Tillage Tool Wear Forecasting for Planned Replacement Timing
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Solution Overview
Problem
Current methods for assessing the wear condition of chisels and chisel holders in milling and mining processes are inefficient, leading to either premature replacement or loss of productivity due to subjective visual inspections, which do not accurately utilize the remaining wear potential, and are disruptive to operations.
Innovation Solution
A method that records the current state of wear using characteristic values, determines the residual wear capacity, and provides actionable information to operators about the remaining work performance, allowing for optimized machining processes by considering local conditions and material properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual inspection of the milling drum is performed to assess wear condition, then the wear status can be evaluated, but the machine must be shut down and the inspection is time-consuming, reducing productivity
Solution Approach 1:
The patent applies preliminary action by performing wear assessments before the wear limit is actually reached. The system continuously monitors wear parameters and predicts remaining service life, allowing operators to plan tool replacements during scheduled maintenance windows rather than causing unplanned production interruptions. This proactive approach maintains productivity while ensuring tools are replaced at optimal times.
Solution Approach 2:
The patent replaces the manual visual inspection method with an automated monitoring system that uses sensors and evaluation units to continuously assess wear conditions. This substitution eliminates the need for machine shutdowns and manual inspections, maintaining both measurement precision and productivity simultaneously by providing real-time wear data without interrupting operations.
2Reliability
If tools are replaced early to avoid damage and ensure safety, then reliability is improved, but cost performance deteriorates due to unused wear potential
Solution Approach 1:
The patent implements feedback by continuously monitoring actual wear conditions and comparing them against wear limits and service life predictions. The evaluation unit provides real-time information about the actual remaining service life based on measured wear parameters, allowing operators to make informed decisions about tool replacement timing. This feedback mechanism ensures tools are used until their actual wear limit is reached, maximizing wear potential utilization while maintaining reliability through accurate condition awareness.
Solution Approach 2:
The patent applies parameter changes by transitioning from fixed scheduled replacement intervals to dynamic replacement timing based on actual wear parameters. The system monitors wear rate, wear pattern, and remaining service life parameters, adjusting the replacement decision based on real-time condition data rather than predetermined schedules. This allows tools to be used until their actual wear limit is reached, optimizing both reliability and cost performance.
3Loss of substance
If tools are used until wear limit to maximize wear potential, then cost performance is improved, but the risk of tool breakage and secondary damage increases
Solution Approach 1:
The patent applies preliminary action by predicting the remaining service life and warning operators before the wear limit is reached. The system provides advance notice of when tools will reach their wear limit, allowing operators to plan replacements proactively. This prevents tools from being used beyond their wear limit, eliminating the risk of tool breakage and secondary damage while maximizing wear potential utilization up to the optimal replacement point.
4Device complexity
If subjective visual assessment is used to evaluate wear, then no additional equipment is needed, but the assessment is time-consuming and wear potential is not optimally utilized
Solution Approach 1:
The patent replaces subjective visual assessment with an automated evaluation system that uses sensors, measurement devices, and computer-based evaluation units. This substitution objective quantifies wear parameters, calculates remaining service life, and provides precise replacement recommendations. The system maintains simplicity by integrating sensors directly into the tool holder and using software-based evaluation, eliminating time-consuming manual inspections while optimizing wear potential utilization through accurate measurements.
Data Source
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AI summary
The invention relates to a wear prediction method or a maintenance method for a tillage machine. It is provided that the current wear condition of one or more tillage tools is recorded. Based on the current wear condition, the remaining wear capacity until the wear limit is reached is then determined according to the invention.