---
title: "V-Die Set"
industry: "Fabricated Metal Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:V_DIE_SET"
  data_integrity_hash: "fcff97445f73fb5370a212bfbab2eb31"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:V_DIE_SET"
  data_source_uri: "https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/v-die-set.md"
  official_resource_url: "https://cnfx.com/industry/fabricated-metal-product-manufacturing/product/v-die-set"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "150-450 kN bending force, 0.5-12.0 mm sheet thickness, 30-120° bend angle"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 200
    unit: "MPa"
    consequence: "Hertzian contact stress exceeding 2,500 MPa at punch-die interface causing plastic deformation, abrasive wear from sheet metal sliding at 0.3-1.2 m/s velocity, cyclic bending fatigue at 10^6 cycles with stress amplitude of 800 MPa"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Misalignment exceeding 0.02 mm between punch and die centerlines"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Precision ground alignment pins with 0.005 mm tolerance, laser alignment system with 0.01 mm resolution"
  - node_2:
      trigger: "Work hardening of sheet metal exceeding 250 HV hardness"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Real-time angle measurement with 0.1° resolution, adaptive CNC control with 0.5° correction algorithm"
bom_nodes:
  lower-die-block:
    type: "component"
    urn: "URN:CNFX:ME:LOWER_DIE_BLOCK"
    interface_type: "physical-logic-coupled"
  upper-punch:
    type: "component"
    urn: "URN:CNFX:ME:UPPER_PUNCH"
    interface_type: "physical-logic-coupled"
  clamping-features:
    type: "component"
    urn: "URN:CNFX:ME:CLAMPING_FEATURES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/v-die-set.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "dc7a43f15000d872aae414ebbc3d7add73207546aaae9bbc594383813687c11a"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: V-Die Set

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

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **150-450 kN bending force, 0.5-12.0 mm sheet thickness, 30-120° bend angle**. Failure boundary: **Die material yield strength exceeded at 1,200 MPa for D2 tool steel, punch tip radius wear beyond 0.1 mm tolerance, die shoulder radius deformation beyond 0.05 mm**, Mechanism: **Hertzian contact stress exceeding 2,500 MPa at punch-die interface causing plastic deformation, abrasive wear from sheet metal sliding at 0.3-1.2 m/s velocity, cyclic bending fatigue at 10^6 cycles with stress amplitude of 800 MPa**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Misalignment exceeding 0.02 mm between punch and die centerlines | 8 | Asymmetric bending causing 0.5-2.0° angular deviation from target bend angle | Precision ground alignment pins with 0.005 mm tolerance, laser alignment system with 0.01 mm resolution |
| Work hardening of sheet metal exceeding 250 HV hardness | 8 | Springback deviation of 3-8° from target bend angle, requiring overbending compensation | Real-time angle measurement with 0.1° resolution, adaptive CNC control with 0.5° correction algorithm |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Press Brake**, **Sheet Metal Uncoiler**, **Laser Cutting Machine**  
**Downstream Applications**: Metal Enclosures, HVAC Ductwork, Automotive Body Panels  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are V-die sets typically made from for metal fabrication?
**A**: 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.

### Q: How does a V-die set achieve precise bends in sheet metal?
**A**: 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.

### Q: What factors should be considered when selecting a V-die set for press brake operations?
**A**: 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.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

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### 🛠️ Engineering Resource Access
🔗 **[Full Specification: V-Die Set](https://cnfx.com/industry/fabricated-metal-product-manufacturing/product/v-die-set)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: V_DIE_SET | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: fee03f16
