Surface treatment device for sheet metal part machining

The surface treatment device for metal plate part machining comprises a device body and a hand cranking device, a movable shaft penetrates through an inner bearing of the device body, the right side of the movable shaft is fixedly connected with the hand cranking device, the outer side of the movable shaft is movably sleeved with a movable lantern ring, and the lower end of the movable lantern ring is fixedly connected with a limiting lantern ring. The limiting lantern ring is movably arranged on the outer side of the limiting shaft in a sleeving mode, the limiting shaft is fixedly installed in the device body, a connecting rod is fixedly installed at the upper end of the movable lantern ring, a limiting block is fixedly arranged on the edge side of the connecting rod, the limiting block is connected with a ball through an installing groove, and a positioning groove is fixedly formed in the surface of the positioning clamp. According to the surface treatment device for metal plate partmachining, positioning o