What Is Metal Stamping? | ESI Engineering

Types of Metal Stamping

There are three major types of metal stamping techniques: progressive, fourslide and deep draw.

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Progressive Die Stamping

Progressive die stamping features a number of stations, each with a unique function.

First, strip metal is feds through a progressive stamping press. The strip unrolls steadily from a coil and into the die press, where each station in the tool then performs a different cut, punch, or bend. The actions of each successive station add onto the work of the previous stations, resulting in a completed part.

A manufacturer might have to repeatedly change the tool on a single press or occupy a number of presses, each performing one action required for a completed part. Even using multiple presses, secondary machining services were often required to truly complete a part. For that reason, progressive die stamping is the ideal solution for metal parts with complex geometry to meet:

• Faster turnaround
• Lower labor cost
• Shorter run length
• Higher repeatability

Fourslide Stamping

Fourslide, or multi-slide, involves horizontal alignment and four different slides; in other words, four tools are used simultaneously to shape the workpiece. This process allows for intricate cuts and complex bends to develop even the most complex parts.

Fourslide metal stamping can offer several advantages over traditional press stamping that make it an ideal choice for many applications. Some of these advantages include:

• Versatility for more complex parts
• More flexibility for design changes

As its name implies, a fourslide has four slides &#; meaning that up to four different tools, one per slide, can be used to achieve multiple bends simultaneously. As material feeds into a fourslide, it is bent in quick succession by each shaft that is equipped with a tool.

Deep Draw Stamping

Deep drawing involves pulling a sheet metal blank into the die via a punch, forming it into a shape. The method is referred to as &#;deep drawing&#; when the depth of the drawn part exceeds its diameter. This type of forming is ideal for creating components that need several series of diameters and is a cost-effective alternative to turning processes, which typically require using up more raw materials. Common applications and products made from deep drawing include:

• Automotive components
• Aircraft parts
• Electronic relays
• Utensils and cookware

Short Run Stamping

Short run metal stamping requires minimal upfront tooling expenses and can be an ideal solution for prototypes or small projects. After the blank is created, manufacturers use a combination of custom tooling components and die inserts to bend, punch or drill the part. The custom forming operations and smaller run size can result in a higher per-piece charge, but the absence of tooling costs can make short run more cost-efficient for many projects, especially those requiring fast turnaround.

Stamping technology is an important metal forming process in industrial production. It uses molds to press, stretch, bend and twist metal materials to form parts of various shapes with high dimensional accuracy. The following is a detailed introduction to stamping technology:

1. Working principle and classification
(1)Working principle

Stamping technology uses molds to make metal materials plastically deform or separate under the action of stamping pressure, so as to obtain workpieces of required shape and size. Many factories can produce Customized Metal Stamping Copper according to customer requirements.

(2)Classification
Punching: A stamping process that separates sheet materials, separates the required parts from the sheet materials along the closed contour line, or flushes out the waste on the sheet materials. Including blanking, punching, trimming, cutting, etc.
Bending: A stamping process that bends the sheet materials into a certain angle and shape along a straight line (bending line), such as V-shaped bending, U-shaped bending, etc.
Drawing: A stamping process that stamps sheet materials into open hollow parts, or a stamping process that further changes the shape and size of hollow parts.
Forming: A stamping process that uses local plastic deformation (including bulging, shrinking, flanging, undulating forming, etc.) to produce a complex shape of the workpiece.

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2. Advantages and Applications
(1)Advantages
High production efficiency: Stamping technology is usually completed on a punch press, with high speed, and complex parts can be formed in one stamping.
High material utilization: The stamped parts produced are light in weight and have good rigidity, which is particularly suitable for mass production.
Low cost: Due to the high efficiency of large-scale production, the cost is low.
Stable quality: Mold processing makes the parts have high dimensional accuracy, good interchangeability, and excellent surface quality. Our company can produce very high-quality Copper Stamped Electrical Contacts.

(2)Applications
Automotive industry: used to manufacture body, chassis and engine parts.
Aerospace: used in the production of fuselage structural parts and engine parts.
Electronic appliances: used to produce various precision metal parts, such as connectors and terminals.
Home appliance industry: mainly used for the processing of home appliance housings and internal brackets.

3. Technology and equipment
Mechanical press: Fast speed, suitable for shallow drawing and bending processes.
Hydraulic press:  Adjustable stroke, stable pressure, suitable for deep drawing and flanging processes with high requirements.
Mold: It is the core component of stamping forming, consisting of upper and lower dies, usually made of high-strength alloy steel, and must have good wear resistance and impact resistance. The design and manufacture of the mold directly affect product quality and production efficiency, and are the key to the success of the stamping process. Our company has very advanced stamping equipment for producing various stamping parts such as Brass Sheet Metal Parts Terminal, Stainless Steel Stamping Parts, etc.

In summary, stamping technology is an important metal forming process in industrial production, with the advantages of high production efficiency, high material utilization, low cost and stable quality. With the continuous advancement of technology and changes in market demand, stamping technology is developing towards high efficiency, intelligence, precision and environmental protection.

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