1. The production accuracy of the main parts needs to be improved. 

2. The accuracy of the whole machine installation is improved. 

3. To improve the accuracy of the surface grinder, the machine structure also needs to be improved. The rotation accuracy, stiffness and vibration resistance of the spindle and spindle assembly of the advanced grinding wheel holder, such as the integral multi-oil wedge dynamic pressure plain bearing or static bearing; Motor and other careful dynamic balance, the use of jointless flat belt drive; Improve the micro feed accuracy, avoid crawling, improve the rigidity of the transverse feed transmission chain, drive directly with the screw nut without gears, static guide rail or closed rolling guide rail with good vibration resistance; Improve the rigidity of the machine tool and reduce the vibration, choose double-wall bed, add anti-vibration pad under the vibration source, etc. Reduce heating and thermal deformation, heat source away from the machine, with preheater, condenser, machine placed in the constant temperature workshop; Equipped with high precision automatic measuring instrument; With a coolant purification device with high purification capacity, the coolant should be cleaned