Grinding System Heat Flow Sensor for Burn Detection
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Solution Overview
Problem
The existing grinding device struggles with accurately determining grinding burn due to coolant adherence on the workpiece surface, affecting the temperature sensor's measurement accuracy.
Innovation Solution
A grinding system that incorporates a heat flow sensor to measure heat flow radiated from the grinding wheel and workpiece, enabling more accurate detection of grinding burn by positioning the sensor to avoid coolant interference and using the measured heat flow to determine the occurrence of grinding burn.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a temperature sensor is used to measure the surface temperature of the workpiece, then the grinding burn can be determined, but the measurement accuracy deteriorates when coolant adheres to the sensor
Solution Approach 1:
The patent introduces a heat flow sensor as an intermediary device that measures heat flow radiated from the workpiece surface instead of directly measuring temperature. This mediator allows indirect assessment of thermal conditions without being contaminated by coolant, thereby maintaining measurement accuracy while still enabling grinding burn detection
Solution Approach 2:
The patent replaces the traditional temperature sensor (mechanical contact-based measurement) with a heat flow sensor that detects thermal radiation. This substitution eliminates the need for direct physical contact between the sensor and workpiece surface, thereby avoiding coolant interference while preserving the ability to monitor thermal conditions for grind burn detection
2Reliability
If a temperature sensor is placed in contact with the workpiece surface, then temperature measurement is possible, but the reliability of measurement deteriorates due to coolant adhesion
Solution Approach 1:
The heat flow sensor serves as a reliable intermediary that captures thermal information from the workpiece surface without direct contact. This mediator ensures consistent and reliable measurements by positioning the sensor to detect radiated heat while preventing coolant from compromising sensor performance
Solution Approach 2:
The patent replaces contact-based temperature sensing with non-contact heat flow detection. This substitution fundamentally improves measurement reliability by eliminating the vulnerability to coolant adhesion that plagues contact-based sensors, while maintaining the ability to detect thermal anomalies indicating grind burn
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 enhances the accuracy of grinding burn determination, allowing for optimized grinding conditions and improved process control by using heat flow data to assess and adjust grinding parameters.
Implementation Method 1
a heat flow sensor (7) that measures a heat flow radiated from a surface of at least one of the grinding wheel (2) and the workpiece (80) as the heat is generated at a grinding point (P)
Data Source
Figure 1
Figure 2A~2B
Figure 3~4
AI summary
To provide a grinding system capable of improving the accuracy of determining a grinding burn of a workpiece, the grinding system (100) includes a grinding wheel (2) that grinds a workpiece (80), an electric motor (3) for a grinding wheel, which rotationally drives the grinding wheel (2), a Z-axis motor (41) and an X-axis motor (51), which generate a moving force for relatively moving the workpiece (80) and the grinding wheel (2), a controller 6 that controls the electric motor (3) for the grinding wheel, the Z-axis motor (41), and the X-axis motor (51), and an operation unit (61) that determines the occurrence of a grinding burn on the workpiece (80) based on a measurement value of the heat flow sensor (7) that measures the heat flow radiated from a surface of at least one of the grinding wheel (2) and the workpiece (80) as the heat is generated at a grinding point (P) where the grinding wheel (2) comes into contact with the workpiece (80).