Monitoring device and monitoring method
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Solution Overview
Problem
Existing monitoring systems for machine tool coolants can only detect changes in hydrogen ion concentration, making it impossible to determine which coolant component is in an abnormal condition, leading to potential ineffective coolant condition improvement.
Innovation Solution
A monitoring device and method that detect both hydrogen ion concentration and electrical conductivity of the coolant, calculate a ratio between these values, and infer if the oil or electrolyte is abnormal based on predefined control range limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only hydrogen ion concentration is monitored, then the monitoring system is simple, but it is impossible to determine which coolant component is abnormal
Solution Approach 1:
The patent segments the coolant monitoring into two distinct detection dimensions: hydrogen ion concentration monitoring and electrical conductivity monitoring. Each detection unit targets a specific property, allowing the system to identify whether oil or electrolyte is abnormal by comparing the ratio of these two measurements against control ranges, thereby achieving precise component identification without requiring complex individual analysis for each component
2Reliability
If coolant condition improvement operations are executed based on simple rate of change monitoring, then the response is quick, but the condition may not be properly improved due to unidentified abnormal components
Solution Approach 1:
The patent performs preliminary identification of the abnormal coolant component by calculating and comparing the ratio of hydrogen ion concentration to electrical conductivity against predetermined control ranges. This preliminary diagnosis occurs before executing any improvement operations, ensuring that the correct component (oil or electrolyte) is identified and targeted for improvement, thereby preventing wasted time on ineffective treatments
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 detailed monitoring of coolant conditions, allowing for accurate identification of abnormal components and timely improvements, thereby ensuring the quality of machined products.
Implementation Method 1
a first detection unit configured to detect a first physical quantity; a second detection unit configured to detect a second physical quantity
Implementation Method 2
a first detection unit configured to detect a first physical quantity; a second detection unit configured to detect a second physical quantity different from the first physical quantity
Data Source
AI summary
Provided is a monitoring device and a monitoring method that can capture the condition of a coolant in detail. A monitoring device according to one embodiment includes: a first detection unit that detects a first physical quantity; a second detection unit that detects a second physical quantity; a ratio calculation unit that calculates the ratio between a first value obtained when the first physical quantity is expressed using a specified unit, and a second value obtained when the second physical quantity is expressed using a specified unit; and an inferring unit that, if the calculated ratio is above an upper limit value of a management range or below a lower limit value of the management range, infers that one among an oil and an electrolyte contained in the coolant is abnormal.