Adaptable Grasping Device with Biasing Locking Mechanism

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Solution Overview

Problem

Existing end-of-arm tooling devices for exo-skeletons are limited in versatility due to their design specificity, requiring multiple devices for handling objects of different shapes and sizes, and are inefficient when power is lost, disrupting manufacturing operations.

Innovation Solution

A mechanical device with opposed frame members and an actuator assembly, featuring a locking mechanism and biasing devices, allows for adaptable grasping and holding of objects, enabling efficient movement even without continuous power supply.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If end-of-arm tooling devices are specially designed for certain items, then they can effectively handle those specific objects, but they cannot handle objects with different shapes and sizes, requiring multiple devices and increasing operational costs

Engineering Contradiction:
Improvehandling effectivenessVSAvoidobject configuration adaptability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The end-of-arm tooling device is designed with a universal gripping mechanism that can handle objects of various shapes and sizes. The opposed frame members with fingers and adjustable locking members create a adaptable grasping structure that can accommodate different object configurations, eliminating the need for multiple specialized devices.

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

Solution Approach 2:

The device incorporates movable and adjustable components including slidably coupled frame members, adjustable locking members with inclined surfaces, and biasing devices that allow the gripping structure to dynamically adapt to different object shapes and sizes, providing both specificity and versatility.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If end-of-arm tooling devices are actuated by power sources, then they can be controlled to handle objects, but when power is lost, the objects cannot be moved efficiently, disrupting manufacturing operations

Engineering Contradiction:
Improvecontrolled handlingVSAvoidoperation continuity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The device incorporates biasing devices such as springs that provide automatic mechanical assistance. When power is available, the actuator controls the gripping action; when power is lost, the biasing devices automatically engage to maintain or adjust the gripping force, allowing the device to serve itself and continue operation without external power.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The biasing devices are pre-loaded with mechanical energy to compensate for potential power loss. This beforehand cushioning ensures that if power fails during operation, the stored mechanical energy in the biasing devices can maintain the gripping function and allow continued handling of objects.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Adaptability or versatility

If multiple end-of-arm tooling devices are kept in stock for different objects, then all object types can be handled, but operational costs increase

Engineering Contradiction:
Improveobject type coverageVSAvoidoperational cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The device is designed as a universal end-of-arm tooling system that can handle multiple object types with a single device. The adjustable gripping mechanism, opposed frame members, and configurable locking members allow one device to replace multiple specialized devices, reducing inventory requirements and operational costs.

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

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

The device enables efficient handling and movement of heavy objects across various configurations and sizes, maintaining functionality even in power-limited environments, reducing operational costs and disruptions.

Implementation Method 1

a first biasing device engages the opposed frame members

Methodology Applied
Scientific EffectSpring: Spring

Implementation Method 2

The locking member includes an inclined surface adapted to engage the at least one lateral protrusion

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Data Source

PatentUS12109687B2Mechanical device for grasping objects
Publication Date: 2024.10.08 FORD GLOBAL TECH LLC
  • US12109687B2 patent drawing
  • US12109687B2 patent drawing
  • US12109687B2 patent drawing

AI summary

A mechanical device includes opposed frame members and an actuator assembly. The opposed frame members are slidably coupled to each other in a longitudinal direction. The opposed frame members are biased away from each other. The actuator assembly is mounted to the opposed frame members and includes an actuator and a locking member. The actuator includes an engagement pad and at least one lateral protrusion. The actuator being slidably disposed relative to one of the opposed frame members along the longitudinal direction. The locking member is kinematically coupled to the actuator and slidably disposed relative to the other opposed frame member. The locking member includes an inclined surface adapted to engage the at least one lateral protrusion.