Concave die base plate for drop hammer die and application method

• Main Authors: XU QIAOMEI, RAN HAIJUN, RUAN WANXIN, LIN LEI
• Format: Patent
• Language: Chinese; English
• Published: 29.05.2018
• 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

The invention discloses a concave die base plate for a drop hammer die and a machining process. The concave die base plate is arranged between a convex die and a concave die and is used for machininga fairing with large forming depth. A concave portion allowing the convex die to be embedded is arranged on the concave die. The guide fillet radius of the upper edge of the concave portion is r. A plate body is included. The plate body and the upper surface of the concave die are attached in a matched manner. An opening is formed in the position, corresponding to the concave portion of the concave die, of the plate body. The shape of the opening is consistent with that of the upper edge of the concave portion, and the size of the opening is larger than that of the upper edge of the concave die by 1 mm to 2 mm. The guide fillet radius of the upper edge of the opening is R, and the fillet radius R is larger than r. Limiting blocks for locating the plate body on the concave die are arrangedon one side of the plate b