Polishing and grinding device for machining front and rear cover plates of computer

The utility model relates to the technical field of grinding devices, and discloses a polishing and grinding device for computer front and rear cover plate machining, which comprises a shell, electric telescopic rods are fixedly connected to the two sides of the inner wall of the upper end of the shell, a supporting plate is fixedly connected to the lower ends of the two electric telescopic rods together, and a grinding device is fixedly connected to the lower end of the supporting plate. And a fixing mechanism is arranged at the lower end of the interior of the shell, can fix the cover plate and comprises a limiting rod. According to the scheme, the computer cover plate needing to be machined is placed on the inner wall of the lower end of the shell, at the moment, acting force is applied to the limiting rods through the weight of the computer cover plate, the limiting rods move downwards, the limiting rods without acting force can fix the four faces of the cover plate, fixing is more convenient in the mode,