---
title: "Arm Structure"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ARM_STRUCTURE"
  data_integrity_hash: "f80a84ed298fdb5d69dc2b2fff8b5009"
  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:ARM_STRUCTURE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/arm-structure.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/arm-structure"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-1500 N·m bending moment, 0-5000 N axial load, -40°C to 85°C temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 250
    unit: "MPa"
    consequence: "Plastic deformation due to von Mises yield criterion, Euler buckling instability, Paris' law crack propagation (C=1.5e-12, m=3.0)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Resonant vibration at 120 Hz matching natural frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dynamic vibration absorber tuned to 115 Hz with damping ratio ζ=0.15"
  - node_2:
      trigger: "Corrosive environment with chloride concentration &gt; 500 ppm"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "316L stainless steel cladding with 2.5 mm thickness, cathodic protection at -0.85 V vs SCE"
bom_nodes:
  main-beam:
    type: "component"
    urn: "URN:CNFX:ME:MAIN_BEAM"
    interface_type: "physical-logic-coupled"
  mounting-flange:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_FLANGE"
    interface_type: "physical-logic-coupled"
  reinforcement-ribs:
    type: "component"
    urn: "URN:CNFX:ME:REINFORCEMENT_RIBS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASME B5.54-2005 - METHODS FOR PERFORMANCE EVALUATION OF COMPUTER NUMERICALLY CONTROLLED MACHINING CENTERS"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN 1090-1:2018 - EXECUTION OF STEEL STRUCTURES AND ALUMINIUM STRUCTURES"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/arm-structure.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "4264288046dfa0a85f15d8186b026fab1e47e303b351a8545b5310c77e26d1bb"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Arm Structure

## 1. Technical Definition
The structural framework of a tool arm that provides support, rigidity, and mounting points for other components.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-1500 N·m bending moment, 0-5000 N axial load, -40°C to 85°C temperature**. Failure boundary: **Yield strength exceeded at 250 MPa von Mises stress, buckling at 3500 N axial load with slenderness ratio &gt; 100, fatigue failure at 10^7 cycles with stress amplitude &gt; 150 MPa**, Mechanism: **Plastic deformation due to von Mises yield criterion, Euler buckling instability, Paris' law crack propagation (C=1.5e-12, m=3.0)**.

### 2.1 Analytical Physics Model
Governed by the **Frame Structural Deflection Analysis**:

> **Primary Equation**: $\delta = \frac{5 q L^4}{384 E I}$  
> **Engineering Impact**: Ensures structural stability for multi-stage machines.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| q | Uniform Load | Engineering Constant |
| E | Elastic Modulus | Engineering Constant |
| I | Moment of Inertia | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Resonant vibration at 120 Hz matching natural frequency | 8 | Fatigue crack initiation at stress concentrators (weld joints) | Dynamic vibration absorber tuned to 115 Hz with damping ratio ζ=0.15 |
| Corrosive environment with chloride concentration &gt; 500 ppm | 8 | Stress corrosion cracking at tensile stress &gt; 100 MPa | 316L stainless steel cladding with 2.5 mm thickness, cathodic protection at -0.85 V vs SCE |

## 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**: **CNC Machining Center**, **Welding Robot System**, **Coordinate Measuring Machine**  
**Downstream Applications**: Industrial Robotic Arms, Construction Equipment Booms, Agricultural Machinery Linkages  

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

### Q: What materials are available for the Arm Structure?
**A**: Our Arm Structure is available in Aluminum Alloy for lightweight applications, Steel for maximum durability, and Carbon Fiber Composite for high strength-to-weight ratio requirements.

### Q: What components are included in the Arm Structure BOM?
**A**: The Bill of Materials includes the Main Beam for primary support, Mounting Flange for secure attachment, and Reinforcement Ribs for enhanced rigidity and load distribution.

### Q: How does the Arm Structure improve machinery performance?
**A**: The Arm Structure provides critical support and rigidity to tool arms, reducing vibration, maintaining precision alignment, and offering reliable mounting points for other components in industrial applications.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- ANSI/ASME B5.54-2005 - METHODS FOR PERFORMANCE EVALUATION OF COMPUTER NUMERICALLY CONTROLLED MACHINING CENTERS
- DIN EN 1090-1:2018 - EXECUTION OF STEEL STRUCTURES AND ALUMINIUM STRUCTURES

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Arm Structure](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/arm-structure)**

### 🌐 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**: ARM_STRUCTURE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 1f6ff057
