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在磨削加工过程中,砂轮表面的切削刃分布情况与磨削工件表面特征直接相关,而砂轮表面特征又与修整过程相联系,为研究单点金刚石笔的磨损和修整参数对磨削工件表面的影响,利用数值模拟和试验测量的方法揭示了砂轮修整及磨削过程,在修整重叠率为3时,讨论了修整参数与工件表面形貌特征的关系,并获得金刚石笔的磨损对磨削表面的影响.结果表明:金刚石笔初期修整阶段,磨削工件表面的峰谷分布明显具有规律性,其0.12 mm的变化周期完全为修整导程的复映;金刚石笔磨损后,工件截面曲线特征的规律性减弱,测量的表面粗糙度由0.52μm减小到0.38μm,最后导致工件表面烧伤;若调整修整导程保持原重叠率,则表面粗糙度增大为0.81μm.
In the process of grinding, the distribution of the cutting edge on the surface of the grinding wheel is directly related to the surface characteristics of the workpiece, while the surface characteristics of the grinding wheel are related to the dressing process. In order to study the wear and dressing parameters of single-point diamond pen, The dressing and grinding process of grinding wheel are revealed by numerical simulation and experimental measurement. When the trimming overlap rate is 3, the relationship between the dressing parameters and the surface features of the workpiece is discussed, and the wear and tear of the diamond pen on grinding The results show that the peak-valley distribution of the workpiece surface is obviously regular during the initial stage of diamond pen trimming, and the change period of 0.12 mm is the reflection of the trimming lead. After the wear of the diamond pen, Of the regularity weakened, the measured surface roughness decreased from 0.52μm to 0.38μm, and finally lead to burn the workpiece surface; if the adjustment of the original guide to maintain the overlap rate, the surface roughness increased to 0.81μm.