Split Clamping Ring Coupling for Low-Inertia Shaft Connections
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Solution Overview
Problem
Existing clamping connections for drives lack the necessary dynamics due to high mass and moment of inertia, which restricts their operational efficiency and performance.
Innovation Solution
A clamping connection design featuring a hollow shaft with an axial slot, a clamping screw with a screw thread that bears against a flattened area, and a clamping ring with a radially reduced outer contour, allowing for a non-positive connection between a shaft and a hollow shaft section while minimizing mass and moment of inertia.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional clamping connections are used, then structural stability is maintained, but mass and moment of inertia increase, reducing drive dynamics
Solution Approach 1:
The patent extracts and removes unnecessary material from the clamping ring, creating a radially reduced outer contour that minimizes mass while maintaining functional integrity. The clamping ring's outer contour is specifically designed to extend only to where the bearing surface ends, eliminating excess material in the radially outer area that contributes significantly to moment of inertia.
Solution Approach 2:
The clamping ring features localized material distribution with different radial extents at different angular positions. The bearing surface area extends radially further than the radially outer contour in specific regions, creating an optimized mass distribution that maintains clamping function while minimizing overall mass and moment of inertia.
2Productivity
If the clamping ring outer contour is reduced to minimize mass, then moment of inertia decreases improving dynamics, but structural stability may be compromised
Solution Approach 1:
The clamping ring is designed with non-uniform radial extension where the bearing surface area extends radially further than the radially outer contour in specific angular regions. This localized material placement maintains structural stability and clamping function where needed while minimizing mass in regions that contribute most to moment of inertia.
Solution Approach 2:
The screw head bearing surface is positioned to extend radially outward, providing preliminary structural support and stability. This bearing surface area acts as a preemptive reinforcement that maintains structural integrity even when the overall clamping ring outer contour is reduced to minimize moment of inertia.
3Reliability
If the screw head largest diameter is increased to improve clamping stability, then clamping reliability increases, but moment of inertia increases reducing drive dynamics
Solution Approach 1:
The screw head is designed with a bearing surface area that extends radially outward from the screw thread, providing localized clamping stability. This radial extension of the bearing surface maintains reliable contact and clamping force while the overall screw head diameter remains minimized to reduce moment of inertia.
Data Source
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AI summary
The invention relates to a clamping connection comprising: a hollow shaft region; a shaft that is inserted into the hollow shaft region to at least some extent: a screw, in particular a clamping screw; and a clamping ring. The hollow shaft region has an axial slot, in particular an axial slot which passes radially through the hollow shaft region. The screw has a screw thread and a screw head, the screw head in particular having a largest diameter which is larger than the largest diameter of the screw thread. The hollow shaft region has a flat portion, in particular a portion with a radial wall thickness which is reduced as compared to the radial wall thickness outside said portion and/or with an outer radius that is reduced as compared to the wall thickness outside the portion. The screw, in particular the screw thread, rests at least partly against the flat portion of the screw, and the screw is interspaced from the shaft, in particular from the outer surface of the shaft.