Copper pipe cutting device special for metal product machining and provided with fixing structure

The special copper pipe cutting device with the fixing structure for metal product machining comprises a supporting column and a top plate arranged on the top of the supporting column, a transmission assembly is further installed on the top of the top plate, and a machining table is arranged on the top end face of the top plate. A plurality of placing grooves with different inner diameters are formed in the top end face of the machining table, a fixing plate is further fixed to the top end face of the top plate, the fixing plate is located between the machining table and the transmission assembly, a stud penetrating through the fixing plate is fixed to the end face of the machining table, and the end, located outside the fixing plate, of the stud is sleeved with a nut. The surface of the stud is further sleeved with a spring, and the two ends of the spring abut against the machining table and the fixing plate correspondingly. And through the designed machining table, copper pipes with different diameters can