The utility model discloses a planer type milling
machine guide rail mechanism, which belongs to the field of planer type milling machines, and comprises a guide rail, a driving connecting seat and a base, the guide rail is fixedly connected inside the base, the driving connecting seat is slidably connected to the surface of the guide rail, and one end of the driving connecting seat is fixedly connected with a
scrap collecting mechanism. One end of the
scrap collecting mechanism is movably connected with a centralizing mechanism, the centralizing mechanism is located under the driving connecting seat, a releasing groove is formed in the inner side of the end, close to the
scrap collecting mechanism, of the base, a sliding groove is formed in the inner side of the base and communicates with the releasing groove, and the side, close to the sliding groove, of the releasing groove is in an arc shape; a releasing hole is formed in the side, close to the releasing groove, of the bottom end of the interior of the base, chippings generated during
machining can be conveniently adsorbed, and the situation that the chippings fall to the connecting position of a guide rail and a driving connecting base, consequently, the guide rail is abraded or the chippings enter driving equipment, consequently, equipment failures are caused, and the service life of the equipment is affected is prevented.