introduction of Press die stamping process

The cold die stamping process is a metal processing method, which is mainly aimed at metal materials. The material is forced to deform or separate through pressure equipment such as a punch press to obtain product parts that meet actual requirements, referred to as stamping parts.

There are many situations in the stamping process of a mold, and many friends do not understand this. Here I will summarize the most common stamping processes for everyone. as follows:

1. Blanking

A general term for a stamping process that separates materials. It includes blanking, punching, piercing, grooving, cutting, chiseling, trimming, tongue cutting, etc.

2. Cutting profile edges and burs

It is mainly to cut off a circle of excess material on the periphery of the material to achieve a stamping process that meets the size requirements

3. Cut the tongue

A certain part of the material is cut through a cut, but not all of it is cut. It is usually a rectangle that only cuts three sides and leaves one side intact. The main function is to fix the step distance.

4. Flaring

This process is not common, most of the tubular parts need to be expanded into a trumpet-shaped end or somewhere

5. Neck

Contrary to flaring, it is a stamping process in which the end or a certain part of the tubular part needs to be reduced inward.

6. Punching

In order to obtain the hollow part of the part, the complete material is separated through the punch and the knife edge to obtain the corresponding hole size

7. fine blanking

When the stamping parts require a full-bright section quality, it can be called "fine blanking" (Note: ordinary blanking sections are divided into four parts: collapsed section, bright section, fractured section, and burr area)

8. Full-bright blanking

The difference with fine blanking is that full-bright blanking must obtain full-bright bands in one-step blanking, while fine blanking is not

9. Deep hole punching

When the hole diameter in the product is smaller than the thickness of the material, it can be understood as deep hole punching, and the difficulty of punching is manifested as the punch is easy to break

10. Convex hull

Punch a bump on the flat material to achieve the corresponding use requirements

11. Forming

Many friends understand forming as bending, which is not rigorous. Because bending is a type of forming, it refers to the general term of all fluid material processes during forming

12. Bending

A conventional process of plastically deforming flat materials through convex and concave mold inserts to obtain corresponding angles and shapes

13. Beading

This is generally used in sharp corner bending forming inserts. It is mainly a structure that reduces the rebound of the material by punching the material at the bending position to reduce the rebound of the material and ensure the stability of the angle.

14. Embossing

A process of pressing a special pattern on the surface of the material through a punch. Commonly used are: embossing, pitting, etc.

15, roll round

A type of molding process is a process of curling the shape of the product into a circle

16. Flip holes

The process of turning the inner hole of the stamping part outwards to obtain a certain height of the side

17. Leveling

Mainly for the situation where the flatness of the product is high, when the flatness of the stamping part is out of tolerance due to the stress, the leveling process needs to be used for leveling

18. Reshaping

After the product is formed, when the angle and shape are not the theoretical size, it is necessary to consider adding a process for fine-tuning to ensure the stability of the angle. This process is called "reshaping"

19, deep drawing

Usually refers to the process of obtaining hollow parts from a flat material by a method called the stretching process, which is mainly completed by convex and concave molds

20, continuous deep drawing

Usually refers to a stretching process formed by stretching the material at the same position multiple times through one or several molds in a material belt

21, thinning and deepening

Continuous drawing and deep drawing belong to the thinning drawing series, which means that the wall thickness of the part after drawing will be less than the thickness of the material itself

22. Draw

The principle is similar to that of convex hulls, both of which are to emboss the material. However, drawing usually refers to automobile parts, which belong to a more complex forming series, and its drawing structure is also relatively complicated.

23. Engineering model

A set of molds that can only complete one stamping process at a time in a stamping process.

24, composite mold

A set of molds that can complete two or more different stamping processes in one stamping process.

25, progressive die

A set of molds are fed by the material belt, and two or more processes are arranged in sequence, and they are sequentially fed with the stamping process to finally reach the general name of the mold type of the qualified product.