What are the basics of stamping dies?

Stamping Die Terminology Basics

1. Rolled edge

Edge rolling is a stamping process in which the edge of the process part is rolled into a nearly closed circle. The axis of the rolled edge circle is linear in shape.

2、Rolled Edge

A rolled edge is a stamping process in which the top edge of a hollow part is rolled into a nearly closed circle.

3、Drawing

Stretching is a stamping process that transforms a flat stock or process part into a curved surface, which is formed by the extension of the material at the bottom of the die.

4、Bending

Bending is a stamping process in which the bending deformation is achieved under the combined effect of tension and bending moment, so that the entire bending cross-section is subjected to tensile stress.

5、Expansion

Expansion is the hollow or tubular parts along the radial outward expansion of a stamping process. Cutting Cutting is a stamping process in which the formed part is divided into several parts.

6. Levelling

Levelling is a stamping process to improve the straightness of a partially or overall flat part.

7、Roll Forming

It is a stamping process that relies on the extension of the material to form a local depression or bulge in the process part. The change in material thickness in undulating forming is non-intentional, i.e. the small change in thickness is a natural result of the deformation process, not a design requirement.

8、Bending

Bending is the use of pressure to produce plastic deformation of the material, thus being bent into a certain curvature, a certain angle of the shape of the stamping process.

9, chisel cutting

Chiselling is the use of sharp-edged chiselling die for the drop or punching process. Chisel cutting does not have a lower die, the pad under the material is only a flat plate, the majority of the material being punched is non-metal.

10、Deep hole punching

Deep hole punching is a punching process where the hole diameter is equal to or less than the thickness of the material to be punched.

11、Falling material

The material to be separated becomes a workpiece or process piece, mostly flat.

12. Indentation

Indentation is a stamping process in which a hollow or tubular part is pressed to reduce its size at the open end.

13、Shaping

Shaping is a stamping process that relies on the flow of material to change the shape and size of a process part in a small amount to ensure the accuracy of the workpiece.

14. Finishing

Finishing is a stamping process in which a small amount of material is cut away along the profile or internal contour to improve edge finish and perpendicularity. The finishing process generally improves dimensional accuracy at the same time.

15. Hole Turning

Hole turning is a stamping process in which the material is turned into a side-standing flange along the perimeter of the inner hole.

16. Flanging

Flanging is a stamping process in which the material is turned into a short, side-standing edge around the curve of the profile.

17、Drawing

Deep drawing is a stamping process in which a flat blank or process part is turned into a hollow part, or a hollow part is further changed in shape and size. When deep drawing, the hollow parts mainly rely on the material located outside the bottom of the convex die to flow into the concave die and form.

18、Continuous deep drawing

Continuous deep drawing is a stamping method in which the required shape and size are gradually formed on a strip of material (rolled material) by using the same pair of dies (continuous deep drawing die) through multiple deep drawing.

19、Thin drawing

The thinning deep-drawing is a deep-drawing process to further change the shape and size of the hollow process parts with the intention of thinning the side walls.

20、Backdrawing

Anti-drawing is a kind of deep drawing process to turn the inner wall of the hollow process parts outward.

21、Differential temperature deep drawing

Differential temperature deep drawing is the use of heating, cooling means, so that the temperature of the material to be deformed part of the material is much higher than the temperature of the deformed part of the material, so as to improve the degree of deformation of a deep drawing process.

22、Hydraulic deep drawing

Hydraulic deep drawing is the use of the liquid in a rigid or flexible container, instead of convex or concave die to form a hollow parts of a deep drawing process.

23、Pressing bar

Crimping is a kind of roll forming. When the local undulation in the form of tendons, the corresponding undulation forming process is known as ribbing