Milling Tool Breakage Detection via Electrical Signal Monitoring
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Solution Overview
Problem
Existing milling systems face challenges in detecting tool breakage during the milling process, particularly for small milling tools, leading to delayed detection and unnecessary process interruptions, as current methods are not effective in real-time monitoring and may fail to detect breakage accurately.
Innovation Solution
An automated milling system that conducts an electrical signal between the milling tool and the component during the milling process, using a processor to monitor this signal and determine if the tool is broken, allowing for real-time detection and immediate suspension of the milling operation when a breakage is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional milling systems are used without electrical signal monitoring, then the system structure remains simple, but tool breakage cannot be detected in real-time leading to delayed detection and unnecessary process interruptions
Solution Approach 1:
The patent introduces an electrical signal as an intermediary to detect tool breakage. The electrical signal serves as a mediator between the milling tool and the monitoring system, allowing indirect detection of tool integrity without direct physical contact or complex sensors on the tool itself. When the tool breaks, the electrical signal path is interrupted, providing a reliable detection mechanism.
Solution Approach 2:
The patent replaces complex mechanical detection systems with an electrical signal-based detection method. Instead of using mechanical sensors, switches, or complex contact-based detection mechanisms, the system uses electrical signal conduction through the tool-component interface to detect breakage, simplifying the overall system while improving reliability.
2Measurement precision
If real-time tool breakage detection is implemented using electrical signals, then detection accuracy improves, but the system complexity increases due to additional monitoring components
Solution Approach 1:
The electrical signal path serves multiple functions: it is used for normal control operations during milling and simultaneously serves as a detection mechanism for tool breakage. This multi-functionality eliminates the need for separate dedicated detection sensors or signaling systems, reducing overall system complexity while maintaining high detection precision.
Solution Approach 2:
The milling tool and component structure serve their primary function while also providing the detection function automatically. The existing electrical connection required for control purposes doubles as the detection pathway, meaning the system monitors itself without requiring external monitoring infrastructure.
3Productivity
If continuous monitoring of electrical signals is performed, then tool breakage is detected immediately improving productivity, but energy consumption increases
Solution Approach 1:
The electrical signal monitoring operates continuously during the milling process without interruption, providing real-time detection capability. The signal is already present and flowing during normal operation, so continuous monitoring does not require additional energy-intensive sampling or periodic checking mechanisms.
Solution Approach 2:
The system uses feedback from the electrical signal to automatically detect tool breakage and trigger appropriate responses. The continuous electrical signal provides real-time feedback on tool integrity, allowing immediate detection and response to breakage events, maximizing productivity while using minimal additional energy.
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
Enables real-time detection of milling tool breakage, reducing unnecessary interruptions and ensuring timely replacement of the tool, thereby improving the efficiency and reliability of the milling process.
Implementation Method 1
an automated milling system may be configured such that, during milling of a component, an electrical signal is conducted between the milled component and milling tool when the tool is in contact with the component
Data Source
AI summary
In one example, a method including controlling milling of a component via a milling system, the milling system including a spindle, a tool holder coupled to the spindle, the tool holder configured to receive a milling tool; and the milling tool configured to remove at least a portion of the component via milling while the milling tool is rotated by the spindle and tool holder, wherein the milling system is configured to conduct an electrical signal between the milling tool and component during milling of the component when the milling tool is not broken; monitoring the electrical signal conducted between the milling tool and component; and determining whether the milling tool is broken based on the monitored electrical signal.