The utility model discloses a
polishing grinding head, which relates to the technical field of
metal surface treatment, solves the problems that a
grinding disc
grinding sheet is in linear contact with the surface of a workpiece to be processed, is only suitable for grinding and
polishing green bricks or stones with better
surface flatness, and cannot be used for effectively
polishing uneven surfaces, and comprises a grinding head motor, a transmission mechanism used for inputting power to the grinding head is fixed to a
power output shaft of the grinding head motor, a fixing
flange is fixed to the lower end of the transmission mechanism, a grinding head disc is installed on the lower surface of the fixing
flange, and four fixing screws in threaded connection with the grinding head disc are installed in the fixing
flange. An adjusting mechanism used for being flexibly connected with the grinding head penetrates through the interior of the grinding head disc. The spring is arranged in the mounting
pipe, the limiting block is pushed to move, the movable rod drives the fixing plate to move, it is guaranteed that the polishing piece on the grinding head body makes normal contact with the surface of a polished object, and effective polishing
machining can be conducted on uneven surfaces.