Workpiece Cleaning via Piezoelectric Vibration Control
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Solution Overview
Problem
Current workpiece cleaning methods, such as batch cleaning in tanks, often result in inconsistent cleaning quality due to positional variations within the tank and the use of ultrasonic transducers, which can lead to deformation or damage from excessive vibration intensity.
Innovation Solution
A cleaning method and device utilizing a first vibrating body, typically a piezoelectric element, attached to the workpiece and a second vibrating body in the tank, both controlled by a controller to vibrate at different frequencies, ensuring thorough cleaning while minimizing deformation by adjusting vibration intensity based on contamination type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If batch cleaning is used in a cleaning tank, then multiple workpieces can be cleaned simultaneously, but cleaning quality becomes inconsistent due to positional variations within the tank
Solution Approach 1:
The patent applies ultrasonic vibration to the cleaning tank to generate cavitation bubbles in the cleaning solution. These cavitation bubbles collapse near the workpiece surface, creating micro-jets that remove contaminants effectively regardless of the workpiece position in the tank, thereby achieving consistent cleaning quality across all workpieces while maintaining batch cleaning capability
Solution Approach 2:
The patent uses the hydraulic action of cleaning solution flow combined with ultrasonic vibration to enhance cleaning effectiveness. The cleaning solution circulates through the tank while ultrasonic waves propagate through the liquid, creating a synergistic effect that ensures uniform cleaning across all workpieces in the batch
2Manufacturing precision
If ultrasonic transducers are used for cleaning, then cleaning effectiveness is improved, but deformation or damage occurs due to excessive vibration intensity
Solution Approach 1:
The patent optimizes ultrasonic vibration parameters including frequency, power density, and exposure time to achieve effective cleaning while preventing workpiece damage. By carefully controlling these parameters, the cleaning process removes contaminants without causing deformation or structural damage to delicate workpieces
Solution Approach 2:
The patent applies ultrasonic vibration selectively to areas requiring cleaning while controlling the overall intensity to prevent excessive action that could damage the workpiece. The vibration is applied just enough to remove contaminants without over-vibrating the workpiece structure
3Manufacturing precision
If high vibration intensity is applied to remove contaminants, then cleaning effectiveness increases, but the risk of workpiece deformation increases
Solution Approach 1:
The patent employs controlled parameter changes in the vibration process, using lower amplitude vibrations for delicate workpieces and higher amplitudes for robust components. The frequency and duration are adjusted based on workpiece material properties and contamination type, achieving effective cleaning while maintaining structural stability
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 approach improves cleaning quality by uniformly cleaning multiple workpieces without positional dependency, reducing the risk of deformation and power consumption, and effectively removing contaminants of varying sizes.
Implementation Method 1
The first vibrating body may be a piezoelectric element provided on the disk drive suspension
Implementation Method 2
cleaning the workpiece by causing the first vibrating body to vibrate by the controller after immersing the workpiece in the cleaning solution
Data Source
AI summary
According to one embodiment, a cleaning method for cleaning a workpiece including a first vibrating body includes electrically connecting the first vibrating body with a controller, immersing the workpiece in a cleaning solution, and cleaning the workpiece by causing the first vibrating body to vibrate by the controller after immersing the workpiece in the cleaning solution.