V12 / V40 85° Centered Two-Face Double-V Press Brake Lower Die

This two-face double-V press brake lower die combines V12 and V40 openings, both manufactured at an 85° die angle.

Unlike conventional double-V dies where two grooves are positioned side by side on the same working surface, the V12 and V40 grooves are arranged on separate working faces of the die body.

The illustrated configuration has an overall width of 50 mm, an overall height of 50 mm, and a rated load capacity of 100 ton/m.

This structure is particularly suitable when there is a large difference between the required V-openings. A V40 groove requires considerably more shoulder width and surrounding die-body material than a smaller V12 groove. Positioning both grooves on the same narrow working surface can make the tooling unnecessarily wide or reduce the available supporting material around the grooves.

By distributing the V12 and V40 openings across separate working faces, the lower die can use its cross-section more efficiently while maintaining practical structural support around both grooves.

Another important feature of this configuration is its centered mounting design. When the selected V-opening is placed in the working position, the centerline of the active V-groove is aligned with the centerline of the plug-in mounting interface.

This differs from an offset lower die configuration, where the active V-groove centerline is intentionally displaced from the mounting centerline.

The V12 / V40 design shown here represents one available tooling configuration only. V-opening combinations, groove angles, overall dimensions, working-face arrangement, centerline position and mounting geometry can all be customized according to customer requirements.

Key Features

• Two-face double-V / 2V lower die
• Integrated V12 and V40 openings
• Both V-grooves manufactured at 85°
• V-openings positioned on separate working faces
• Centered mounting configuration
• Active V-groove centerline aligned with mounting centerline
• Suitable for combining small and large V-openings
• V40 groove provides significantly greater forming clearance
• Efficient use of the available die-body cross-section
• Sufficient supporting material around both V-grooves
• Overall width: 50 mm
• Overall height: 50 mm
• Rated load capacity: 100 ton/m
• Plug-in mounting system
• Custom V-opening combinations available
• Centered or offset mounting configurations available
• Custom angles, dimensions, lengths and mounting interfaces available

Technical Specifications

Two-Face Double-V Structure

The V12 and V40 grooves are arranged on different working faces rather than being positioned next to each other on the same surface.

This structure can be advantageous when:

• The V-opening sizes differ greatly
• A large V-opening requires more shoulder width
• Same-face groove spacing becomes impractical
• Sufficient die-body material must be maintained around each groove
• A compact overall tooling width is preferred
• Two substantially different bending ranges are required within one lower die

By distributing the grooves across different working faces, the tooling can combine a small V12 opening and a much larger V40 opening without forcing both into the same limited upper surface.

Centered Mounting Configuration

The illustrated die uses a centered mounting configuration.

When the selected V-opening is positioned for bending:

the active V-groove centerline is aligned with the centerline of the plug-in mounting interface.

This provides a direct centerline relationship between the working groove and the lower tooling mount.

It differs from an offset mounting structure, where the V-groove centerline is intentionally shifted away from the mounting centerline.

Depending on the customer's press brake, lower die holder and bending requirements, WYS Machinery can manufacture:

• Centered mounting structures
• Offset mounting structures
• Customized positioning geometries

V12 and V40 Working Openings

The V12 groove provides a smaller forming opening for applications requiring a relatively small natural inside bend radius and narrower die opening.

The significantly larger V40 groove provides much greater forming clearance and is suitable for applications involving:

• Thicker sheet material
• Larger natural inside bend radii
• Wider forming requirements
• Reduced forming force compared with a smaller V-opening under otherwise similar conditions
• Bending jobs where a small V-opening would provide insufficient clearance

The large difference between V12 and V40 is one of the main reasons why a two-face arrangement is practical for this tooling configuration.

The final V-opening should always be selected according to:

• Sheet thickness
• Material grade
• Tensile strength
• Required inside bend radius
• Bend angle
• Flange dimensions
• Forming force
• Bending method

Typical Applications

This V12 / V40 centered two-face lower die is suitable for:

• General sheet metal bending
• Mixed-thickness production
• Medium and thicker sheet fabrication
• Carbon steel bending
• Stainless steel bending
• Machinery and equipment manufacturing
• Electrical cabinet fabrication
• Industrial enclosure production
• Structural sheet metal components
• Applications requiring both small and large V-openings
• Production requiring different inside bend radii
• Press brake systems requiring centered lower-tool alignment

Why Use Separate Working Faces?

When two V-openings are similar in size, they can often be positioned side by side on one working surface.

However, when the difference becomes much larger, such as V12 and V40, a same-face arrangement can create geometric limitations including:

• Insufficient spacing between grooves
• Reduced shoulder material
• Limited structural support around the larger V-opening
• Excessive overall die width
• Inefficient use of the available die-body section

A two-face double-V structure provides a more practical solution.

By positioning the V12 and V40 grooves on separate working faces, the lower die can maintain sufficient material around both grooves while keeping the tooling body structurally efficient.

Plug-In Lower Die Mounting System

The illustrated lower die uses a plug-in mounting system.

The bottom profile engages with the corresponding lower die holder or press brake table interface to provide positioning and support during bending.

When a different V-opening is required, the die can be repositioned so that the selected groove becomes the active working surface.

The plug-in profile shown here represents one reference configuration only.

WYS Machinery can customize:

• Plug-in geometry
• Mounting dimensions
• Centerline position
• Centered or offset mounting
• Overall die cross-section
• Tooling length
• Segmentation

according to the customer's existing press brake and tooling system.

Custom Double-V Press Brake Dies

WYS Machinery manufactures standard and customized double-V press brake lower dies, including conventional same-face, two-face, centered and offset structures.

The V12 / V40 tooling shown on this page is one design example rather than a fixed manufacturing limitation.

Customers can customize:

V-opening combination, V-groove angle, working-face arrangement, overall height, overall width, shoulder geometry, die-body cross-section, load capacity, mounting centerline position, tool length, segmentation and mounting interface.

For special applications, customers can provide:

• Workpiece drawings
• Material grade
• Sheet thickness
• Required bending angle
• Required V-openings
• Existing tooling drawing
• Existing tooling sample
• Press brake model

Our engineering team can evaluate the application and recommend a suitable lower die configuration.

Compatible Press Brake Tooling Systems

WYS Machinery manufactures lower dies for different press brake tooling standards and machine configurations.

Available configurations include:

AMADA / Promecam Type, TRUMPF Type, WILA Type, LVD Type, Bystronic Type, European Type and other customized press brake tooling systems.

The plug-in and centered mounting structure shown here represents one reference configuration only.

The V-opening, groove angle, overall height, width, working-face arrangement, mounting profile and centerline relationship can all be customized according to the customer's machine.

Standard & Custom Lower Die Solutions

WYS Machinery manufactures a wide range of press brake lower tooling, including:

Single-V Dies · Double-V Dies · Two-Face Double-V Dies · Centered Double-V Dies · Offset Double-V Dies · Multi-V Dies · Acute-Angle Dies · Wide-Opening Dies · High-Tonnage Dies · Special Lower Dies · Custom Press Brake Tooling

The lower die structure can be selected or engineered according to the actual bending process rather than being limited to a fixed catalog profile.