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利用脉冲光纤激光对粗粒度青铜金刚石砂轮进行切向整形与径向修锐,并用修整后的砂轮磨削硬质合金工件,对不同磨削阶段的砂轮磨损形式和磨削比、工件表面粗糙度进行研究。结果表明:经激光整形后,砂轮圆跳动和平行度误差分别由83.1、324.6μm下降至6.8、3.8μm;与用碳化硅砂轮修整相比,经激光修整后砂轮表面磨粒的脱落更少、等高性更好、出刃高度更合适;当累计磨削深度达到10、20、30 mm时,砂轮磨损形式为磨粒磨耗和脱落磨损、以磨粒磨耗磨损为主并伴有磨粒脱落和结合剂磨耗磨损、磨粒脱落和磨耗以及结合剂磨耗磨损,砂轮磨削比约为205.4、405.1、96.0,工件表面粗糙度为0.314、0.337、0.454μm。
Tangential shaping and radial sharpening of coarse-grained bronze diamond grinding wheel were carried out by pulsed fiber laser. The worn grinding wheel was used to grind cemented carbide workpiece. The wear form and grinding ratio of grinding wheel at different grinding stages, surface roughness research. The results show that after the laser shaping, the errors of circularity and parallelism of the grinding wheel decrease from 83.1 and 324.6μm to 6.8 and 3.8μm, respectively. Compared with the dressing with the silicon carbide grinding wheel, the abrasion of the grinding wheel surface after the laser dressing is less, When the accumulated depth of cut reaches 10, 20, 30 mm, the wear pattern of grinding wheel is abrasive wear and shedding wear, which is mainly abrasive wear and abrasion and abrasive wear off The bonding agent wear and tear, abrasive off and wear and abrasion and bonding agent wear and tear, grinding wheel grinding ratio of about 205.4,405.1,96.0, the workpiece surface roughness of 0.314,0.337,0.454μm.