What is a forming die
What is a forming die
The mold that directly copies and forms the blank or semi-finished workpiece according to the shape of the convex and concave mold, and the material itself only produces local plastic deformation is called the forming die (as shown in Figure 1-5, it is the bulging die in the middle of the cylindrical part). The forming process can be divided into Burring, flanging, bulging, necking, expanding, undulating forming and sizing, as shown in table 1-4.It’s basic process for metal stamping and deep drawing.
Figure 1-5 bulging die
1-punch in the middle of cylindrical part; 2,3 – female die: 4 – unloader: 5 – Ejector
Table 1-4 Forming process
| Process | Sketch | Characteristics and application |
| Burring |  |
Punch the pre punched semi-finished sheet metal or the non punched sheet metal into a vertical edge |
| Flanging |  |
Shape the edges of semi-finished sheet metal into vertical edges according to curves or arcs |
| Bulging |  |
Deformation is realized under the action of bidirectional tensile stress to form parts with various spatial surface shapes |
| Necking |  |
On a certain part of a hollow blank or tubular blank, its radial size is reduced |
| Flaring |  |
On a certain part of a hollow blank or tubular blank, its radial size is expanded |
| Concave-Convex |  |
Bulges or depressions of various shapes are made on the surface of blank or workpiece by local forming |
| Shape correction |  |
Correct the manufacturing shape to improve the dimensional accuracy of the formed products or obtain a smaller fillet radius. |
