---
title: "Articulated Arm Sections"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ARTICULATED_ARM_SECTIONS"
  data_integrity_hash: "74a7a828ddaee65c7b139049e5629657"
  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:ARTICULATED_ARM_SECTIONS"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/articulated-arm-sections.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/articulated-arm-sections"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-180 degrees angular deflection per joint, 0.5-2.0 m/s linear extension/retraction velocity, 0-150 N·m torque per joint"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 185
    unit: "degrees"
    consequence: "Mechanical interference at excessive angles causes plastic deformation of aluminum 6061-T6 segments (ultimate tensile strength 310 MPa). Torque overload initiates yielding in AISI 4140 steel joint pins (shear yield strength 240 MPa). Velocity-induced vibration at 2.2 m/s excites the 8.5 Hz natural frequency of the 2.5 kg/m arm segments (calculated from Euler-Bernoulli beam theory with E=69 GPa for aluminum), leading to fatigue failure at stress concentrations near joint interfaces."
fmea_matrix_quantitative:
  - node_1:
      trigger: "Cyclic loading at 8.5 Hz vibration frequency exceeding 1e6 cycles (aluminum 6061-T6 fatigue limit at 97 MPa)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Design joint interfaces with radiused fillets (minimum 3 mm radius) to reduce stress concentration factor below 1.8, implement vibration damping using viscoelastic polymer inserts (loss factor &gt;0.3) at joint connections"
  - node_2:
      trigger: "Corrosive fume exposure (pH&lt;4 acidic or pH&gt;10 alkaline) exceeding 1000 hours continuous operation"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Apply 50-75 μm thick anodized coating (Type III hardcoat) with sealing in nickel acetate solution, design drainage channels (minimum 3° slope) to prevent liquid accumulation in joint recesses"
bom_nodes:
  joint-housing:
    type: "part"
    urn: "URN:CNFX:ME:JOINT_HOUSING"
    interface_type: "physical-logic-coupled"
  pivot-pinbearing:
    type: "component"
    urn: "URN:CNFX:ME:PIVOT_PINBEARING"
    interface_type: "physical-logic-coupled"
  locking-mechanism:
    type: "part"
    urn: "URN:CNFX:ME:LOCKING_MECHANISM"
    interface_type: "physical-logic-coupled"
  internal-ducting:
    type: "component"
    urn: "URN:CNFX:ME:INTERNAL_DUCTING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9283:1998 - MANIPULATING INDUSTRIAL ROBOTS - PERFORMANCE CRITERIA AND RELATED TEST METHODS"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN ISO 10218-1:2011 - ROBOTS AND ROBOTIC DEVICES - SAFETY REQUIREMENTS FOR INDUSTRIAL ROBOTS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/articulated-arm-sections.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "da8fb14f103cf058410babb449d7a57fb96c69a4b0bed8df784090cd481d0a59"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Articulated Arm Sections

## 1. Technical Definition
Segmented components that form the flexible arm structure of extraction hoods/arms, enabling adjustable positioning for fume capture.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-180 degrees angular deflection per joint, 0.5-2.0 m/s linear extension/retraction velocity, 0-150 N·m torque per joint**. Failure boundary: **Joint deflection exceeding 185 degrees causes mechanical interference, torque exceeding 175 N·m yields joint pins (AISI 4140 steel, yield strength 415 MPa), extension velocity exceeding 2.2 m/s induces harmonic vibration at 8.5 Hz (natural frequency of arm segments)**, Mechanism: **Mechanical interference at excessive angles causes plastic deformation of aluminum 6061-T6 segments (ultimate tensile strength 310 MPa). Torque overload initiates yielding in AISI 4140 steel joint pins (shear yield strength 240 MPa). Velocity-induced vibration at 2.2 m/s excites the 8.5 Hz natural frequency of the 2.5 kg/m arm segments (calculated from Euler-Bernoulli beam theory with E=69 GPa for aluminum), leading to fatigue failure at stress concentrations near joint interfaces.**.

### 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 |
| :--- | :--- | :--- | :--- |
| Cyclic loading at 8.5 Hz vibration frequency exceeding 1e6 cycles (aluminum 6061-T6 fatigue limit at 97 MPa) | 8 | Fatigue crack propagation at joint-pin interface, leading to catastrophic arm section separation | Design joint interfaces with radiused fillets (minimum 3 mm radius) to reduce stress concentration factor below 1.8, implement vibration damping using viscoelastic polymer inserts (loss factor &gt;0.3) at joint connections |
| Corrosive fume exposure (pH&lt;4 acidic or pH&gt;10 alkaline) exceeding 1000 hours continuous operation | 8 | Stress corrosion cracking in aluminum 6061-T6 arm segments, particularly at welded joints (reduced corrosion resistance in HAZ) | Apply 50-75 μm thick anodized coating (Type III hardcoat) with sealing in nickel acetate solution, design drainage channels (minimum 3° slope) to prevent liquid accumulation in joint recesses |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Joint Housing](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/joint-housing.md) `(Standalone System)`
- [Locking Mechanism](https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/locking-mechanism.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Industrial Fume Extraction System**, **Positioning Control Panel**, **Compressed Air Supply Unit**  
**Downstream Applications**: Laboratory Fume Hoods, Industrial Welding Stations, Chemical Process Ventilation Arms  

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

### Q: What materials are available for articulated arm sections in extraction systems?
**A**: Our articulated arm sections are manufactured from durable materials including stainless steel for corrosion resistance, galvanized steel for cost-effective protection, and aluminum alloy for lightweight applications.

### Q: How do articulated arm sections improve fume capture efficiency?
**A**: The segmented design with pivot joints allows precise positioning of extraction hoods, enabling operators to place the capture point closer to fume sources, significantly improving capture efficiency while maintaining flexibility.

### Q: What components are included in the articulated arm section assembly?
**A**: Each articulated arm section includes internal ducting for airflow, joint housing for structural integrity, locking mechanisms for secure positioning, and pivot pins/bearings for smooth articulation movement.

## 6. Manufacturing Compliance
- ISO 9283:1998 - MANIPULATING INDUSTRIAL ROBOTS - PERFORMANCE CRITERIA AND RELATED TEST METHODS
- DIN EN ISO 10218-1:2011 - ROBOTS AND ROBOTIC DEVICES - SAFETY REQUIREMENTS FOR INDUSTRIAL ROBOTS

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

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: ARTICULATED_ARM_SECTIONS | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 9037050f
