Grinding and polishing machine for hardware machining

The utility model discloses a grinding and polishing machine for hardware machining, and relates to the technical field of grinding and polishing machines for hardware machining, the grinding and polishing machine for hardware machining comprises a main part body, the top of the main part body is fixedly connected with a rotating disc mechanism, the rotating disc mechanism comprises a supporting frame, and the bottom of the interior of the supporting frame is fixedly connected with a limiting sleeve; a first rotating rod is rotationally connected to the interior of the limiting sleeve, and a first gear is fixedly connected to the outer wall of the first rotating rod. Through mutual cooperation and use of the supporting frame, the limiting sleeve, the first rotating rod, the first gear, a rotating disc, a second gear, a second rotating rod, a crank, a fixing block, a first air cylinder and a clamping plate, a user can conveniently conduct multi-angle adjustment grinding on hardware; and a user only needs to co