Structured Manufacturing Data (2026)

V-Die Set

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard V-Die Set used in the Fabricated Metal Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical V-Die Set is characterized by the integration of Lower Die Block and Upper Punch. In industrial production environments, manufacturers listed on CNFX commonly emphasize Tool Steel (e.g., D2, A2) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A specialized tooling assembly used in press brakes to create precise V-shaped bends in metal sheets.

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Product Specifications

Technical details and manufacturing context for V-Die Set

Definition
A V-Die Set is a critical component of an Industrial Metal Bending Press (press brake) consisting of a matched upper punch and lower die, both featuring a V-shaped profile. It is mounted onto the press to apply force and form metal sheets into specific angles, primarily 90-degree bends, through a process of plastic deformation. The set's geometry determines the bend angle, inside radius, and minimum flange length of the finished part.
Working Principle
The V-Die Set operates on the principle of three-point bending. The metal sheet is placed over the V-opening of the lower die. The upper punch (mounted on the press ram) descends and applies concentrated force at two points on the sheet, pressing it into the die's V-opening. The bottom of the V acts as the third point, causing the material to yield and bend plastically around the die's radius. The depth of the punch penetration controls the final bend angle.
Common Materials
Tool Steel (e.g., D2, A2), Alloy Steel, Carbide (for wear inserts)
Technical Parameters
  • The V-opening width of the lower die, which is the primary specification. It influences the minimum bend radius, required bending force, and the material thickness it can accommodate (typically 6-8 times the material thickness). Common sizes range from 10mm to 100mm+. (mm) Customizable
Components / BOM
  • Lower Die Block Part
    The stationary base component with a precision-machined V-shaped opening. It supports the material and provides the form around which the bend is made.
    Material: Tool Steel
  • Upper Punch Part
    The moving component attached to the press ram. Its V-shaped tip contacts the workpiece and forces it into the lower die to create the bend.
    Material: Tool Steel
  • Clamping Features Part
    Grooves, slots, or holes (e.g., American, European style) that allow the die set to be securely mounted and aligned on the press brake.
    Material: Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for V-Die Set.

precision V-die set for press brakes tool steel V-die set metal bending custom V-die set for fabricated metal products industrial V-die set with carbide inserts heavy-duty V-die set for sheet metal fabrication

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 1000 tons (8.9 MN) depending on die material and construction
other spec: Sheet thickness range: 0.5-25 mm (0.02-1.0 in), V-opening tolerance: ±0.05 mm (±0.002 in)
temperature: Ambient to 150°C (302°F) for standard tool steel, higher with specialized materials
Media Compatibility
✓ Mild steel sheets ✓ Stainless steel sheets ✓ Aluminum sheets
Unsuitable: Abrasive composite materials (e.g., fiberglass-reinforced polymers)
Sizing Data Required
  • Material thickness (mm/in)
  • Material tensile strength (MPa/psi)
  • Required bend angle (degrees)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Die edge chipping or cracking
Cause: Excessive tonnage beyond rated capacity, misalignment during operation, or material fatigue from cyclic loading
Wear and dimensional inaccuracy
Cause: Abrasive wear from sheet metal debris, lack of proper lubrication, or repeated contact with work-hardened materials
Maintenance Indicators
  • Visible cracks, chips, or deformation on die edges
  • Abnormal knocking or grinding sounds during press operation
Engineering Tips
  • Implement regular die alignment checks and tonnage monitoring to prevent overloading
  • Establish a preventive maintenance schedule for cleaning, lubrication, and inspection of die surfaces and mounting components

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems ANSI B11.4 - Safety requirements for shears DIN 8580 - Manufacturing processes classification
Manufacturing Precision
  • Bore diameter: +/-0.02mm
  • Parallelism between die faces: 0.1mm
Quality Inspection
  • Dimensional verification with CMM
  • Hardness testing (Rockwell C scale)

Factories Producing V-Die Set

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are V-die sets typically made from for metal fabrication?

V-die sets are commonly manufactured from tool steels like D2 or A2 for durability, alloy steel for strength, and may include carbide inserts in high-wear areas to extend tool life in demanding metal fabrication applications.

How does a V-die set achieve precise bends in sheet metal?

The V-die set works as a matched pair where the upper punch forces metal sheet into the lower die's V-shaped cavity. The precise angle and radius of the die determine the bend angle, while proper alignment ensures consistent, accurate bends across production runs.

What factors should be considered when selecting a V-die set for press brake operations?

Key considerations include material thickness and type being bent, required bend angles and radii, press brake tonnage capacity, production volume, and whether standard or custom tooling is needed. Proper die selection prevents material springback and ensures dimensional accuracy in fabricated metal products.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Fabricated Metal Product Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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