Integrated Robot Wrist Tool Coupling With Fewer Connection Parts

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Solution Overview

Problem

Existing solutions for connecting an operating unit to a robot arm are cumbersome and require multiple components, leading to increased weight, dimensions, and production costs.

Innovation Solution

The operating unit features a connection member integrated into its supporting structure, which allows for a direct and simplified connection to the tool-change device on the robot arm, reducing the number of components needed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a separate first annular body is used to connect the operating unit to the robot arm, then the connection function is achieved, but the number of components increases, leading to increased weight, dimensions, and production costs

Engineering Contradiction:
Improvenumber of componentsVSAvoidweight of connection system
Core Design Contradiction:
Device complexityVSWeight of moving object

Solution Approach 1:

The patent merges the connection member with the supporting structure of the operating unit into a single integrated component. The connection member is formed as an integral part of the supporting structure, eliminating the need for separate first and second annular bodies. This integration directly reduces the number of components, decreases weight, and simplifies the overall connection system while maintaining all necessary connection and supply functions.

Inventive Principle:
Principle #5Merging (Combining)

2Device complexity

If a separate first annular body is used to connect the operating unit to the robot arm, then the connection function is achieved, but the number of components increases, leading to increased dimensions

Engineering Contradiction:
Improvenumber of componentsVSAvoidoverall dimensions of connection system
Core Design Contradiction:
Device complexityVSVolume of moving object

Solution Approach 1:

The connection member is integrated into the supporting structure, combining multiple functions (connection, support, and supply routing) into a single compact unit. This eliminates the need for separate annular bodies and reduces the overall volume occupied by the connection system, while still providing all necessary connection points and supply pathways.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If multiple separate components are used for connection, then the connection function is achieved, but production costs increase

Engineering Contradiction:
Improvenumber of componentsVSAvoidproduction cost
Core Design Contradiction:
Device complexityVSEase of manufacture

Solution Approach 1:

The integration of the connection member with the supporting structure reduces the number of parts that need to be manufactured, assembled, and quality-checked. This single integrated component approach simplifies the manufacturing process, reduces assembly steps, and lowers production costs while maintaining all necessary connection and supply functions.

Inventive Principle:
Principle #5Merging (Combining)

4Adaptability or versatility

If a separate first annular body is used for connection, then the dual function of fixing and connecting supplies is achieved, but the device complexity increases

Engineering Contradiction:
Improvedual function capabilityVSAvoidnumber of components
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The integrated connection member is designed to perform multiple functions simultaneously: it provides mechanical connection between the operating unit and robot arm, and also serves as a conduit for electrical, hydraulic, and pneumatic supplies. This multi-functional design eliminates the need for separate connection and supply components, reducing overall device complexity while maintaining full dual functionality.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4530034A1Operating unit with integrated tool-change device
Publication Date: 2025.04.02 COM IMP EX DI ELIO STROBIETTO
  • EP4530034A1 patent drawingFigure 1
  • EP4530034A1 patent drawingFigure 2
  • EP4530034A1 patent drawingFigure 3

AI summary

Described herein is an operating unit (10) that can be connected to the wrist of a robot arm comprising: - a tool (12), and - a supporting structure (14) carrying said tool, characterized in that the supporting structure (14) comprises a connection member (26) via which said operating unit (10) can be operatively connected in a releasable way to said wrist of the robot arm, wherein the connection member (26) has an opening (30) on an end wall (32) thereof, which is configured to receive a head (101) of a connection device associated to the wrist of the robot arm, wherein the connection member (26) comprises an internal seat (28) accessible through said opening (30) and configured to receive blocking elements (102) carried by said head (101) so as to enable fixing of the operating unit (10) to said wrist of the robot arm.