Double-die drawing die for copper pipe

• Main Authors: HU XUESHENG, YAO GUANGZHI, TONG JUN, XIE FUSHENG, QU LEI
• Format: Patent
• Language: Chinese; English
• Published: 05.06.2020
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING

The utility model provides a double-die drawing die for a copper pipe. The die comprises a lower die assembly and an upper die assembly, the upper die assembly is connected with the lower die assemblythrough a guide column and guide sleeve assembly, the lower die assembly comprises a first lower die, a second lower die, a lower die frame and a copper pipe lubricating assembly arranged between thefirst lower die and the second lower die, and the first lower die, the second lower die and the copper pipe lubricating assembly are arranged in the lower die frame; the copper pipe movably penetrates through the copper pipe lubricating assembly, and the two ends of the copper pipe are arranged on the first lower die and the second lower die respectively. According to the copper pipe double-die drawing die provided by the utility model, under the condition of fewer drawing passes, the high drawing precision and the small diameter of a copper pipe are realized, and meanwhile, the quality of the inner and outer surfaces