文中用粒度和结合剂各不相同的两组八片砂轮,对四种硬质合金试样进行了切入磨削试验,以研究磨料粒度对砂轮磨损和切除率的影响。结果表明,在特殊切入磨削条件下,细粒度优于粗粒度,能以增大切除锋利性和减少主轴功率要求为高效磨削带来效益。 In this paper, four kinds of cemented carbide specimens were cut into the grinding test with two sets of eight grinding wheels with different particle sizes and binding agents to study the influence of the abrasive grain size on the wear and removal rate of the grinding wheel. The results show that the fine grain size is better than the coarse grain size under the special cutting and grinding conditions, which can bring benefit for high efficiency grinding with increasing cutting sharpness and reducing spindle power requirements.