---
title: "Positioning Arm"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:POSITIONING_ARM"
  data_integrity_hash: "8db143202afe252dd7605d02fea8023a"
  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:POSITIONING_ARM"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/positioning-arm.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/positioning-arm"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-2.0 mm positioning accuracy, 0.5-5.0 N·m torque capacity, 0.01-0.5 m/s linear velocity"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 0.25
    unit: "mm"
    consequence: "Backlash accumulation from gear train wear (ISO 1328-1 Class 7 tolerance degradation), thermal expansion of aluminum alloy arm segments (α=23.1×10⁻⁶/°C), ball screw preload loss below 5% of dynamic load rating, servo encoder resolution degradation below 16-bit precision"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Harmonic vibration at 120 Hz resonance frequency from conveyor system"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install tuned mass damper with 2.5 kg mass and 500 N·s/m damping at arm base, increase structural stiffness to 1.8×10⁸ N/m"
  - node_2:
      trigger: "Servo motor encoder contamination with 5 μm particulate accumulation"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement IP67-rated encoder housing with 0.3 bar positive air purge, install redundant incremental encoder with 2048 PPR resolution"
bom_nodes:
  actuator:
    type: "part"
    urn: "URN:CNFX:ME:ACTUATOR"
    interface_type: "physical-logic-coupled"
  arm-linkage:
    type: "component"
    urn: "URN:CNFX:ME:ARM_LINKAGE"
    interface_type: "physical-logic-coupled"
  end-effector:
    type: "part"
    urn: "URN:CNFX:ME:END_EFFECTOR"
    interface_type: "physical-logic-coupled"
  mounting-bracket:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_BRACKET"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/positioning-arm.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a3b09bd8a678627da9cabdc94a5a2aaf86aa12223de66197263a273343c2aeff"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Positioning Arm

## 1. Technical Definition
A mechanical arm component that precisely positions and manipulates lids within an automated feeding system.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-2.0 mm positioning accuracy, 0.5-5.0 N·m torque capacity, 0.01-0.5 m/s linear velocity**. Failure boundary: **Positioning error exceeds ±0.25 mm tolerance, backlash exceeds 0.05 mm, servo motor temperature exceeds 85°C, bearing vibration amplitude exceeds 0.8 mm/s RMS**, Mechanism: **Backlash accumulation from gear train wear (ISO 1328-1 Class 7 tolerance degradation), thermal expansion of aluminum alloy arm segments (α=23.1×10⁻⁶/°C), ball screw preload loss below 5% of dynamic load rating, servo encoder resolution degradation below 16-bit precision**.

### 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 |
| :--- | :--- | :--- | :--- |
| Harmonic vibration at 120 Hz resonance frequency from conveyor system | 8 | Positioning accuracy degradation to ±0.4 mm due to structural resonance | Install tuned mass damper with 2.5 kg mass and 500 N·s/m damping at arm base, increase structural stiffness to 1.8×10⁸ N/m |
| Servo motor encoder contamination with 5 μm particulate accumulation | 8 | Absolute position loss requiring manual homing every 8 hours | Implement IP67-rated encoder housing with 0.3 bar positive air purge, install redundant incremental encoder with 2048 PPR resolution |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Actuator](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/actuator.md) `(Standalone System)`
- [End Effector](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/end-effector.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Automated Conveyor System**, **Programmable Logic Controller (PLC)**, **Vision Inspection System**  
**Downstream Applications**: Pharmaceutical Packaging Lines, Food Processing Equipment, Automotive Assembly Systems  

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

### Q: What materials are used in this positioning arm and why?
**A**: This positioning arm is constructed from aluminum alloy for lightweight strength and stainless steel for corrosion resistance, ensuring durability and precision in industrial environments.

### Q: How does this positioning arm integrate with automated feeding systems?
**A**: The positioning arm connects via its mounting bracket and actuator to precisely manipulate lids within automated feeding systems, with the end effector designed for secure handling.

### Q: What maintenance does this positioning arm require?
**A**: Regular inspection of the actuator and arm linkage components is recommended, with lubrication as needed. The stainless steel and aluminum alloy materials minimize corrosion-related maintenance.

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

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

### 🌐 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**: POSITIONING_ARM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 968ac07e
