Metallographic grinder is made of painted or embedded abrasive tool grinding workpiece surface grinding equipment. The main types of metallographic grinder are disc type grinding machine, the rotating shaft grinding mill and all kinds of special machine. Among them, the special grinding machine according to different, by grinding the workpiece can be sub-center hole grinding machine, ball grinding machines and gear grinding machine, etc.
Disc type grinding machine of single plate and double disk, double disc grinding machine used in the most common. In double disc grinding machine, multiple artifacts into at the same time is located in the upper and lower clamping frame between grinding disc, clamping and work-piece driven by eccentric or planet mechanism plane parallel motion.
Shaft mill by positive and reverse rotation of the spindle drive the workpiece or tool grinding (adjustable ring or grinding rods), structure is simple, is used for grinding inner and outer cylinder.
To say the metallographic grinder in the workpiece precision plane type, inner and outer cylinder, thread surface and other surface grinding played a large role.