Wire Saw Spool Flange Sensor for Deformation Monitoring
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Solution Overview
Problem
Wire saws experience frequent wire breakages due to irregularities during cutting and winding processes, leading to productivity losses and system reliability issues, primarily caused by friction, oscillations, and incorrect operation settings, which are often exacerbated by manual measurement errors and spool deformation.
Innovation Solution
A wire saw device equipped with a sensor arrangement that automatically measures the operation condition of spool flanges, including distance and deformation, allowing for contactless monitoring and adjustment of the travel unit settings to prevent wire breakage and optimize spool alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement methods are used for spool flange positioning, then device complexity is reduced, but measurement precision deteriorates leading to wire breakages
Solution Approach 1:
The patent replaces manual mechanical measurement methods with an automatic sensor arrangement that uses optical or electronic sensors to detect spool flange positions and deformations. This substitution eliminates human error in measurement while providing continuous automated monitoring, directly resolving the contradiction between measurement precision and device complexity by accepting increased system complexity to achieve significantly higher measurement accuracy.
Solution Approach 2:
The sensor arrangement enables the wire saw device to automatically monitor and detect spool flange conditions without requiring manual intervention. The system self-adjusts by detecting deformations and position changes, allowing the device to service itself in terms of monitoring and alerting, which improves measurement precision while keeping operational complexity manageable through automation.
2Reliability
If the wire saw operates continuously without monitoring, then productivity is maintained, but reliability deteriorates due to undetected wire breakage risks
Solution Approach 1:
The sensor arrangement provides continuous feedback about spool flange position and deformation conditions to the control system. This feedback loop enables real-time detection of conditions that precede wire breakage, allowing the system to alert operators or automatically adjust parameters before failures occur, thereby improving reliability while managing complexity through intelligent monitoring rather than constant manual oversight.
Solution Approach 2:
The monitoring system performs preliminary detection of spool flange deformations and position deviations before they cause wire breakage. By detecting early signs of problems and alerting operators in advance, the system enables preventive action to be taken before wire breakage occurs, improving reliability by preventing failures rather than just responding to them.
3Reliability
If frequent manual inspections are performed, then reliability improves through early detection of issues, but productivity deteriorates due to operational interruptions
Solution Approach 1:
The sensor arrangement enables continuous monitoring of spool flange conditions without interrupting the wire saw cutting operation. The automated sensor system continuously detects position and deformation parameters throughout the cutting process, eliminating the need for periodic manual inspections that would stop production, thereby maintaining both high reliability through continuous monitoring and high productivity through uninterrupted operation.
Solution Approach 2:
The patent replaces manual inspection processes with automated sensor-based monitoring that operates continuously without requiring operational interruptions. This substitution allows the system to maintain reliability through constant surveillance of spool flange conditions while preserving productivity by eliminating the need to stop the cutting process for inspections.
4Manufacturing precision
If the travel unit is not adjusted for spool deformation, then ease of operation is maintained, but manufacturing precision deteriorates due to wire breakages
Solution Approach 1:
The sensor arrangement provides feedback about spool flange deformation and position to the control system, which automatically adjusts travel unit parameters to compensate for detected deformations. This feedback-based automatic adjustment maintains wire positioning accuracy (manufacturing precision) without requiring manual intervention, thereby improving precision while maintaining ease of operation through automation rather than manual tuning.
Solution Approach 2:
The system dynamically adjusts travel unit parameters based on real-time sensor data about spool flange conditions. Rather than requiring static manual calibration, the system adapts its operation continuously based on actual spool deformation and position, maintaining manufacturing precision automatically while simplifying operation through dynamic adaptation rather than manual adjustment.
Data Source
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AI summary
A wire saw device (200) for sawing a semiconductor work piece is provided. The wire saw device includes a spool reception arrangement (210) for receiving a spool (250), the spool including a spool flange (260; 270) at each end of the spool; and a sensor arrangement (220) for measuring the operation condition of at least one of the spool flanges (260; 270). Further, a method for measuring the operation condition of a wire saw device (200) for sawing a semiconductor work piece is described. The wire saw device includes a spool reception arrangement (210) for receiving a spool (250) including one flange (260; 270) at each end of the spool. The method includes measuring the operation condition of at least one of the spool flanges by a sensor arrangement (220).