Types of Metal Stamping
Stamping or pressing is the manufacturing process used to convert a flat sheet of metal into its final shape. In this process, a flat piece of metal (either in blank form or coil form) is placed in a stamping press where the tool and die surfaces form the metal into its final shape.
What is stamping?
Stamping or pressing is the manufacturing process used to convert a flat sheet of metal into its final shape. In this process, a flat piece of metal (either in blank form or coil form) is placed in a stamping press where the tool and die surfaces form the metal into its final shape.
Stamping encompasses a variety of sheet metal forming manufacturing processes, such as punching using a machine press or stamping press, blanking, embossing, bending, flanging, and coining.
This could be a one-step process where each stroke of the press creates the desired shape on the sheet metal part, or it could be done through a series of steps. The process is usually carried out on sheet metal, but can also be used on other materials such as polystyrene.
Machine Screw Thread Rolling Die
Stamping Stainless Steel Cold Water Kettel Lid
The progressive die is usually fed from the steel coil, the spool used to unroll the roll, into the straightener to level the roll, and then into the feeder, which advances the material into the press and punches the die at a predetermined feed length. Depending on the complexity of the part, the number of stations in the die can be determined. Stamping is usually performed on cold sheet metal.
Types of Metal Stamping
There are three major types of metal stamping techniques: progressive, four-slide, and deep draw.
1. 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 to 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 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
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2. 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.
Four slide 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 four-slide 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 four-slide, it is bent in quick succession by each shaft that is equipped with a tool.
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3. 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.
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Huicong Hardware Product is a Metal Stamping manufacturer. Our custom metal stamping services combine the use of stamping machines, deep-drawing machines, laser cutting, and welding machines, fabrication machines, and all types of processing equipment to provide the most cost effective solution for high volume manufacturing of metal stamping parts.
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