Multi-dimensional Vibration Grinding Cavity Body for Complex Surfaces
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Solution Overview
Problem
Conventional vibration grinders with a single motor as a vibration source are inefficient for grinding complex surfaces due to a fixed single directional flow pattern, which limits the ability to reach curved surfaces and reduces grinding efficiency.
Innovation Solution
A multi-dimensional vibration grinding cavity body with multiple ultrasonic vibration sources disposed around the cavity body, forming angles of 15°-45° with the sidewall, and a rotating turntable disc to create a convolutional flow pattern, allowing for adjustable frequencies and amplitudes to enhance grinding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single motor is used as the vibration source, then the device structure is simple, but the grinding efficiency is low due to fixed single directional flow pattern
Solution Approach 1:
The single motor vibration source is segmented into multiple ultrasonic vibration sources (at least four) distributed around the cavity body. Each vibration source independently generates vibrations, creating multiple flow patterns simultaneously. This segmentation enables multi-directional abrasive flow that can reach complex surfaces and curved features, significantly improving grinding efficiency while maintaining reasonable structural complexity through modular arrangement.
Solution Approach 2:
The invention transitions from single-directional vibration (one dimension) to multi-directional vibration by arranging ultrasonic sources around the cavity perimeter. The vibration sources are positioned at different angular positions and orientations, creating three-dimensional abrasive flow patterns that can access surfaces in multiple directions, including curved and complex geometries that single-directional systems cannot reach.
2Loss of time
If a single motor is used as the vibration source, then the device structure is simple, but the grinding time is long for complex surfaces
Solution Approach 1:
Multiple ultrasonic vibration sources are distributed around the cavity body to simultaneously treat different regions of the workpiece. This parallel processing approach reduces total grinding time by treating multiple surfaces concurrently, while the modular segmented structure keeps device complexity manageable through standardized component repetition.
Solution Approach 2:
The multiple ultrasonic vibration sources operate continuously and simultaneously, maintaining constant multi-directional abrasive flow throughout the cavity. This continuous multi-directional action ensures that all surfaces including curved and complex features are constantly engaged with abrasive particles, eliminating idle time and reducing total processing time compared to single-directional sequential treatment.
3Adaptability or versatility
If a single motor is used as the vibration source, then the device structure is simple, but the ability to reach curved surfaces is limited
Solution Approach 1:
The invention adds dimensional complexity to the vibration system by arranging ultrasonic sources at multiple positions and orientations around the cavity. This creates three-dimensional abrasive flow patterns that can penetrate and reach curved surfaces, deep cavities, and complex geometries from multiple angles simultaneously, greatly enhancing adaptability to diverse workpiece shapes.
Solution Approach 2:
Different ultrasonic vibration sources can be oriented to target specific regions or features of the workpiece. The local vibration characteristics and flow patterns can be optimized for different areas, allowing the system to adapt to local surface requirements including curved features, while the overall device structure remains relatively simple through standardized component design.
4Manufacturing precision
If the vibration frequency is low, then the device structure is simple, but the grinding performance is limited
Solution Approach 1:
The invention replaces the traditional low-frequency motor-driven mechanical vibration system with high-frequency ultrasonic vibration sources. This substitution enables much higher vibration frequencies (typically 20-100 kHz) that create finer abrasive action and superior grinding performance, while the ultrasonic transducers and piezoelectric actuators provide compact, integrated structures that do not significantly increase overall 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 multi-dimensional vibration grinding cavity body improves grinding efficiency by creating a multi-directional flow pattern that can reach complex surfaces, reducing grinding time and enhancing the ability to process workpieces with curved features.
Implementation Method 1
the plurality of ultrasonic vibration sources deliver shock waves toward an interior of the cylindrical cavity body
Implementation Method 2
at least four ultrasonic vibration sources, disposed uniformly around a sidewall of the cylindrical cavity body
Implementation Method 3
the plurality of shock waves, delivered by the plurality of ultrasonic vibration sources, make a convolutional flow pattern of the abrasive slurry
Implementation Method 4
the workpiece and the abrasive rub each other with the tiny relative movement therebetween, such that the protruding material on the surface of the workpiece may be removed
Data Source
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Figure 6~7
AI summary
The present invention discloses a multi-dimensional vibration grinding cavity body (11, 21). By adjusting amplitudes (power) and frequencies of the multi-dimensional ultrasonic vibration source (12, 22, 14, 24), such that the multi-directional macroscopic flow is formed in the cavity body (11, 21) while keeping the vibration medium to have the original characteristics to improve the performance of grinding of slurry.