Polishing machine material guiding device capable of achieving automatic feeding

The invention relates to the field of hub machining, in particular to a polishing machine material guiding device capable of automatically feeding, which comprises a supporting clamping plate for supporting, and profile supporting columns for supporting are arranged at four corners of the lower end surface of the supporting clamping plate. According to the hub polishing machine, by arranging the material guiding devices, when automatic feeding polishing and discharging are conducted on hubs, a gear motor can circularly drive the guiding devices to intermittently rotate by 90 degrees through a driving bevel gear, and the guiding devices can circularly drive the four sets of material guiding devices to intermittently rotate; meanwhile, transmission bevel gears in the material guiding device can be matched with meshing of bevel racks when circularly rotating, and then the two sets of transmission bevel gears are opened and closed through guide gears, so that a spring push plate can automatically discharge the hu