Understanding the Different Types of Press Brake Dies

Press brake dies are essential tools used in press brake machines to bend sheet metal into desired shapes. They consist of two main components: the punch and the die. The punch is the top tool that presses the material into the die, which is the bottom tool, to create precise bends. The interaction between these components determines the final shape and accuracy of the bend.

Different types of press brake dies can be used to process products of different shapes. Distinguishing and understanding different press brake dies will help you make better use of your press brake.

Types of Press Brake Dies


A V die, a crucial component in press brake tooling, features a V-shaped groove to facilitate various bending operations. It comes in different types, such as standard, wide, and narrow, to handle a range of materials and thicknesses. The V die enables precise and efficient bending by allowing the press brake’s punch to press sheet metal into the groove, forming the desired angle. Its versatility, precision, and efficiency make it essential for industries like automotive, aerospace, and manufacturing, where accurate and consistent bends are critical.

V dies can be categorized into several types based on their design and application to accommodate different bending needs and material thicknesses:

  • Standard V Dies: These are the most common type, used for general-purpose bending. They come in various sizes to handle different material thicknesses.
  • Wide V Dies: Designed for thicker materials, these dies have a broader V-shaped groove to accommodate higher bending forces without damaging the material.
  • Narrow V Dies: These are used for thinner materials and precision bending. The narrower groove provides greater accuracy and reduces the risk of deformation.
  • Acute Angle V Dies: Specifically designed for creating angles less than 90 degrees, these dies are used when sharp bends are required.
  • Adjustable V Dies: These dies have adjustable sides that can be moved to change the width of the V groove, offering flexibility to handle various material thicknesses and bend angles with a single die.


A key mold type among press brake molds, U dies have U-shaped grooves designed to create U-shaped bends in sheet metal. These molds are particularly useful for forming channels or parts with large bend radii. U-shaped molds accommodate a variety of materials and thicknesses, producing consistent and precise U-shaped bends. Their applications are critical in automotive, construction and manufacturing industries requiring specific U-shaped components. U molds are designed for smooth bending operations, contributing to efficient, high-quality production.

U-shaped dies are used to obtain bends with large inner radii or very sharp angles, which are especially necessary to form cylindrical or spherical shapes. These molds can have a larger hollow edge radius, which aids the bending process and prevents the sheet from getting stuck inside the mold.


Z-shaped molds are specialized molds in press brake molds used for bending operations that require the formation of Z-shaped profiles or bends. These molds have a unique design with multiple bends or angles, allowing them to create complex shapes. Z-die molds are typically used in applications that require complex or custom molded parts. Their versatility in creating complex profiles makes them indispensable for industries that require precise and customized metal bending solutions.

Radius Dies

A radius die is a press brake tool assembly designed to produce a bend with a consistent curve or radius along the length of the bend. They have a curved profile that shapes sheet metal into smooth arcs or curves, ensuring dimensional accuracy and aesthetic appeal in applications such as architectural metalwork, furniture making and artistic metalwork. With the versatility to create different radius bends, the precision to control the bending process, and the ability to minimize material deformation, radius dies are an essential tool in every industry that requires bent parts.

Multi-V Dies

Multi-V dies are specially designed dies with multiple slots and different angles to provide a high degree of flexibility and precision in creating complex bends and parts. Due to their versatility, these molds can be adapted to different shapes and configurations, allowing for more detailed and high-quality work.

The key features of Multi-V dies include:

Versatility: Multi-V dies can accommodate a variety of material thicknesses and bend radii by offering multiple V-grooves of different sizes.

Flexibility: Operators can easily adjust the position of the Multi-V die along the press brake bed to select the desired V-groove for the specific bending operation.

Precision: Multi-V dies provide precise control over the bending process, ensuring consistent bend angles and dimensional accuracy across multiple workpieces.

Complex Bending: Multi-V dies are particularly useful for forming complex shapes and profiles that require multiple bends with different radii.

Types of Punch Dies

Standard Straight Punches

Standard straight punches are fundamental components of press brake tooling systems used for metal bending operations. These punches feature a straight, cylindrical shape and are typically made from high-strength tool steel or carbide materials to withstand the forces involved in bending metal.

Gooseneck Punch Dies

Gooseneck punch dies, also known as goose-neck punches or simply goosenecks, are specialized tooling components used in press brake operations. Their distinctive design features a curved or bent shape resembling a goose’s neck, hence the name. These dies serve a crucial role in bending operations where access to certain areas of the workpiece is limited or where complex bending geometries are required.

Gooseneck dies have several features that can help complete special bending tasks during bending operations:

Access tight spaces: The curved shape of the gooseneck die allows it to get into small or restricted spaces in the workpiece, allowing bending operations near edges or in areas that are inaccessible to standard straight punches.

Reverse bending: Gooseneck dies are particularly useful for reverse bending operations, where the workpiece needs to be bent in the opposite direction of the previous bend. The curved profile of the mold allows for clearance on the curved portion of the workpiece.

Complex curved geometries: They are critical for forming complex curved geometries such as flanges, channels, or other irregular shapes.

Versatility: Gooseneck molds come in a variety of sizes and configurations to meet different bending requirements. They can be used with different lengths of straight sections and different curvatures to achieve specific bending results.

Hemming Punches

Hemming dies are used to flatten a part after a 30° or other very acute bend has been made to form a hem. They are flat-topped and are used with a matching “hammer” punch that is also flat. Combination bend-and-hem punch and die sets can make the initial bend and then have their flat outer edges used to hem the part in a second operation without additional setup. Two stage hemming dies are spring-loaded two section dies and work with a standard punch. The upper part of the die has a V-opening and is used to form the bend normally, but it and the lower part have flat surfaces extending outward that are brought together under the tonnage of the ram pushing down, so a hem can be made between them in a second immediate operation.


Understanding these press brake molds is critical to your manufacturing production, and mastering these tools will increase productivity and ensure high-quality output. If you need to purchase different accessories for your bending machine, you can click on the homepage to learn about the purchase. Leno focuses on manufacturing high-quality and high-precision bending machine accessories. Welcome to contact us.


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