Balancing Adapter Guide Surface for Rotor Centering
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Solution Overview
Problem
Existing balancing machines face issues with centering and concentricity due to the connection points between the clamping elements and the base body, leading to inaccuracies in positioning and repeatability during the clamping of rotor or machine elements.
Innovation Solution
The balancing adapter supports clamping elements on a guide surface of the base body, ensuring symmetrical positioning and a fixed connection between the collet and piston, reducing radial forces and the number of moving parts, while incorporating a damping element to prevent shock-induced ejection and using a bearing bush for smooth piston movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the clamping elements are connected to the base body through multiple connection points, then the structural stability is improved, but the centering accuracy and concentricity deteriorate
Solution Approach 1:
The patent extracts the harmful intermediate connection structure (roller bearings and multiple connection points) between the clamping elements and the base body. By directly supporting the clamping elements on the base body's stop surface, it eliminates the sources of centering errors while maintaining structural stability through direct rigid connection.
2Manufacturing precision
If additional guide parts are added for the clamping elements, then the positioning accuracy is improved, but the device complexity and manufacturing costs increase
Solution Approach 1:
The patent merges the guiding function into the base body itself by forming a guide surface directly on the base body's receiving opening. The clamping elements are supported directly on this guide surface, eliminating the need for separate guide parts while maintaining high positioning accuracy.
3Adaptability or versatility
If the collet remains movable relative to the piston, then the tolerance compensation is improved, but the measurement accuracy and repeatability deteriorate
Solution Approach 1:
The patent segments the tolerance compensation function from the collet-piston connection. Instead of allowing relative movement between collet and piston, it provides tolerance compensation through the guide surface and stop surface geometry in the base body, enabling a fixed rigid connection between collet and piston for high measurement accuracy.
4Productivity
If the actuating device is moved quickly to release the rotor, then the productivity is improved, but the shock-induced ejection risk increases
Solution Approach 1:
The patent incorporates a damping element between the actuating device and the base body that absorbs shock during rapid movement. This cushioning element allows quick release for high productivity while preventing harmful shock impacts that could eject the rotor.
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
This solution enhances the positional accuracy and repeatability of clamping, reduces manufacturing and assembly costs, and improves measurement accuracy by minimizing radial forces and the risk of rotor ejection, allowing for precise and reproducible balancing of machine elements.
Implementation Method 1
a damping element is arranged between the piston and the base body. To release the rotor, the actuating device is moved to the base body. There is a risk that the resulting shock will not only loosen the rotor, particularly in the case of a small design, but will eject it completely from the receiving opening. This negative effect is avoided with a damping element
Implementation Method 2
it can be mounted in the guide bush via a bearing bush provided with rolling bodies
Data Source
Figure 1
AI summary
The invention relates to a balancing adapter (1) for clamping a rotor (2) to a machine part of balancing machine that rotates about an axis of rotation (3), which balancing adapter has a main body (4) having a central accommodating opening (5) for the rotor (2), a collet chuck (12) having clamping elements (15) for detachably retaining the rotor (2) in the accommodating opening (5), and an actuating device (11) for moving the clamping elements (15) between a clamping position and a releasing position. In order to enable positionally accurate and reproducible accommodation and retention, the clamping elements (15) of the collet chuck (12) are supported on a guiding surface (19) on the main body (4).