The use of single-particle diamond (or finely divided diamond diamond diamond trim block) as a tool turning wheel is the most common dressing method. Diamond tools mounted on the turret are usually inclined in the vertical and horizontal direction of about 5 ° ~ 15 °; diamond and grinding wheel contact point should be lower than the wheel axis 0.5 ~ 2mm, trimmed diamond and uniform low speed feed mobile. The smaller the surface roughness after grinding, the feed rate should be lower, if you want to achieve Ra0.16 ~ 0.04? M surface roughness, trim feed rate should be less than 50mm / min. The total amount of dressing is generally about 0.1mm, reciprocating multiple times. Rough repair depth of each 0.01 ~ 0.03mm, refinement is less than 0.01mm.