There are numerous different types of metal stamping presses commonly used throughout today&#;s industrial manufacturing world. Likewise, there are many unique stamping operations which are optimized for different types of products or different metalworking features.

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Below, we discuss some of the most common designs of metal stamping presses along with their advantages. We also compare the many different metal stamping processes and the typical product applications thereof.

The Common Types of Metal Stamping Presses Compared

Mechanical Stamping Presses

Mechanical presses use an electric motor to generate energy. The kinetic energy is transferred and stored in a relatively massive mechanical flywheel, which in turn powers the punch-press system.

While not as powerful as their hydraulic press counterparts, today&#;s mechanical stamping presses are capable of delivering massive stamping force. Ratings typically range from 20 tons all the way up to 6,000 tons. These presses can be found in an array of sizes that range from approximately 20 to 6,000 tons. Mechanical presses are well-suited for both progressive metal stamping services and transfer press operations.

Mechanical Servo Stamping Presses

Mechanical servo presses differ from standard mechanical presses in that they utilize high capacity motors instead of flywheels. Servo presses offer increased manufacturing flexibility with the slide motion and positioning, stroke, and the press speed all being precisely controlled and programmable. They are powered by either a link-assisted drive system or a direct drive system.

Mechanical servo presses provide extremely high levels of instantaneous torque. Essentially, these machines are able to output maximum pressing force at any point within the stamping operation. Because of this, servo presses are the best-suited option for the stamping of high-strength metals.

Hydraulic Stamping Presses

Hydraulic presses differ from mechanical presses in that they utilize pressurized hydraulic fluid to apply force instead of a kinetic flywheel. The basic configuration uses two interconnected hydraulic cylinders: a large high-volume cylinder called the &#;ram&#; and a smaller low-volume cylinder called the &#;plunger&#;. As hydraulic fluid is displaced from the ram to the plunger, internal pressure within the cylinder ramps up to deliver up to ~10,000 tons of metal stamping force.

Common Metal Stamping Operations Include:

• Piercing (Punching)

  &#; Piercing or punching uses a press and die to create precise holes within the sheet metal workpiece.

• Blanking

  &#; Blanking is similar to the punching process, except that the punched components are the product and the remaining sheet metal is scrap.

• Draw

  &#; A die is precisely positioned beneath the sheet metal. The punch forces the sheet metal down onto the die. The metal is deformed around the die to create complex cross-sections.

• Stenciling

  &#; Stamping one side of the workpiece creates raised or indented words, figures, and designs into the sheet metal.

Complete Metal Stamping Services with a Full Line of Transfer and Progressive Presses

SPI utilizes a wide range of presses to provide both the flexibility and efficiency that your commercial metal stamping project demands. Our in-house stamping department is integrated with transfer presses, progressive die presses, and hand transfer lines.

Automated Feed Presses:

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• Seyi 660 Ton Servo Transfer

• Seyi 660 Ton

• Seyi 440 Ton

• Seyi 330 Ton

• Stamtec 660 Ton

• Warco 500 Ton

• Niagara 500 Ton

• Niagara 400 Ton

• Niagara 300 Ton

  
  

Secondary Stamping Presses:

• Clearing 500 Ton

• Verson 200 Ton (3)

• Verson 150 Ton (2)

The Single-Source Metal Stamping Company for Central Alabama and Beyond

SPI delivers quality metal stamping services in addition to our complete range of contract manufacturing capabilities. We offer decades of combined experience in the completion of industrial metal stamping projects for a wide range of commercial applications. Based In Gadsden, our facility is a premier supplier of Tier 1 and Tier 2 automotive stampings, as well as quality stamped products for utility vehicles, the HVAC industry, consumer appliances, and agricultural equipment.

A Guide to Metal Stamping Machinery 

There are three primary types of precision metal stamping machines:

1. Mechanical Presses

2. Hydraulic Presses

3. Mechanical Servo Presses

Generally these types of metal stamping presses are linked to an automatic feeder that guides strip/sheet metal through the press in either coil or blank form.

What types of machines are used in metal stamping?

Mechanical presses can deliver the highest production speeds, specifically for simple, shallow-formed parts from coils of sheet metal. Mechanical presses are fast and efficient and can be depended upon to produce high volume production runs with consistent results in repeated cycles. Mechanical presses use a motor connected to a flywheel mechanism to transfer and store energy. These presses can be found in a wide range of sizes varying from 20-6,000 tons. Mechanical presses are typically used for progressive and transfer stamping. Many automotive, appliance and hardware components fall into this category.

Hydraulic presses do not possess the high production speeds of a mechanical press, however they do offer wider flexibility with variable stroke lengths, die opening space and pressure. The hydraulic press is often the most suitable option when producing parts with deep, complex shapes that involve a lot of material flow and are not reliant on production speed. Components such as tanks, cylinders and bowls are frequently manufactured using hydraulic presses.

Mechanical Servo presses deliver much of the variability of the hydraulic press, at production speeds approaching that of mechanical presses with the addition of finer control for stroke, slide motion, slide position and speed. The programmable additions allow for many different combinations that can work with a wide variety of dies, part types and production speeds.

Deep Draw Metal Stamping Presses

Deep draw metal stamping presses are a type of mechanical press with the addition of a transfer mechanism , commonly referred to as transfer presses. Transfer press stamping is an efficient manufacturing process used to form medium to high volume complex components. Transfer presses shape flat blanks of metal by drawing them into dies under extreme pressure. The metal workpiece is transferred through a series of drawing, re-drawing and other shaping, cutting or embossing stations to arrive at its final shape. In stamping, a single press maneuvers a full setup of tools which typically consist of a series of dies arranged in a production line.

The benefits to transfer press stamping to other metal stamping methods include:

• Transfer press stampings, unlike other stamping machines, separate the part from the strip and the initial operation. This allows for significantly more complex geometries and incorporates secondary cutting and embossing operations into the press.
• The transfer press stamping process has become very efficient through automation technology. Automatic transfer press systems make it possible to condense a whole stamping operation into a single press.
• Transfer press stamping involves accurate alignment and effortless mechanical transfer between stations. The use of automation technology proficiently meets these requirements, making it easy to manufacture high volume orders without giving up part process or quality.  

Premium Deep Draw Metal Stamping from the Experts at Prospect Machine Products

To learn more about our deep draw metal stamping capabilities, contact us for a quote or book a meeting today for your next project.

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