Robot Automatic Tool Changer

Jun 13, 2025

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The Robot Automatic Tool Changer (ATC) is a core component of industrial robots, allowing the robot to quickly switch end effectors (such as welding guns, grippers, sanders, etc.) without human intervention, achieving multi-functionality and greatly improving the flexibility of production lines. The core technology lies in mechanical locking + seamless switching of electrical/fluid signals.

 

In the Robot Automatic Tool Changer (ATC) system, various types of connectors are used to achieve fast and reliable transmission of power, signals, data and gas/fluid. The following are the main types of connectors that will be used:

 

Electrical connectors (Power & Signal)

 

1. Circular connectors

 

  • Common brands: Harting, Amphenol, Binder, LAPP EPIC, HIROSE
  • Commonly used for: transmission of control signals, power, etc.
  • Typical specifications: M8, M12, M23, 7/8", Push-Pull type

 

2. Rectangular Industrial Connectors

 

  • Such as: Harting Han series, TE Heavy Duty Connectors
  • Suitable for high current, complex combination (electricity + gas + light + data) interface

 

3. Hybrid Modules

 

  • Can integrate power, signal, Ethernet, optical fiber, etc. in the same module, often used in high-speed tool change systems

 

Data connector (Data Communication)

 

1. RJ45 Industrial Ethernet connector

  • Cat5e/Cat6A/Cat7
  • Metal shell, shielding, shockproof design (such as TE, Harting ix Industrial)

 

2. M12 X-coded connector

  • Used for 10G Ethernet communication, protection level IP67, commonly used in industrial automation and robot communication interface

M12 X code connector

3. Fiber Optic connector (Fiber Optic)

  • SC, LC, ST, etc., used for high-speed video/data transmission, especially suitable for robot vision system
  • Mostly used in high-end automatic gun change systems (such as collaborative robots used for visual guidance)

 

Pneumatic/Hydraulic connector (Pneumatic & Hydraulic)

 

Quick couplers (Quick Couplers)

  • Commonly used for compressed air, vacuum or coolant
  • Brands such as: Festo, SMC, Parker, Staubli
  • Usually integrated with electrical connectors on the gun change board

 

Special connectors and integrated modules


1. Tool Changer dedicated multifunctional module

 

  • For example: ATI, Schunk, Zimmer provide automatic gun change modules, support electrical, pneumatic, signal integration
  • The connector part is usually customized or uses standard modules (such as ATI's MC series, Schunk's EWS/EZS, etc.)

 

2. Signal/power spring pin (Spring Probe) interface

  • Used for wireless or automatic docking, plug-in and wear-free design
  • Mainly used for short-distance high-frequency contact interface (between the robot arm end and the tool)

 

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