Hook-Shaped Gripping Arms for Secure Object Handling
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Solution Overview
Problem
Existing gripping systems for objects, such as motor vehicle components and domestic appliances, lack the necessary flexibility and security to adapt to diverse shapes and sizes, often resulting in insecure grasping and limited process space during handling.
Innovation Solution
An apparatus with independently movable gripping arms equipped with hook-shaped tools, each rotatable 360 degrees and featuring a cutting edge, allows for precise orientation and secure engagement with objects by forming a form-fitting connection, enabling flexible and secure gripping of various shapes and sizes through a combination of pivotability, translational adjustment, and quick-change mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional gripping systems are used, then the structure is simple, but the gripping security and adaptability to diverse shapes and sizes are insufficient
Solution Approach 1:
The gripping system is divided into multiple independently controllable gripping arms (at least three), each capable of independent movement and positioning. This segmentation allows each arm to adapt to different portions of the object's surface, improving gripping security while maintaining manageable complexity through modular design
Solution Approach 2:
The gripping arms are equipped with multiple degrees of freedom including pivotable joints and translational adjustment mechanisms, enabling dynamic adaptation to various object shapes and sizes. The hook-shaped tools can rotate 360 degrees about their tool rotation axes, providing real-time adaptability to different surface contours
2Adaptability or versatility
If fixed gripping tools are used, then the device complexity is low, but the adaptability to different object orientations and surfaces is limited
Solution Approach 1:
Each hook-shaped gripping tool is mounted on an adjustment device that enables rotation about a tool rotation axis, allowing the tool orientation to be dynamically adjusted to match the local surface geometry of the object. This dynamic adaptability ensures secure engagement with diverse object contours without requiring completely different tools for each shape
Solution Approach 2:
The hook-shaped gripping tools are designed with universal adaptability through their rotational capability and form-fitting geometry, allowing a single tool design to effectively engage with various object shapes, sizes, and orientations. The cutting edge can engage with different surface types while the hollow portion adapts to different curvatures
3Measurement precision
If non-rotatable gripping tools are used, then the mechanism is simple, but the precision of orientation to object surfaces is insufficient
Solution Approach 1:
The hook-shaped gripping tools are mounted on adjustment devices that enable precise rotation about tool rotation axes. This rotational capability allows the cutting edge to be precisely oriented perpendicular to or at optimal angles relative to the object surface, achieving high orientation precision necessary for secure form-fitting engagement
Solution Approach 2:
The system incorporates detection devices that detect the object's position and orientation, providing feedback to the control device. This feedback enables automatic adjustment of the gripping tool orientation to achieve precise alignment with the object surface, eliminating the need for manual positioning while maintaining high precision
4Reliability
If fewer gripping arms are used, then the device complexity is reduced, but the gripping security and flexibility are compromised
Solution Approach 1:
The system employs at least three independently movable gripping arms, each capable of independent positioning and gripping actions. This segmentation provides stable triangular or polyhedral support geometry for the object, significantly improving gripping security compared to fewer arms while maintaining manageable complexity through independent control of each segment
Solution Approach 2:
Each gripping arm is equipped with multiple degrees of freedom including pivotable joints and translational adjustment capabilities, allowing independent adaptation to the object's geometry. This dynamic independence enables the system to securely grip diverse objects without requiring excessive numbers of arms, as each arm can autonomously position itself optimally
Data Source
AI summary
An apparatus for gripping an object includes a base element and at least three gripping arms which are mounted on the base element. The at least three gripping arms are each movable independently of one another relative to the base element and the object can be picked up by the at least three gripping arms. The at least three gripping arms each have a hook-shaped gripping tool.