Cutting Tool Life Determination via Machining Surface Imaging
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Solution Overview
Problem
Conventional methods struggle to accurately determine the life of cutting tools due to limitations in measuring wear and machining precision, which varies by tool type, machining target, and conditions, leading to inconsistent and inaccurate replacement times.
Innovation Solution
A life determination device that captures images of machining surfaces from multiple directions, acquires feature quantities such as contrast, and determines tool life based on changes in these quantities over time, using a processor to analyze and adjust the determined life based on set criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a permitted duration of use is set uniformly for cutting tools, then the management of tool replacement becomes simple, but the determination accuracy of actual tool life deteriorates due to variations in tool type, machining target, and conditions
Solution Approach 1:
The system changes the parameter of tool life determination from a fixed uniform duration to a dynamic value based on multiple factors including tool type, machining target, and machining conditions. The life determination unit calculates adjusted permitted durations by modifying the base duration according to these varying parameters, thereby achieving both operational simplicity and determination accuracy.
2Device complexity
If conventional measurement methods are used to determine tool wear and machining precision, then the measurement process remains simple, but the reliability of tool life determination deteriorates due to inability to precisely reflect actual tool state
Solution Approach 1:
The system employs multiple measurement methods simultaneously (dimensional measurement, surface roughness measurement, and image processing) to evaluate different aspects of machining quality. This multi-functional approach ensures reliable tool life determination by cross-validating results across multiple measurement dimensions, while the integrated system maintains operational simplicity through automated processing.
Solution Approach 2:
The system continuously monitors machining quality parameters and uses this feedback to adjust the permitted duration of use dynamically. The life determination unit receives real-time data on dimensional accuracy, surface roughness, and image features, then modifies the tool life determination accordingly, creating a closed-loop feedback system that improves reliability while maintaining simple operation.
3Ease of manufacture
If a fixed permitted duration of use is determined once, then the initial setup becomes simple, but the adaptability to changing machining conditions deteriorates as the duration cannot be revised for different target types or proportions
Solution Approach 1:
The system transforms the static fixed permitted duration into a dynamic value that automatically adjusts based on current machining conditions. The life determination unit continuously evaluates the actual tool life based on real-time machining data and modifies the permitted duration accordingly, enabling the system to adapt to varying target types, shapes, and machining conditions while maintaining simple initial setup procedures.
Data Source
AI summary
A life determination device comprises: an image acquiring unit that acquires an image showing a result of machining by cutting on a target of the machining by cutting; a feature quantity acquiring unit that acquires a feature quantity indicating the quality of the result of the machining by cutting from the image acquired by the image acquiring unit; and a life determining unit that determines the life of a cutting tool having been used for the machining by cutting on the target based on the feature quantity acquired by the feature quantity acquiring unit.