Cold-drawing machining equipment and machining method thereof

The invention belongs to the technical field of machining and provides cold-drawing machining equipment and a machining method thereof. The cold-drawing machining equipment comprises at least one dummy ingot device and at least one withdrawal and straightening machine, wherein each dummy ingot device comprises a dummy bar and a dummy bar head which is mounted below the dummy bar in a removable manner; in an initial machining position of the cold-drawing machining equipment, the dummy bar heads penetrate a circulation channel of a crystallizer and are inserted into an alloy solution of a holding furnace to pull alloy parts upwards from the inside of the holding furnace; each withdrawal and straightening machine comprises a positioning device, an impact hammer and tongs; the positioning devices are used for clamping the upper parts of the alloy parts when the alloy parts are pulled upwards by the dummy ingot devices to reach a first preset position; the impact hammers are used for knocking the dummy ingot devic