The invention relates to a
machining device, in particular to a special-shaped steel
pipe machining device for municipal building materials. The invention provides the special-shaped steel
pipe machining device for the municipal building materials, which has the advantages that automatic
punching, automatic clearing and automatic paint brushing can be realized. The special-shaped steel
pipe machining device for the municipal building materials comprises a supporting frame,
punching cutters, a conveying mechanism and a downward pressing mechanism, the downward pressing mechanism is arranged in the middle of the top side of the supporting frame, the three
punching cutters are arranged on the downward pressing mechanism, and the conveying mechanism is arranged on the supporting frame. According to the special-shaped steel pipe machining device for the municipal building materials, the conveying mechanism and the downward pressing mechanism are arranged, so that people make the conveying mechanism operate intermittently, special-shaped steel pipes move rightwards intermittently, then the downward pressing mechanism conducts intermittent punching on the special-shaped steel pipes, and therefore the purpose of automatic punching is achieved; and a clearing mechanism is arranged, the downward pressing mechanism operates to drive the clearing mechanism to operate, so that the clearing mechanism clears chippings at the punching positions of the special-shaped steel pipes, and therefore the purpose of automatically clearing the chippings is achieved.