INDUSTRY COMPONENT

Arm Body / Structure

The structural framework of a tool exchange arm that provides rigidity, support, and mounting points for all other components.

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Component Specifications

Definition
The arm body or structure is the primary load-bearing component of a tool exchange arm in industrial automation systems. It serves as the mechanical skeleton that houses and supports the arm's internal mechanisms, including motors, gears, bearings, and the tool interface. This component determines the arm's reach, payload capacity, stiffness, and overall durability. It is engineered to withstand repetitive motion cycles, mechanical stresses, and environmental conditions while maintaining precise alignment for accurate tool positioning.
Working Principle
The arm body functions as a rigid structural member that transfers forces from the drive system to the tool interface. It provides a stable platform for mounting all internal components while maintaining geometric accuracy through precision machining and material selection. The structure's design minimizes deflection under load to ensure repeatable positioning accuracy during tool exchange operations.
Materials
Typically manufactured from high-strength aluminum alloys (e.g., 6061-T6, 7075-T6) for lightweight applications, or steel alloys (e.g., AISI 4140, stainless steel 304/316) for heavy-duty applications. May include composite materials or cast iron for specific requirements.
Technical Parameters
  • Reach 500-3000 mm
  • Stiffness 50-500 N/μm
  • Repeatability ±0.01-0.1 mm
  • Weight Capacity 5-500 kg
  • Protection Rating IP54-IP67
  • Operating Temperature -10°C to 60°C
Standards
ISO 9283, ISO 10218-1, DIN EN ISO 8373, ANSI/RIA R15.06

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Arm Body / Structure.

tool exchange arm body robotic arm structure automation component industrial arm framework tool changer structure CNC arm body robotic manipulator frame Arm Body / Structure Arm Body / Structure in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Tool Exchange Arm

Mechanical arm component of an Automatic Tool Changer (ATC) responsible for physically transferring tools between the machine spindle and tool magazine.

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Engineering Analysis

Risks & Mitigation
  • Structural fatigue from cyclic loading
  • Corrosion in harsh environments
  • Thermal expansion affecting accuracy
  • Impact damage from collisions
  • Misalignment due to wear or improper installation
FMEA Triads
Trigger: Material fatigue from repetitive stress cycles
Failure: Crack formation leading to structural failure
Mitigation: Regular non-destructive testing, proper load calculations, and using materials with appropriate fatigue strength
Trigger: Corrosive environment exposure
Failure: Material degradation and reduced structural integrity
Mitigation: Use corrosion-resistant materials, protective coatings, and environmental controls
Trigger: Improper installation or alignment
Failure: Reduced accuracy and premature wear of components
Mitigation: Follow precise installation procedures, use alignment tools, and perform regular calibration checks

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Geometric tolerances per ISO 1101, dimensional tolerances IT6-IT8, surface finish Ra 0.8-3.2 μm
Test Method
Dimensional inspection with CMM, load testing per ISO 9283, vibration analysis, finite element analysis validation

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of the arm body in a tool exchange system?

The arm body provides the structural integrity and mounting platform for all other components, ensuring precise alignment and stable operation during tool exchange cycles.

How does material selection affect arm body performance?

Material selection determines weight, stiffness, corrosion resistance, and thermal stability. Aluminum offers lightweight solutions, while steel provides higher strength and durability for heavy payloads.

What maintenance is required for the arm body structure?

Regular inspection for cracks, deformation, or corrosion; cleaning of mounting surfaces; verification of alignment; and torque checks on fasteners according to manufacturer specifications.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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