---
title: "Back Gauge"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:BACK_GAUGE"
  data_integrity_hash: "50a4a5e273e6d56015efbcad679a4acf"
  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:BACK_GAUGE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/back-gauge.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/back-gauge"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-0.5 mm positioning accuracy, 0-1000 mm travel range, 0.5-2.0 m/s positioning speed"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 0.1
    unit: "mm"
    consequence: "Servo motor cogging torque ripple at 5-15% of rated torque causing positioning inaccuracy, ball screw thermal expansion of 12 μm/m·°C at 40°C temperature rise, encoder interpolation error at 0.001 mm resolution threshold"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Servo drive current overshoot exceeding 150% rated current for 100 ms"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement current limiting circuit with 120% threshold and 50 ms response time"
  - node_2:
      trigger: "Linear guideway contamination with ISO 4406 18/16/13 particle count"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install IP65-rated bellows seal with 0.3 μm filtration efficiency"
bom_nodes:
  gauge-finger:
    type: "component"
    urn: "URN:CNFX:ME:GAUGE_FINGER"
    interface_type: "physical-logic-coupled"
  guide-rail:
    type: "component"
    urn: "URN:CNFX:ME:GUIDE_RAIL"
    interface_type: "physical-logic-coupled"
  drive-mechanism:
    type: "part"
    urn: "URN:CNFX:ME:DRIVE_MECHANISM"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - MACHINERY DIRECTIVE 2006/42/EC"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/back-gauge.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "138be0b81d97ed703afc4d1d10b18f85f3c60c8a2a9d742f3aab7235eb498274"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Back Gauge

## 1. Technical Definition
A positioning device on a hydraulic press brake that controls the bending position of sheet metal.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-0.5 mm positioning accuracy, 0-1000 mm travel range, 0.5-2.0 m/s positioning speed**. Failure boundary: **Positioning error exceeding ±0.1 mm tolerance, backlash exceeding 0.05 mm, servo motor torque dropping below 80% rated value**, Mechanism: **Servo motor cogging torque ripple at 5-15% of rated torque causing positioning inaccuracy, ball screw thermal expansion of 12 μm/m·°C at 40°C temperature rise, encoder interpolation error at 0.001 mm resolution threshold**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Servo drive current overshoot exceeding 150% rated current for 100 ms | 8 | Servo motor demagnetization with 30% torque loss | Implement current limiting circuit with 120% threshold and 50 ms response time |
| Linear guideway contamination with ISO 4406 18/16/13 particle count | 8 | Ball screw jamming at 10 N·m static friction torque | Install IP65-rated bellows seal with 0.3 μm filtration efficiency |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Drive Mechanism](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/drive-mechanism.md) `(Standalone System)`

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

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

### Q: What is the primary function of a back gauge in machinery manufacturing?
**A**: A back gauge precisely positions sheet metal on a hydraulic press brake to control bending location, ensuring accurate and repeatable bends in metal fabrication processes.

### Q: What materials are used in back gauge construction and why?
**A**: Back gauges are typically constructed from steel for structural durability and aluminum alloy for lightweight moving components, providing optimal balance between strength and precision movement.

### Q: How do the drive mechanism and guide rail components work together?
**A**: The drive mechanism moves the gauge finger along the guide rail with precision, allowing controlled positioning of sheet metal for consistent bending operations on press brakes.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - MACHINERY DIRECTIVE 2006/42/EC

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Back Gauge](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/back-gauge)**

### 🌐 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**: BACK_GAUGE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 12a0c372
