Head of polishing suitable for convex inner chamber of panel computer backplate

The utility model discloses a head of polishing suitable for convex inner chamber of panel computer backplate is by motor drive's a grinding shaft and the cingulum toe joint on the 2nd grinding shaft and area mill layer, a grinding shaft and the 2nd grinding shaft's axle center sets up at the slide bar both ends, and the slide bar middle part is equipped with first pivot, the lead screw that the lead screw that the upper end toe joint and a grinding shaft of first pivot are connected, lower extreme toe joint and the 2nd grinding shaft are connected, the motor drive pivot is passed through the lead screw and is driven a grinding shaft and the 2nd grinding shaft along slide bar slip. Through the cingulum that wraps up three grinding shaft, polish traditional level to change into and radially polish, through the interval that a grinding shaft and the 2nd grinding shaft were adjusted in first pivot, the third pivot is moved in the second pivot that links simultaneously for the cingulum is in stretched state all t