Milling Tool Bending Monitoring for Wear Detection
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Solution Overview
Problem
Current milling processes face inefficiencies due to the lack of a reliable method to detect wear or defects in cutting tools, leading to premature replacement, increased energy consumption, and production losses, as existing monitoring methods are complex and fail to accurately assess tool asymmetry or wear.
Innovation Solution
A monitoring process that tracks the bending moment of cutting tools, using sensors to measure and analyze parameters like maximum and minimum bending moments, angular position, and dispersion, with defined thresholds to alert operators or trigger automatic tool changes, ensuring timely replacement and maintaining product quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cutting tool is replaced frequently for safety, then the quality of machined parts is maintained, but productivity decreases due to stopping time and cost of new tools
Solution Approach 1:
The patent implements a feedback mechanism by continuously monitoring the bending moment of the cutting tool during operation. Sensors measure the bending moment in real-time, and this information is fed back to a control system that compares it against threshold values. When the bending moment exceeds the threshold, indicating tool wear or asymmetry, the system automatically triggers a tool replacement, thereby maintaining part quality while optimizing productivity by avoiding premature replacements.
2Measurement precision
If the cutting tool is monitored using complex measurement methods, then wear detection capability is improved, but system complexity and difficulty of analysis increase
Solution Approach 1:
The patent extracts the essential monitoring function by focusing solely on measuring the bending moment of the cutting tool, rather than implementing complex multi-parameter measurement systems. A single sensor mounted on the tool holder measures the bending moment directly, and the control system compares this single parameter against predefined thresholds to detect tool wear and asymmetry, thereby achieving effective monitoring with minimal system complexity.
3Device complexity
If the cutting tool is monitored using simple methods, then system complexity is reduced, but the ability to detect tool asymmetry and wear is insufficient
Solution Approach 1:
The patent replaces complex mechanical measurement systems with a sensor-based electronic monitoring system. Instead of using multiple mechanical sensors or complex analysis methods, the invention uses a bending moment sensor that electronically measures the mechanical stress on the tool. The control system then processes this electronic signal to detect tool wear and asymmetry, achieving high measurement precision with a simple and elegant system architecture.
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 allows for precise detection of tool wear, preventing defects and energy inefficiencies, optimizing production by ensuring tools are replaced neither too early nor too late, thereby enhancing productivity and reducing costs.
Implementation Method 1
determine measuring values of a first parameter corresponding to a bending of the cutting tool
Data Source
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AI summary
The invention relates to a method for monitoring a milling method for a milling machine provided with a milling tool (3) comprising cutting teeth (5), characterised in that said method comprises the following steps: determining measuring values of a first parameter corresponding to bending of the milling tool (3) according to a second parameter corresponding to the angle of rotation of the milling tool (3) in a rotating frame of reference of the milling tool (3); and analysis of the measuring values according to at least one monitoring criterion.