Clamping Ring Shaft Assembly With Insertion Rings for Secure Force Fit
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Solution Overview
Problem
Existing shaft-hub connections lack reliable and efficient force-fitting mechanisms that prevent loss and ensure secure attachment without additional mechanisms.
Innovation Solution
A clamping ring with a radially uninterrupted threaded bore and insertion rings are used to create a shrink-fitting connection, utilizing axial and transverse slots on the adapter shaft for elastic deformation and secure attachment, with insertion rings providing protection in both axial and circumferential directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamping ring is used to create a force-fitting connection between the shaft and adapter shaft, then the connection reliability is improved, but the device complexity increases due to the need for additional clamping ring and insertion ring components
Solution Approach 1:
The clamping ring is integrated with the adapter shaft through captivation, merging two components into a unified assembly. The insertion rings are incorporated into the clamping ring structure, combining the clamping function with the loss protection function in a single integrated component rather than separate elements.
Solution Approach 2:
The insertion rings serve as intermediary elements between the clamping ring and the adapter shaft slots. These intermediate components transmit the clamping force while providing the necessary geometric interlocking to prevent loss, acting as mediators that enable the force-fitting connection without requiring direct complex integration between the clamping ring and shaft.
2Ease of manufacture
If axial slots are introduced into the adapter shaft to enable elastic deformation for shrink-fitting, then the ease of manufacture is improved, but the strength of the adapter shaft deteriorates due to the reduced cross-sectional area
Solution Approach 1:
The adapter shaft is segmented by introducing axial slots that divide the shaft wall into multiple sections. This segmentation allows the shaft to elastically deform during the shrink-fitting process while maintaining structural integrity. The slots create discrete segments that can flex independently, enabling the force-fitting connection without requiring the entire shaft to deform uniformly.
Solution Approach 2:
The axial slots are positioned specifically in regions where elastic deformation is needed for the shrink-fitting process, while other regions of the adapter shaft maintain full structural strength. The slots create local areas of controlled flexibility without compromising the overall strength of the shaft, as the slots are strategically placed to allow deformation only where necessary for connection formation.
3Reliability
If insertion rings with nose regions are added to provide loss protection in axial and circumferential directions, then the reliability is improved, but the device complexity increases due to the additional insertion ring component
Solution Approach 1:
The insertion rings are designed to perform multiple functions simultaneously: they provide loss protection in both axial and circumferential directions, guide the assembly process during installation, and maintain the positional relationship between the clamping ring and adapter shaft. This multi-functionality eliminates the need for separate components for each protective function, reducing overall device complexity while improving reliability.
Solution Approach 2:
The insertion rings are nested within the clamping ring structure, with the clamping ring serving as the outer housing and the insertion rings positioned inside it. This nested arrangement allows the loss protection features to be integrated within the existing clamping ring geometry rather than requiring external additions, thereby providing enhanced protection without proportionally increasing device complexity.
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 solution provides a reliable, easy-to-produce force-fitting connection that prevents loss and ensures secure attachment with high elasticity and minimal force, enhancing the reliability of the shaft-adaptor shaft interface.
Implementation Method 1
Because of the axial slots, the adapter shaft is elastically deflectable and thus is able to be pressed against the hollow shaft as soon as the threaded pin exerts pressure on the adapter shaft. The shrink-fitting is brought about in the process.
Implementation Method 2
the clamping ring has a radially uninterrupted threaded bore into which a screw part is screwed, in particular a threaded pin, which exerts pressure on the adapter shaft
Data Source
AI summary
In an assembly for connecting an adapter shaft to a shaft in a force-fitting manner using a clamping ring, the clamping ring is mounted on the adapter shaft, the shaft is inserted into the adapter shaft, the clamping ring has a radially continuous threaded bore into which a screw part is screwed, in particular a threaded pin, which exerts pressure on the adapter shaft, at least one insertion ring is inserted in an annular groove introduced into the clamping ring, in particular in an annular groove introduced into the inner wall, i.e. in particular the hollow side of the clamping ring, and/or is at least partially accommodated therein, and the insertion ring, or each insertion ring, has a nose region that projects radially inward and which projects at least partially into a slot of the adapter shaft.