1 Rough Grinding
Shapes of Rough Grinding Ball: Concave grinding ball,Convex grinding ball.The selection of the first Abrasive grain size depends on the arc height of the Machining workpiece. The choice of the second and third abrasive grain sizes is reduced by 1 to 2 grain sizes in sequence than the first abrasive grain size. After rough grinding, the surface roughness is 1.6 um. Check centration and thickness tolerance at any time during rough grinding.