Rib part adds gravity die metal magnetic end lining board

The utility model relates to a protection milling machine barrel body end cover is surperficial, reduces a rib part adds gravity die metal magnetic end lining board of its wearing and tearing, and shape approximate circle ring is fan -shaped, comprises shell (1), stereoplasm point (2), the magnetic path (3) of group and bonding agent, has two surfaces of installation face (6) and working face (7).Shell (1) uses the not metal material manufacturing of magnetic conduction, and the box that installation face (6) one side is the fan -shaped check (4) of a plurality of rings component appears, andthe polarity orientation that the (3) of the magnetic path of packing into in check (4) group, the (3) of magnetic path group pack check (4) into makes the round magnetic path that lies in on the same radius organize (3) polarity identical, and it is opposite that (3) polarity is organized to two ring adjacent magnetic paths. The sectorial check (8) of more shallow ring to shell (1)'s the check (4) reciprocal distribution