| 摘要 |
PURPOSE:To make the dressing of a grinding wheel attainable without interrupting grinding operation, by mixing particled hard abrasives such as silicon carbide system grains, glass beads, etc., periodically into a high pressure coolant solution, while reproducing a cutting edge by means of a liquid honing effect. CONSTITUTION:During grinding a work 2, if loading on a grinding surface 1a of a grinding wheel 1 happens, an on-off valve 15 is opened and hard abrasives 17 inside a hopper 16 is mixed in a coolant solution in a feed pipe 11. So, a high pressure coolant solution inclusive of the particled hard abrasive 17 is jettingly sprayed to the grinding surface 1a through a nozzle 10 whereby a blunted cutting edge surface in grains is dressed by means of a liquid honing effect, thus it is reproduced into a sharp edge surface. When proper dressing takes place upon continuation of this coolant solution jetting operation for the specified time long, the on-off valve 15 is closed and grinding operation by ordinary coolant solution feed continues to do as usual. Thus, grinding efficiency and service life in the grinding wheel both are improvable. |
