Many people know about stamping, but they always know a little about it, and it is difficult to make it clear. Today’s content will take everyone to understand what stamping is and what applications are there for stamping! You will understand after reading it!
What is stamping?
Stamping is a forming processing method that relies on presses and dies to apply external force to plates, strips, pipes and profiles to cause plastic deformation or separation, so as to obtain workpieces (stamping parts) of the required shape and size.
The car body, chassis, fuel tank, radiator fins, boiler drum, container shell, motor, electrical iron core silicon steel sheet, etc. are all stamped and processed. There are also a large number of stamping parts in products such as instruments, household appliances, bicycles, office machinery, and living utensils.
According to the stamping processing temperature, it is divided into hot stamping and cold stamping. The former is suitable for sheet metal processing with high deformation resistance and poor plasticity; the latter is carried out at room temperature and is a commonly used method for stamping thin plates.
Sheet materials, molds and equipment are the three elements of stamping processing.
Sheet material: The surface and internal properties of the sheet material used for stamping have a great influence on the quality of the stamped product.
6 points for the requirements of stamping materials
① The thickness is accurate and uniform.
② The surface is smooth, without spots, scars, scratches, and surface cracks. Prevent the generation of waste products.
③ The yield strength is uniform and there is no obvious directionality. In order to reduce the occurrence of defective products or waste products
④ High uniform elongation. To prevent uneven deformation.
⑤ The yield ratio is low. In order to improve the accuracy of bending parts.
⑥ Low work hardening. In order to prevent future deformation
Mold: The precision and structure of the mold directly affect the forming and precision of the stamping parts. Mold manufacturing cost and life are important factors that affect the cost and quality of stamping parts.
equipment
According to transmission structure: manual punching machine, mechanical punching machine, hydraulic punching machine, pneumatic punching machine, high-speed mechanical punching machine, CNC punching machine
According to processing precision: ordinary punch, precision punch
According to the scope of use: ordinary punches, special punches
Processing characteristics
1. The stamping process has high production efficiency, convenient operation, and easy realization of mechanization and automation.
2. The stamping quality is stable, the interchangeability is good, and it has the characteristics of "exactly the same".
3. The punching strength and rigidity are both high.
4. The cost of stamping parts is lower.
Now let’s take a look at the animation~ You will know more about stamping
In fact, its hand speed is so big!
In the process of stretching, in order to prevent the material from being too sudden, so I have to come bit by bit~
The round workpiece is bent like this~
Pendulum type workpiece bending~
V-shaped bend
Just now, all plates are bent, so how is the round tube bent?
Let's see what the legendary rolling is about~
