---
title: "Bed"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:BED"
  data_integrity_hash: "5ed1ac8366af87948bbcff1d1ee417c3"
  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:BED"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/bed.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/bed"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.0 mm maximum deflection under 10 kN cutting force"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 3.0
    unit: "mm"
    consequence: "Exceeding yield strength of cast iron (250 MPa) or thermal expansion mismatch (11.8 μm/m·°C for cast iron vs 23.6 μm/m·°C for steel ways)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Resonant vibration at 85-120 Hz matching machine natural frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Damping coefficient optimization to ζ &gt; 0.15 through constrained layer damping and mass tuning"
  - node_2:
      trigger: "Thermal gradient exceeding 15°C across bed length during 8-hour operation"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Symmetrical heat source distribution and forced convection cooling maintaining ΔT &lt; 5°C"
bom_nodes:
  guideways:
    type: "component"
    urn: "URN:CNFX:ME:GUIDEWAYS"
    interface_type: "physical-logic-coupled"
  ribswebbing:
    type: "component"
    urn: "URN:CNFX:ME:RIBSWEBBING"
    interface_type: "physical-logic-coupled"
  mounting-surfaces:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_SURFACES"
    interface_type: "physical-logic-coupled"
  chip-trayguard-mounting-points:
    type: "component"
    urn: "URN:CNFX:ME:CHIP_TRAYGUARD_MOUNTING_POINTS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/bed.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a2d7b50f8aeaf14c31b80d6ba267f923d27c5dbe203b0e68538ccdfc8d2b13ef"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Bed

## 1. Technical Definition
The main structural foundation of a CNC lathe that provides rigidity, stability, and precision alignment for all moving components.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.0 mm maximum deflection under 10 kN cutting force**. Failure boundary: **3.0 mm permanent deformation at 15 kN static load or 0.02 mm/m thermal distortion gradient**, Mechanism: **Exceeding yield strength of cast iron (250 MPa) or thermal expansion mismatch (11.8 μm/m·°C for cast iron vs 23.6 μm/m·°C for steel ways)**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Resonant vibration at 85-120 Hz matching machine natural frequency | 8 | Surface finish degradation to Ra &gt; 3.2 μm and dimensional tolerance loss &gt; 0.05 mm | Damping coefficient optimization to ζ &gt; 0.15 through constrained layer damping and mass tuning |
| Thermal gradient exceeding 15°C across bed length during 8-hour operation | 8 | Geometric accuracy loss with straightness error &gt; 0.01 mm/300 mm | Symmetrical heat source distribution and forced convection cooling maintaining ΔT &lt; 5°C |

## 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 Lathe Control System**, **Coolant Filtration System**, **Automatic Bar Feeder**  
**Downstream Applications**: Precision Shafts, Automotive Engine Components, Aerospace Fasteners  

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

### Q: What materials are best for CNC lathe beds?
**A**: Cast iron (gray or ductile) offers superior vibration damping and thermal stability, while welded steel provides high strength-to-weight ratio and design flexibility for custom applications.

### Q: How does bed design affect CNC lathe precision?
**A**: The bed's rigidity, guideway alignment, and mounting surfaces directly impact machining accuracy by minimizing deflection, maintaining component alignment, and ensuring stable tool and workpiece positioning.

### Q: What features should I look for in a quality lathe bed?
**A**: Look for reinforced ribbing/webbing for stiffness, precision-ground guideways, integrated chip management features, and proper mounting points for guards and accessories to ensure long-term accuracy and durability.

## 6. Manufacturing Compliance

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

### 🌐 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**: BED | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 001cbc05
