INDUSTRY COMPONENT

Arm Body

The structural frame of a tool change arm that provides rigidity and houses internal mechanisms for automated tool switching in CNC machines.

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Component Specifications

Definition
The Arm Body is the primary structural component of a Tool Change Arm, engineered to withstand dynamic loads during high-speed tool exchange operations. It serves as the mounting platform for grippers, sensors, and drive mechanisms while maintaining precise alignment between the spindle and tool magazine. This component ensures vibration damping, thermal stability, and protection of internal components in industrial automation environments.
Working Principle
The Arm Body operates as a rigid lever system that rotates or extends between the machine spindle and tool storage. It transfers mechanical force from actuators while maintaining geometric accuracy through precision bearings and alignment features. During operation, it positions the tool gripper with micron-level repeatability, enabling rapid tool changes without manual intervention.
Materials
AISI 4140 alloy steel (hardened to 45-50 HRC) or aluminum 7075-T6 for lightweight applications. Surface treatment: Hard chrome plating (0.003-0.005" thickness) or nickel plating for corrosion resistance.
Technical Parameters
  • IP Rating IP54 minimum
  • Maximum Speed 2.5 m/s
  • Repeatability ±0.002 mm
  • Weight Capacity Up to 25 kg
  • Natural Frequency >120 Hz
  • Positioning Accuracy ±0.005 mm
  • Operating Temperature 0-50°C
Standards
ISO 9409-1, ISO 10791-7, DIN 69893

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Arm Body.

tool change arm body CNC automation component industrial arm structure machine tool changer robotic arm frame Arm Body Arm Body in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Tool Change Arm

A mechanical arm that physically transfers cutting tools between the tool magazine and the machine spindle in an automatic tool-changing system.

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Clamping Arm

A mechanical arm component of a positioning fixture that applies controlled clamping force to secure workpieces during manufacturing operations.

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Dancer Arm

A mechanical arm used in tension control systems to maintain consistent material tension during processing.

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Engineering Analysis

Risks & Mitigation
  • Fatigue cracking at stress concentration points
  • Thermal expansion affecting accuracy
  • Corrosion in humid environments
  • Bearing wear leading to positional drift
FMEA Triads
Trigger: Insufficient lubrication
Failure: Increased friction and premature bearing wear
Mitigation: Implement automatic lubrication systems with flow monitoring
Trigger: Vibration from unbalanced tools
Failure: Resonance leading to structural fatigue
Mitigation: Add vibration dampers and implement tool balancing verification
Trigger: Thermal gradients
Failure: Dimensional instability during extended operation
Mitigation: Use materials with low thermal expansion and incorporate temperature compensation algorithms

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Geometric tolerances per ISO 2768-mK, positional accuracy within 0.01mm over full travel
Test Method
Laser interferometer measurement for positional accuracy, modal analysis for vibration characteristics, load testing at 150% rated capacity

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 maintenance does the Arm Body require?

Regular inspection of mounting bolts (torque check every 500 hours), lubrication of bearing surfaces every 2000 hours, and alignment verification using laser measurement tools quarterly.

Can Arm Bodies be customized for different machines?

Yes, manufacturers typically offer custom mounting interfaces, lengths, and weight capacities to match specific CNC machine configurations and tool magazine layouts.

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.

Request Manufacturing Insight for Arm Body

Arm (Stick) Arm Body / Structure