Machining Monitoring Thresholds Using Grouped Detection Data
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Solution Overview
Problem
Existing workpiece machining devices face challenges in easily setting upper and lower limit values for monitoring ranges.
Innovation Solution
A workpiece machining device that includes a detection section to detect physical amounts at predetermined intervals, a storage device to store actual detection data, and a setting section to set upper and lower limit values for each group based on the actual detection data, allowing for easier adjustment of monitoring ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If upper and lower limit values are set manually for monitoring range, then monitoring precision can be adjusted, but the operation becomes complex and time-consuming
Solution Approach 1:
The system automatically determines upper and lower limit values for the monitoring range by utilizing actual detection data from the workpiece machining process. The determination section calculates these limit values based on statistical analysis of the detection data, eliminating the need for manual setting by operators while maintaining precise monitoring capabilities.
Solution Approach 2:
The system performs preliminary collection and analysis of actual detection data during the machining process to pre-determine appropriate upper and lower limit values before formal monitoring begins. This preliminary action enables the system to establish accurate monitoring thresholds automatically without requiring manual intervention during operation.
2Reliability
If monitoring range covers entire machining process, then all abnormalities can be detected, but detection precision at specific points decreases
Solution Approach 1:
The monitoring range is divided into multiple sections with different upper and lower limit values determined for each section based on actual detection data from corresponding machining stages. This segmentation allows the system to maintain high detection precision at specific points while covering the entire machining process through multiple localized monitoring zones.
Data Source
AI summary
A workpiece machining device for executing machining of a workpiece using a machining tool, including a detection section configured to detect a detectable physical amount which is a physical amount relating to the machining of the workpiece and which can be detected at each of detection points which are set at predetermined intervals in a monitoring range for monitoring a state of the detectable physical amount, a storage device configured to store machining data which is actual detection data which is actually detected by the detection section, a group forming section configured to form one or multiple groups by dividing the actual detection data stored in the storage device in accordance with the number of the detection points which are set in advance in an interval from a monitoring start point to a monitoring end point of the monitoring range, and a setting section configured to set an upper limit value and a lower limit value of the monitoring range for each group of the groups formed by the group forming section based on the actual detection data belonging to each group.