Integrated Grinding Wheel with Camera-Based Position Compensation
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Solution Overview
Problem
Conventional substrate grinding apparatuses face inefficiencies due to non-uniform edge grinding and the need for frequent position compensation between rough and finish grinding parts, leading to increased processing time and reduced yield.
Innovation Solution
An apparatus with a stage part, grinding part, camera part, and replacing part that includes a grinding wheel with rough and finish grooves, where the camera analyzes the grinding wheel's condition to adjust its position and replace it as needed, reducing the number of grinding parts and enhancing process efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate rough grinding part and finish grinding part are used, then grinding function is provided, but equipment size and cost increase
Solution Approach 1:
The patent combines the rough grinding part and finish grinding part into a single integrated grinding unit. The grinding wheel includes both rough grinding grooves and finish grinding grooves on its surface, allowing both grinding functions to be performed by one component rather than requiring separate equipment, thereby reducing equipment size and cost while maintaining comprehensive grinding capability
Solution Approach 2:
The grinding wheel is designed with multi-functionality by incorporating both rough grinding grooves and finish grinding grooves. This single grinding wheel can perform both rough grinding and finish grinding operations, eliminating the need for separate dedicated grinding parts and reducing overall system complexity
2Manufacturing precision
If position compensation is performed for rough grinding part and finish grinding part, then grinding accuracy is maintained, but processing time increases
Solution Approach 1:
By merging the rough grinding and finish grinding functions into a single grinding wheel, the patent eliminates the need for separate position compensation operations between two distinct grinding parts. The integrated design allows continuous grinding operations without the time-consuming compensation steps required when switching between separate rough and finish grinding equipment
Solution Approach 2:
The integrated grinding wheel enables continuous grinding operations by performing both rough and finish grinding in sequence without interruption. The camera-based detection system continuously monitors the grinding wheel's position and condition, allowing real-time adjustments without stopping the grinding process, thereby maintaining accuracy while minimizing processing time
3Productivity
If grinding wheel position is not compensated, then processing time is reduced, but edge uniformity deteriorates
Solution Approach 1:
The patent incorporates a camera-based detection system that continuously monitors the grinding wheel's position and condition during operation. The captured images are analyzed to detect any deviations in the grinding wheel's position or wear state, and this feedback information is used to make real-time adjustments, ensuring edge uniformity is maintained without requiring time-consuming pre-compensation operations
Solution Approach 2:
The system performs preliminary detection of the grinding wheel's condition using the camera before actual grinding occurs. This allows the system to pre-adjust the grinding wheel's position or detect wear patterns that would affect edge uniformity, enabling accurate grinding to proceed without time-consuming compensation during the actual processing
4Duration of action of stationary object
If manual wheel replacement is performed, then grinding continuity is maintained, but replacement time increases
Solution Approach 1:
The patent implements an automated wheel replacement system that detects when the grinding wheel needs replacement through camera-based monitoring of wear patterns. The system automatically initiates and completes the wheel replacement process without requiring manual intervention, thereby maintaining grinding continuity while significantly reducing the time lost during wheel changes compared to manual replacement procedures
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 apparatus ensures accurate and efficient grinding processes by reducing equipment size and cost, shortening wheel replacement time, and improving overall process efficiency by integrating rough and finish grinding into a single system with real-time compensation and automated wheel replacement.
Implementation Method 1
The camera part is configured to take a picture of the grinding wheel, analyze the picture of the grinding wheel and generate information about the grinding wheel
Implementation Method 2
The grinding wheel includes a rough grinding groove and a finish grinding groove
Data Source
AI summary
An apparatus for grinding a substrate includes a stage part configured to support a substrate thereon, a grinding part, a camera part, a replacing part and a control unit. The grinding part includes a grinding wheel configured to grind an edge of the substrate. The camera part is configured to take a picture of the grinding wheel, analyze the picture of the grinding wheel and generate information about the grinding wheel. The replacing part includes a spare grinding wheel and is configured provide the spare grinding wheel to the grinding part or pick up the grinding wheel from the grinding part. The control unit is configured to receive the grinding wheel information from the camera part and offset compensate a position of the grinding wheel on the basis of the grinding wheel information or communicate with the replacing part to replace the grinding wheel on the basis of the grinding wheel information.