Centerless grinding machine grinding wheel selection and adjustment
Direct impact on the shape of the grinding wheel grinding quality, production efficiency and durability. General requirements to adapt to the shape of the grinding wheel feed, pre-grinding, grinding, light grinding, strippers and other processes.
Figure 2.5-10 shows throughout France (through grinding) Grinding grinding wheel. When the cutting depth is greater than, L1, L2 are long, angle y1, yr2 bigger; when grinding depth hours, L3 longer, angle y1, y2 smaller.
Figure 2.5-11 shows the width of the grinding wheel, the more feed zone L1 10 ~ 15mm; L2 is pre-ground area, the amount determined by the grinding. L3 is a grinding mill or off zone, coarse grinding of about 20mm, fine grinding of about 50mm. L4 is back material area, about 5 ~ 10mm. A grinding allowance equal to the maximum
△ 1 for the feed, about 0.5mm, △ 2 to the discharge port, about 0.2mm.
Under normal circumstances, the grinding zone in the grinding sparks mainly, when the workpiece into the grinding and light grinding zone, the spark should be gradually reduced, the outlet, should no sparks.
Grinding wheel and guide wheel combination features usually considered. Grinding wheel and guide wheel diameter and width of the maximum determined by the machine tool. The width of the grinding wheel should be used throughout the mill, the grinding wheel and guide wheel identical; when using cut grinding, generally face the same demons seeking work, idler pulley narrower, but not less than 25mm.
The abrasive grinding wheel, grain size, hardness, binders select the same general cylindrical grinding. But generally cylindrical grinding grinding wheel than the average slightly harder; centerless grinding through the slightly softer than the cut; much grinding wheel grinding, small diameter grinding wheel slightly harder, idler pulley slightly harder than the grinding wheel slightly finer granularity .