Machine Tool Wear Imaging for Adaptive Cutting Control
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Solution Overview
Problem
Existing machine tools face accuracy issues due to tool wear, as the amount of shape change estimation based on machining distance or time is not precise and varies with tool type, leading to potential degradation in machining accuracy.
Innovation Solution
A machine tool equipped with an imaging unit to capture the tool's shape, a shape extraction unit to analyze the image, a wear detection unit to assess the degree of wear, and a changing unit to adjust the cutting pitch and depth based on the detected wear, ensuring machining conditions align with the actual tool shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If machining distance or time is used to estimate tool shape change, then the estimation process is simple, but the machining accuracy degrades due to tool wear variation
Solution Approach 1:
The patent replaces the mechanical/time-based estimation method with an optical imaging system. A camera captures images of the tool, and image processing algorithms analyze the tool's actual shape, substituting physical measurement methods with optical detection to achieve more accurate wear assessment
Solution Approach 2:
The patent creates a digital copy of the tool's actual shape through image capture and processing. Instead of estimating wear through time or distance parameters, the system generates an accurate visual replica of the tool's current state, which is then analyzed to determine actual shape change
2Productivity
If tool wear is not monitored and machining parameters are not adjusted, then the machining process is simple and continuous, but machining accuracy degrades due to tool wear
Solution Approach 1:
The patent implements a feedback mechanism where the imaging unit continuously monitors tool wear during machining, and the control unit adjusts machining parameters based on this feedback. This closed-loop system maintains machining accuracy by dynamically responding to tool wear while preserving production continuity
Solution Approach 2:
The patent transforms static machining parameters into dynamic, adjustable values. The system continuously adapts cutting depth, pitch, and other parameters based on real-time tool wear detection, allowing the machining process to remain optimal throughout the tool's entire service life
Data Source
AI summary
A machine tool includes: an imaging unit for capturing an image of a tool from a side of the tool; a shape extraction unit for extracting the shape of the tool from the image of the tool captured by the imaging unit; a wear detection unit for detecting the degree of wear of the tool based on the shape of the tool; and a changing unit for changing at least one of the pitch and the depth of cut according to the degree of wear.