Cutting Wire Bow Tracking Using Deflection Rate Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cutting monitoring processes rely solely on instantaneous deflection measurements of cutting wires, limiting the ability to anticipate and prevent cutting incidents.
Innovation Solution
Monitoring the cut based on both the angle of the cutting wire's deflection and its time derivative, allowing for more precise anticipation and adjustment of cutting parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only instantaneous deflection measurements are used for monitoring, then the monitoring system is simple, but the ability to anticipate cutting incidents is limited
Solution Approach 1:
The system calculates the time derivative of deflection to predict future wire position before actual deviation occurs. This preliminary action allows anticipation of cutting incidents by analyzing the rate of change, enabling preventive measures before wire breakage or quality defects happen.
Solution Approach 2:
The monitoring system uses feedback from both instantaneous deflection values and their time derivatives to continuously adjust and predict wire behavior. This dual-parameter feedback mechanism improves reliability by providing more comprehensive information about wire state evolution, allowing better anticipation of potential failures.
2Measurement precision
If multiple sensors are used to measure deflection at several points, then measurement precision improves, but device complexity increases
Solution Approach 1:
The monitoring system divides the wire into multiple measurement zones with sensors positioned at different locations. Each sensor measures deflection at its specific point, and the system processes these segmented measurements individually. This segmentation approach improves overall measurement precision by capturing spatial variations in wire deflection while maintaining manageable system complexity through modular sensor placement.
Data Source
Figure 1
Figure 2~3
Figure 4~5B
AI summary
A first aspect of the invention relates to a method for cut tracking, wherein cutting is performed by a reciprocating movement of a cutting line (FI), said reciprocating movement of the cutting line (FI) being carried out at a specified frequency, and tracking being carried out depending on the bow (FL) of at least one cutting line (FI), using at least one sensor (CA), the line (FI) having a bow (FL) during cutting which (FL) is characterised by an angle α; and the method comprises, for each sensor (CA): a step of measuring the bow α of the line; a step of processing the measurement of the bow (FL), involving smoothing the measurement from the sensor (CA), smoothing being carried out depending on the frequency of the reciprocating movement of the line (FI); and a step of determining the first time derivative α of the bow α from the smoothed measurement; said steps being repeated at regular intervals so as to ensure tracking of the cut.