Bearing grinding parameter adjustment of electromagnetic centerless jig

Magnetic force adjustment in electromagnetic centerless jig, the size of magnetic force is too large, the workpiece machining accuracy, easy to make the surface of the workpiece positioning cut or burned, magnetic force is too small, weak due to the positioning surface contact, in under the action of cutting force, easy generation instantaneous pause, make the grinding surface burn. For magnetic selection is by magnetic is big when the coarse grinding, fine grinding magnetic small; The artifact's big and heavy, magnetic is big; Artifacts are small and thin, magnetic smaller ( 2) The adjustment of the eccentric quadrant outside circle position within the circle, the eccentricity of the reasonable quadrant in the first quadrant. Orientation of outside circle circle within external cylindrical grinding and grinding cylindrical, reasonable eccentric quadrant in the fourth quadrant. Improper bearing position adjustment, can make the workpiece center of the eccentric quadrant wrong, will cause the workpiece positioning instability, or even flew out of the fixture, lead to accidents. ( 3) Eccentricity e adjusted as shown in figure 1. 20, deviate from the rotary center of eccentricity is refers to the actual workpiece spindle center distance, is the core safeguarding the smooth progress of the grinding parameters. Reasonable value generally in 0. 2 ~ - 0. 45 mm. A great work or coarse grinding of great value, small workpiece or fine grinding and fine grinding of little value. Eccentricity is too big, on the surface of the workpiece and its supporting increase friction, easily lead to the workpiece surface and bearing severe wear of table face; Eccentricity is too small, and can make the grinding is not stable.