Movable Element Damping System with Phase Shift Assemblies
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Solution Overview
Problem
Existing damping devices for cutting and drilling tools face inefficiencies in effectively damping vibrations across varying frequencies due to changes in tool operation, clamping type, spindle rigidity, and orientation, leading to reduced damping effectiveness.
Innovation Solution
A movable damping system with an absorbent mass featuring multiple damping assemblies that generate phase shifts and displacement amplitude differences, allowing for adjustable rigidity and mass distribution to enhance damping across a broader frequency range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single damping assembly with uniform rigidity is used, then the device structure is simple, but the damping effectiveness decreases when vibration frequency varies due to changes in tool operation, clamping type, spindle rigidity, and orientation
Solution Approach 1:
The damping device is divided into multiple damping assemblies (at least two) positioned at different parts of the absorbent mass. Each damping assembly can have different rigidity characteristics, allowing the system to address multiple vibration frequencies simultaneously. This segmentation enables the damping device to maintain effectiveness across varying operating conditions without requiring complete redesign.
Solution Approach 2:
Different damping assemblies are positioned at different locations on the absorbent mass with potentially different rigidity values. This local differentiation allows each damping assembly to target specific vibration modes or frequencies, improving overall adaptability while maintaining a relatively simple overall structure.
2Reliability
If the rigidity of the elastic suspension is modified to match a specific vibration frequency, then damping effectiveness is improved for that frequency, but damping performance deteriorates when the vibration frequency changes
Solution Approach 1:
The damping device employs multiple damping assemblies with different rigidity characteristics, creating a dynamic response capability. When the vibration frequency changes, different damping assemblies become increasingly effective, allowing the system to adapt its damping characteristics without active control. This dynamic behavior ensures reliable damping across a broader frequency range.
Solution Approach 2:
The damping device effectively creates a composite damping system by combining multiple damping assemblies with different rigidity properties. This composite approach allows the system to leverage the strengths of each individual damping assembly across different frequency ranges, maintaining reliability while improving adaptability.
3Adaptability or versatility
If multiple damping assemblies with different rigidity are positioned at different parts of the absorbent mass, then damping effectiveness across varying frequencies is improved, but the device complexity increases
Solution Approach 1:
The damping device is divided into multiple damping assemblies positioned at different parts of the absorbent mass. Each assembly can have different rigidity characteristics, allowing the system to address multiple vibration frequencies simultaneously. This segmentation enables the damping device to maintain effectiveness across varying operating conditions without requiring complete redesign.
Solution Approach 2:
The multiple damping assemblies are designed to work together within a single housing, with each assembly contributing to the overall damping function. This multi-functional arrangement allows the device to handle various vibration frequencies and operating conditions while maintaining a unified, integrated structure that limits overall 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 system achieves improved damping performance by generating phase shifts and displacement amplitude variations between damping assemblies, effectively reducing vibration amplitudes across a wider range of frequencies, ensuring effective vibration control.
Implementation Method 1
the movable element is arranged to function with a phase shift and/or shift of displacement amplitude between the oscillations of each part of the absorbent mass in each of the damping assemblies
Implementation Method 2
generating damping effects and/or having different rigidity for each of the damping assemblies
Implementation Method 3
The different elastic elements enable damping of the vibrational movements of the absorbent mass relative to the cylindrical part of the housing
Data Source
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AI summary
The present invention relates to a movable element for a damping system (4) comprising an absorbent mass (1) designed to be positioned in a housing (2) and comprising at least two damping assemblies (3) positioned respectively against the surface of the absorbent mass (1) and designed to bear against the internal wall of the housing (2) in different parts of the absorbent mass (1), wherein the movable element is arranged to function with a phase shift and/or shift of displacement amplitude between the oscillations of each part of the absorbent mass (1) in each of the damping assemblies (3) during the operation of the movable element, by generating damping effects and/or having different rigidity for each of the damping assemblies (3). The present invention further relates to damping system and method for implementing a movable element.