Inline Cut Surface Inspection for Punching Tool Wear Feedback
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Solution Overview
Problem
Existing processing systems for sheet metal separation, such as punching and broaching, require offline evaluation of cut surfaces and cutting edges, which disrupts the production process and makes real-time quality control and machine optimization challenging.
Innovation Solution
Implementing a method to detect the contour of cut surfaces and active surfaces within the processing system using inline, non-contact sensor units, such as optical methods like chromatic confocal distance measurement, digital image capture, and light section methods, allowing for continuous monitoring and evaluation of surface quality and tool wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If offline evaluation of cut surfaces is used, then quality control is possible, but production efficiency decreases due to disruption of the production process
Solution Approach 1:
The patent implements preliminary action by performing cut surface evaluation inline within the processing system before workpieces leave the production line. The sensor unit captures images of cut surfaces during normal production flow, allowing quality assessment to occur in advance of traditional offline inspection, thus maintaining production continuity while ensuring quality control.
Solution Approach 2:
The patent replaces mechanical offline inspection systems with optical sensing technology. Image capture devices and sensor units detect cut surface characteristics non-contactly during production, substituting traditional mechanical measurement and evaluation methods that required removing workpieces from the production flow, thereby maintaining both quality control and production efficiency.
2Measurement precision
If offline evaluation of cutting edges is used, then tool wear assessment is possible, but real-time optimization of the processing system is prevented
Solution Approach 1:
The patent implements feedback by continuously monitoring cut surface characteristics during production using sensor units and image capture devices. The evaluation unit analyzes these measurements in real-time and provides feedback about tool wear and processing quality, enabling immediate adjustments to be made to the processing system parameters or tool replacement decisions, thus achieving real-time optimization that was impossible with offline evaluation methods.
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 assessment of product quality and tool condition, facilitating immediate adjustments and improving the efficiency of the production process by integrating quality control and machine optimization directly into the manufacturing workflow.
Implementation Method 1
The contour of the cut surface on the workpiece is detected without contact with at least one sensor unit, in particular by an optical method
Data Source
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AI summary
The invention relates to a method for operating a processing installation (1) with a first processing machine (2), wherein the first processing machine (2) comprises at least one movable punch (5) for separating, preferably punching or punching-broaching, a workpiece (8), with the following steps: contactless, preferably optical, recording of a contour of a cut surface produced on the workpiece (8) by the punch (5), by means of at least one sensor unit (12) installed on the processing installation (1), wherein the recording is performed in-line in the processing installation (1) and consequently without removing the workpiece (8) from the processing installation (1), and evaluating the condition of the cut surface on the basis of the data recorded by the sensor unit (12).