Vibration Exciter With Segmented Damping For Lateral Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vibration exciters face issues with lateral dislocation of the vibration generating section, which interferes with accurate vibration detection due to external vibrations, and fail to maintain consistent contact with the workpiece during tilting.
Innovation Solution
A vibration exciter design featuring a chassis with a magnet, an excitation unit, a vibration generating unit with a wound coil, a vibration sensor on the excitation axis, and vibration-proof members equidistantly spaced around the excitation axis to absorb external vibrations and prevent lateral dislocation, along with a spherical end surface for consistent contact and reduced friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the vibration generating section is positioned close to the magnet for compact design, then the device size is reduced, but lateral dislocation occurs during vibration causing contact between the vibration generating section and magnet
Solution Approach 1:
The support structure is divided into multiple vibration-proof members (first, second, third, and fourth vibration-proof members) positioned at different locations around the excitation axis. This segmentation allows each member to independently absorb vibrations from different directions, preventing lateral dislocation while maintaining compact positioning of the vibration generating section near the magnet.
Solution Approach 2:
Vibration-proof members are strategically positioned at specific locations (first and second on the upper surface, third and fourth on the lower surface) to provide localized vibration absorption. This local quality approach ensures that vibration absorption is concentrated where needed most, preventing lateral dislocation without requiring a larger overall device structure.
2Ease of manufacture
If the excitation unit uses a linear contact surface, then manufacturing is simpler, but contact position changes when the workpiece tilts causing detection inaccuracies
Solution Approach 1:
The distal end surface of the excitation unit is formed as a spherical surface instead of a linear surface. This curvature allows the excitation unit to maintain consistent contact with the workpiece even when tilted, as the spherical geometry adapts to angular variations. The spherical shape also reduces frictional force during contact while maintaining manufacturing feasibility through standard spherical machining processes.
3Reliability
If vibration-proof members are added to prevent lateral dislocation, then position stability is improved, but device complexity increases
Solution Approach 1:
The vibration-proof members serve multiple functions simultaneously: they absorb vibrations from external sources, prevent lateral dislocation of the vibration generating section, and maintain the positional relationship between the excitation unit and magnet. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving reliable vibration isolation.
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
Prevents lateral dislocation of the vibration generating unit, maintains consistent contact with the workpiece, and reduces frictional forces, ensuring accurate vibration detection and stable operation during external vibrations.
Implementation Method 1
a vibration generating unit which is integral with the excitation unit, around which a coil is wound, and which generates a vibration cooperatively with the coil and the magnet
Implementation Method 2
a vibration applied to the chassis from outside is absorbed by the vibration-proof members, thus making it possible to prevent the vibration from being transmitted to the vibration generating unit
Data Source
AI summary
A vibration-sensor-integrated vibration exciter 4 has a chassis 21, an excitation unit 22, a magnet 23, a yoke 24, a vibration sensor 25, a fixed plate 26, a moving plate 27, coil springs 28a to 28d, a retaining plate 29, and a crisscross plate 30. Shafts 31a to 31d are fixed to the fixed plate 26. The excitation unit 22 is fixed to the crisscross plate 30. Four vibration-proof rubber members 32a to 32d are installed to the crisscross plate 30 at 90-degree pitches with same radius centering on the excitation axis of the fixed excitation unit 22. The crisscross plate 30 is installed to the retaining plate 29 through the vibration-proof rubber members 32a to 32d. A vibration applied to the chassis 21 is absorbed by the vibration-proof rubber members 32a to 32d, to prevent the yoke 24 from being dislocated in lateral direction due to the vibration.