V4 / V7 85° Double-V Press Brake Lower Die

This double-V press brake lower die, also known as a 2V lower die, combines V4 and V7 openings within one tooling body.

Both V-grooves are manufactured at an 85° die angle and are positioned side by side on the same working surface, providing two small V-opening options within a compact lower die.

The illustrated configuration has an overall width of 50 mm, an overall height of 46 mm, and a rated load capacity of 80 ton/m.

The V4 and V7 openings are particularly suitable for precision sheet metal bending applications requiring relatively small V-die openings. Integrating both grooves into one lower tool provides greater flexibility when production involves different thin-sheet specifications, bend radii or forming requirements.

Unlike two-face double-V structures, where the V-grooves are distributed across separate working faces, this configuration places both openings on the same upper working plane. This arrangement is practical when the two V-openings are relatively small and sufficient shoulder material and groove spacing can be maintained within the die width.

The illustrated version uses a plug-in mounting system.

The V4 / V7 dimensions shown here represent one available tooling configuration rather than a fixed manufacturing limitation. V-opening combinations, die angles, overall height, width, tooling length, load capacity and mounting structure can all be customized according to customer requirements.

Key Features

• Double-V / 2V press brake lower die
• Integrated V4 and V7 openings
• Both V-grooves manufactured at 85°
• Both grooves positioned on the same working surface
• Suitable for small V-opening bending applications
• Overall width: 50 mm
• Overall height: 46 mm
• Rated load capacity: 80 ton/m
• Plug-in mounting system
• Two working V-grooves integrated into one lower die
• Compact tooling configuration
• Precision-machined V-groove geometry
• Custom V-opening combinations available
• Custom die angles available
• Custom height and width available
• Custom tool length and segmentation available
• Custom mounting profiles available

Technical Specifications

Same-Surface Double-V Configuration

The V4 and V7 grooves are arranged side by side on the same working surface.

This type of double-V layout is particularly practical when:

• Both V-openings are relatively small
• Adequate shoulder material can be maintained between the grooves
• Sufficient groove spacing is available
• A compact tooling body is required
• Two related V-opening sizes are frequently used in production

Compared with a two-face double-V structure, no repositioning to another working face is required to accommodate the two grooves within the die cross-section.

The actual tooling layout should always be determined according to the V-opening combination, die width, required load capacity and supporting material around each groove.

V4 and V7 Working Openings

The V4 opening provides a very small die opening for precision thin-sheet bending applications where a small forming width and relatively small bend radius are required.

The V7 opening provides additional forming clearance while remaining within the small-opening range.

Having both V4 and V7 within one lower die can provide practical flexibility when production includes different:

• Sheet thicknesses
• Material grades
• Required inside bend radii
• Precision forming requirements
• Workpiece specifications

The appropriate V-opening should always be selected according to the actual material, thickness, bending method and required bend geometry.

Typical Applications

This V4 / V7 double-V lower die is suitable for:

• Precision thin-sheet bending
• Small V-opening forming
• Electrical enclosure fabrication
• Control panel manufacturing
• Precision brackets
• Stainless steel sheet bending
• Carbon steel sheet bending
• Small sheet metal components
• Machinery covers and housings
• Mixed-production bending
• Applications requiring two small V-opening sizes

The final V-opening selection should be based on the sheet thickness, material strength, desired inside radius and bending method.

Why Use Two V-Grooves on the Same Working Surface?

For relatively small V-opening combinations such as V4 and V7, two grooves can be positioned next to each other while maintaining sufficient die-body material around the working areas.

This provides several practical advantages:

• Two V-opening options within one lower die
• Compact tooling dimensions
• Efficient use of the upper working surface
• Reduced need for separate single-V tooling
• Convenient tooling selection for different bending requirements

When the V-openings become much larger or their size difference becomes excessive, a same-surface arrangement may no longer be practical. In those situations, WYS Machinery can manufacture two-face double-V structures with the V-grooves positioned on separate working faces.

Plug-In Lower Die Mounting System

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

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

The plug-in geometry shown in the drawing represents one reference configuration only.

WYS Machinery can customize:

• Bottom mounting profile
• Plug-in dimensions
• Positioning geometry
• Overall die cross-section
• Tool length
• Segmented length
• Centered or offset positioning structures

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

Custom Double-V Press Brake Dies

WYS Machinery manufactures both standard and customized double-V press brake lower dies.

The V4 / V7 configuration shown on this page is one manufactured example rather than a fixed product limitation.

Customers can customize:

V-opening combination, V-groove angle, overall height, overall width, groove spacing, shoulder geometry, load capacity, tool length, segmented length, bottom profile and mounting interface.

For non-standard bending applications, customers can provide:

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

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

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 V4 / V7 plug-in structure shown on this page is only one reference design.

The V-opening, die angle, overall height, width, groove arrangement and mounting interface can all be customized according to the customer's press brake.

Standard & Custom Lower Die Solutions

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

Single-V Dies · Double-V Dies · Same-Surface 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 · Special Lower Dies · Custom Press Brake Tooling

This allows the tooling structure to be selected according to the actual bending requirement rather than being limited to a fixed catalog profile.