Dynamic Robotic End Effector Exchange for Mixed-Object Grasping
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Solution Overview
Problem
Existing end effectors for robotic systems face limitations in securely grasping objects of varying sizes, weights, and materials, especially during rapid movement, and lack the ability to adapt to different objects without human intervention.
Innovation Solution
A programmable motion system with a dynamic end effector system that includes a plurality of acquisition units, such as vacuum cups, which can be automatically selected and coupled to an end effector without human activation, allowing for secure grasping and movement of diverse objects through a coupling system and exchange station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-type end effector is used, then the device complexity is reduced, but the adaptability to different objects deteriorates
Solution Approach 1:
The end effector system is segmented into multiple interchangeable acquisition units, each designed for specific object types. The system divides the grasping function into specialized modules (vacuum cups for smooth surfaces, mechanical grippers for irregular objects, etc.), allowing the robot to select appropriate segments based on object characteristics without requiring a completely different end effector for each object type.
Solution Approach 2:
The end effector system achieves universality through a standardized mounting interface that allows multiple specialized acquisition units to be attached to a single robotic manipulator. This multi-functional design enables one base end effector structure to perform multiple grasping functions by simply changing the acquisition unit, combining specialization with system-wide versatility.
2Adaptability or versatility
If multiple specialized end effectors are provided for different objects, then the adaptability improves, but the device complexity increases
Solution Approach 1:
Multiple specialized acquisition units are merged into a single interchangeable module that attaches to one robotic end effector base. Instead of having separate robotic arms for different object types, the system combines multiple grasping specialists into one platform, reducing the number of robotic systems needed while maintaining adaptability across object types.
Solution Approach 2:
The end effector system transitions from a static, fixed-function design to a dynamic, reconfigurable system. Acquisition units can be dynamically changed during operation based on object identification, allowing the system to adapt its grasping mechanism in real-time without requiring multiple permanently installed end effectors.
3Extent of automation
If manual intervention is required for end effector selection, then the automation level is reduced, but the reliability of object-grasping increases
Solution Approach 1:
The system incorporates feedback loops where object identification data (from vision systems or sensors) automatically triggers the selection and attachment of the appropriate acquisition unit. This closed-loop control ensures that the correct grasping mechanism is selected based on real-time object characteristics, maintaining both automation and reliability through systematic decision-making rather than manual judgment.
Solution Approach 2:
The end effector system performs self-service by automatically selecting, attaching, and configuring the appropriate acquisition unit based on object identification. The system serves itself by making the selection decision and executing the changeover without human intervention, while the pre-designed specialized units ensure reliable grasping for their intended object types.
4Ease of operation
If acquisition units are made accessible at an exchange station, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The exchange station replaces manual mechanical manipulation with automated positioning systems. Instead of requiring operators to physically handle and attach acquisition units, the system uses automated mechanisms (such as robotic pick-and-place or magnetic attachment systems) to transfer units between the exchange station and the end effector, reducing operational complexity while maintaining ease of unit replacement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables reliable and efficient grasping and movement of a wide variety of objects, improving the system's adaptability and automation in object processing tasks like sortation and order fulfillment by automatically selecting the appropriate acquisition units based on object identification.
Implementation Method 1
Many end effectors employ vacuum pressure for acquiring and securing objects for transport and/or subsequent operations by articulated arms.
Data Source
AI summary
A programmable motion system is disclosed that includes a dynamic end effector system. The dynamic end effector system includes a plurality of acquisition units that are provided at an exchange station within an area accessible by the programmable motion device, and a coupling system for coupling any of the plurality of acquisition units to an end effector of the programmable motion device such that any of the acquisition units may be automatically selected from the exchange station and used by the programmable motion device without requiring any activation or actuation by the exchange station and without requiring any intervention by a human.