The basic principle of miniature bearing centerless external cylindrical grinding

Miniature bearing mixed grinding method is also called piecewise grinding method. It is cut into the comprehensive application method and longitudinal grinding method, namely, use first cut method will work segments coarse grinding, 0. 03 ~ 0. 4 mm allowance, finally use vertical grinding fine grinding to size. This grinding method using the method of the cut both the advantages of high production efficiency, and has the advantages of longitudinal grinding machining precision is high. Step grinding, between adjacent two segments should be 5 ~ 10 mm of overlap. This kind of grinding method suitable for the grinding allowance and better rigidity workpiece, and the length of the workpiece will be appropriate. Considering the grinding efficiency, wide wheel, should be adopted to reduce the section number. When the length of the machined surface is about grinding wheel wide degree of 2 ~ 3 times as the best state. 5. The basic principle of 2 centerless external cylindrical grinding 5. 2. 1 the method of centerless external cylindrical grinding centerless external cylindrical grinding on the surface of the workpiece processed positioning itself, not the position error correction. Precision can reach IT6 ~ T, roundness error is 0. 005 m, Ra is less than 1. 下午6点。 Productivity is high, it is mainly used for small batch production. Centerless grinding is outside the centerless grinding machine on a cylindrical grinding. Centerless external cylindrical grinding, the workpiece indefinite center freely between the grinding wheel and the roller and the plate and the roller bearing, the workpiece is grinding is the locating datum plane, cylindrical surface grinding of the function of grinding wheel, grinding wheel according to the driving role of grinding wheel according to the guide wheel. Roller is made from rubber bond centerless grinding, cylindrical grinding wheel at 75 times greater than the wheel peripheral speed rotation, due to the friction force between the workpiece and the idler pulley is greater than the friction between the workpiece and grinding wheel so artifacts are rotating wheel drive and with it into the opposite direction; While the grinding wheel for grinding workpiece. The centerless external cylindrical grinding methods are mainly through the method and the cut method.