Sanding Machine Thermal Control System for Surface Quality
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Solution Overview
Problem
Current sanding machines lack real-time quality control and tool wear monitoring, leading to unnecessary reworking due to undetected surface irregularities and tool malfunctions, with final visual inspections being insufficient for identifying imperfections and tool conditions.
Innovation Solution
A control system integrated with a sanding machine that includes a thermal imaging camera to detect temperature values of the workpiece and sanding tool surfaces, comparing these against predefined thresholds to adjust operations or trigger alarms, allowing for immediate detection of anomalies and tool malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If final visual inspection is used to detect surface irregularities, then quality control is performed, but the detection occurs too late causing unnecessary reworking and loss of time
Solution Approach 1:
The patent applies preliminary action by implementing temperature monitoring during the sanding process to detect anomalies before they result in defective workpieces. The system continuously monitors temperature variations that indicate tool wear or machining issues, allowing intervention before final inspection reveals defects, thereby eliminating unnecessary reworking time.
2Measurement precision
If visual control systems are used to measure workpiece geometry, then quality analysis is performed, but slight geometric irregularities are not detected
Solution Approach 1:
The patent replaces the mechanical visual control system with a thermal field-based detection system. By monitoring temperature variations on the workpiece surface and sanding tool during the machining process, the system detects slight geometric irregularities and tool wear that visual inspection misses, significantly improving defect detection reliability.
3Manufacturing precision
If no real-time monitoring is implemented, then the system is simple, but tool wear and malfunctions are not detected leading to reduced manufacturing precision
Solution Approach 1:
The patent implements a self-service monitoring system where the sanding process itself generates the monitoring signal through temperature variations. The thermal fields naturally produced during machining provide information about tool wear and workpiece quality, eliminating the need for complex external sensing systems while maintaining high manufacturing precision.
4Reliability
If threshold-based temperature monitoring is implemented, then real-time anomaly detection is achieved, but predefined thresholds may not cover all working conditions
Solution Approach 1:
The patent employs feedback mechanisms where temperature monitoring data from ongoing machining operations is used to dynamically adjust and refine threshold values. The system learns from actual working conditions and adapts its detection criteria, ensuring reliable anomaly detection across varying working conditions while maintaining system versatility.
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
Enables real-time monitoring and adjustment of the sanding process to prevent imperfections and tool wear, reducing rework and extending tool life by promptly identifying and addressing issues during the machining process.
Implementation Method 1
a control system configured to detect the temperature values of the surface of said workpiece and/or of the abrasive surface of said sanding tool
Data Source
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Figure 3~5
AI summary
The present invention relates to a sanding machine (M) for working a workpiece (P) made in wood, plastic, glass, fiberglass, metal, ceramic and the like comprising an inlet station (1) for the entry of said workpiece (P) to be worked and an outlet station (2) for the exit of the worked workpiece (P); a conveyor group (3) for conveying said workpiece (P) to be worked, along a feed direction (A), from said inlet station (1) towards said outlet station (2); at least one working unit (4) of said workpiece (P) comprising a sanding tool (41) provided with an abrasive surface for working said workpiece (P); said sanding machine (M) being characterized in that it comprises a control system (5, 5', 5") configured to detect the temperature values of the surface of said workpiece (P) and/or of the abrasive surface of said sanding tool (41). The present invention also relates to a control system to be installed on a sanding machine. The present invention also relates to an operating method of a sanding machine.