Drawing die

• Main Authors: TAN ZHIWEN, WEI XINGMIN, WEI XIANBO, FENG QINGFENG, DENG JINSONG
• Format: Patent
• Language: Chinese; English
• Published: 19.02.2014
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

A drawing die comprises an upper die and a lower die. The upper die has a forming surface used for forming parts. The lower die comprises a lower die seat, a die cavity fixed on the lower die seat and an edge pressing ring capable of sliding corresponding to the die cavity. The die cavity is provided with a die cavity surface corresponding to the forming surface. The lower die is provided with a fitting through hole passing the die cavity surface and a lower moving block capable of sliding along the fitting through hole. The edge pressing ring is sequentially located at a first position, a second position and a third position in the process of machining parts. When the edge pressing ring is located at the first position, a blank is clamped between the edge pressing ring and the upper die and contacts with the lower moving block; when the edge pressing ring moves from the first position to the second position, the lower moving block presses against the blank and performs pre-drawing on the blank; when the edge