Machine Tool Scraper Lip Wear Detection With Embedded Signal Line
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Solution Overview
Problem
Machine tool wiper lips, due to their complex geometry and frequent wear, require regular inspection for wear state, which is time-consuming, especially in large manufacturing systems, necessitating an automated method to inform operators of wear limits.
Innovation Solution
A wiper system with an embedded signal line that generates a signal when the wear limit is reached, allowing for automatic notification of the operator through electrical or fluid-based mechanisms, such as a conductive signal or visible indicators, enabling timely replacement without manual checks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual inspection of wiper lips is performed regularly, then wear condition can be monitored, but time consumption increases significantly
Solution Approach 1:
The wiper lip performs self-monitoring through an embedded signal line that automatically detects when the wear limit is reached. The system serves itself by generating a wear indication signal without requiring external inspection, thereby eliminating the time-consuming manual check while maintaining reliable wear condition monitoring.
Solution Approach 2:
The wear indication system provides automatic feedback to operators when the wiper lip reaches its wear limit. The signal line embedded in the wiper lip generates an electrical or fluid signal that communicates the wear status, enabling continuous monitoring without manual intervention and significantly reducing inspection time.
2Ease of operation
If wiper lips have complex polygonal geometry with multiple sections, then wiping performance is improved, but tracking wear condition of individual sections becomes difficult
Solution Approach 1:
The signal line is segmented into multiple sections, with each section corresponding to a specific lip section. This segmentation allows independent monitoring of each lip section's wear condition, making it easy to track which specific section has reached wear limit while maintaining the complex polygonal geometry needed for effective wiping performance.
Solution Approach 2:
The signal line serves multiple functions simultaneously: it acts as an electrical or fluid conduit for wear indication and as a structural element integrated into each lip section. This multi-functionality enables wear tracking across all complex lip sections without adding separate monitoring components, maintaining ease of operation while solving the detection difficulty.
3Extent of automation
If electrical conductor is used as signal line embedded in wiper lip, then automated wear detection is enabled, but current flow is blocked by insulation until wear limit is reached
Solution Approach 1:
The electrical conductor is pre-insulated within the wiper lip to prevent premature signal transmission. This preliminary protective action ensures that the signal line remains non-conductive during normal operation, and only activates automatically when the wear limit is reached and the conductor becomes exposed, enabling reliable automated wear detection without false signals.
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
Automatically informs operators of wiper lip wear, reducing the need for frequent inspections and ensuring timely replacement, thereby improving operational efficiency and reducing downtime in manufacturing systems.
Implementation Method 1
the fluid line (34) has a free end through which the wear limit (G) is defined... fluid (40) contained in the reservoir (36) can escape through the free end of the fluid line (34)
Implementation Method 2
If the wear limit of the wiper lip is reached, resulting in a section of the signal line being exposed and thus coming into contact with a conductive surface such as a guideway of a machine tool, then an electric current flows through the signal line
Data Source
Figure 1a~2b
Figure 3a~3d
AI summary
The present invention relates to a scraper (14) for scraping a surface of a machine tool having a wear-indicating device (18, 20, 24, 30) for the scraper lip (16) of the scraper. At least one signal line (18) is embedded in the scraper lip (16) in such a manner that, upon reaching the wear limit (G), at least one section of the signal line (18) is exposed.