for machining of gemstone and glass.The influence of normal pressure,ro-tate speed of grinding wheel,concentration and particle size of abrasive and processing method on the abrasion of the grinding wheel has been analyzed through grinding experi-ment to the diamond soft grinding wheel.Result shows that both of the quantity of abra-sive particles that fall off the grinding wheel and the abrasive ratio increase as the normal pressure increases;rotate speed of grinding wheel has little influence on the quantity of abrasive particles that fall off the grinding wheel while the abrasive ratio increases gradu-ally;the quantity of abrasive particles that fall off the grinding wheel is just added up by 2 when concentration of abrasive increases to 13%,and the abrasive ratio for glass gring-ding reach the maximum value of 90;the coarser the grain size of the abrasive particles, the greater the abrasive ratio,with less diamond falls off in unit area;the resin binder for the grinding wheel should be chilled by water in light of its poor heat resistance.