Flat polishing machine mirror surface processing technology of the discussion

       Flat polishing machine mirror processing technology is a set of modern machinery, optics, electronic computers, measurement and materials in one of the new comprehensive processing technology, has become an important symbol of the level of national scientific and technological development.

       With the successful development of a variety of new functional ceramic materials, these materials are widely used in a variety of high-performance electronic components, optics, information systems and other fields, the requirements of the components and parts of the machining accuracy is increasingly high, and some even require to achieve nanometer or higher machining accuracy and non-destructive surface processing quality. For polishing, the main purpose is to remove the tiny bumps and surface damage layer on the surface of the workpiece under the premise of maintaining a good grinding flatness, in order to obtain a mirror surface luminosity. Therefore, the entire workpiece surface needs to be fully polished. This is reflected in the speed, i.e. the relative speed of each point on the surface of the workpiece should be constant at all times. The workpiece is a rigid body that does not deform, and the polishing disk is an elastomer that deforms according to the shape of the workpiece processing surface. At this time, the thickness and shape changes of the abrasive particles and processing fluid between the two can be ignored, and it is considered that the workpiece is completely close to the polishing disk; when the size of the workpiece is larger than the radius of the polishing disk or the eccentricity distance is too large, the workpiece will be exposed to the polishing disk, and part of the surface can't always be in contact with the polishing disk; when the parallelism error of the workpiece material in the process of grinding or polishing is more than the permissible range, it is necessary to modify the parallelism of the workpiece.

　　In the mirror polishing process of the flat polishing machine, it can be assumed that the amount of removal of the workpiece mainly depends on the length of the grinding path, so the length of the grinding path on the surface of the workpiece can be more accurately controlled.