Cutting Edge Heat Map Analysis for Parameter Influence Detection

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Solution Overview

Problem

Existing cutting processes and technologies struggle to fully understand and predict the influence of cutting parameters on the appearance of cut edges, leading to inefficiencies and complexities in optimizing cutting edge quality.

Innovation Solution

A procedure using a neural network with backpropagation and Layer-Wise Relevance Propagation (LRP) to analyze recordings of cutting edges, determining the relevance of individual pixels to specific cutting parameters, and providing a marked output to highlight areas influenced by each parameter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If extensive test series with various varying cutting parameters are carried out to improve cut edge appearance, then the understanding of cutting parameter influence improves, but the time consumption and complexity increase significantly

Engineering Contradiction:
Improvecut edge appearance qualityVSAvoidtime for test series
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent replaces the mechanical trial-and-error testing system with an artificial intelligence-based image analysis system. The neural network analyzes images of cut edges and automatically determines the influence of cutting parameters, substituting extensive physical test series with computational analysis that provides rapid results without time-consuming material testing.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent creates a virtual model of the cutting process through image analysis and neural network training. Instead of repeatedly performing physical cut tests, the system uses images (copies) of cut edges to train and validate the neural network, which then predicts parameter influences without requiring additional physical testing.

Inventive Principle:
Principle #26Copying

2Device complexity

If traditional image analysis methods are used to determine cutting parameter influence, then the process is simple, but the precision and reliability of parameter determination is insufficient

Engineering Contradiction:
Improveanalysis method simplicityVSAvoidcutting parameter determination accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent transforms the analysis from simple image processing to advanced neural network-based parameter extraction. By changing the computational parameters and algorithms used (from traditional image analysis to deep learning with backpropagation), the system achieves significantly higher precision in determining cutting parameter influences while maintaining automated operation.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent introduces a neural network as an intermediary between the cut edge image and the cutting parameter determination. This intermediary layer processes the image data through multiple computational stages, extracting features and relationships that direct analysis methods cannot detect, thereby improving measurement precision without requiring complex manual intervention.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Extent of automation

If the neural network is trained to recognize cutting parameters from images, then the automation level increases, but the device complexity and computational requirements increase

Engineering Contradiction:
Improveautomatic parameter determinationVSAvoidneural network architecture complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent segments the neural network into distinct functional modules: image preprocessing, feature extraction layers, backpropagation computation, and parameter determination output. This segmentation allows each module to be optimized independently and facilitates implementation using standard deep learning frameworks, managing complexity through modular architecture.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent creates a universal neural network architecture that can determine multiple cutting parameters simultaneously from a single image analysis. The system is designed to handle various parameter types (power, speed, gas flow, etc.) through a unified computational framework, reducing overall system complexity compared to having separate analysis systems for each parameter.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4221930B1Method, device, and computer program product for displaying the influence of cutting parameters on a cutting edge
Publication Date: 2025.04.23 TRUMPF WERKZEUGMASCHINEN GMBH & CO KG
  • EP4221930B1 patent drawingFigure 1
  • EP4221930B1 patent drawingFigure 2A~2F
  • EP4221930B1 patent drawingFigure 3

AI summary

The invention relates to a method for detecting cutting parameters (18) which are of particular importance to certain features of a cutting edge (16). A captured image (32) of the cutting edge (16) is analyzed by an algorithm (34) using a neural network (36) in order to ascertain (38) the cutting parameters (18). The captured pixels (42a, b) which play a significant role in the process of determining the cutting parameters (18) are identified by means of a backpropagation (40) of the analysis. An output (50) in the form of a display of said significant captured pixels (42a, b), in particular in the form of a heat map, shows a user of the method which cutting parameters (18) must be modified in order to improve the cutting edge (16). The invention additionally relates to a computer program product or a device for carrying out the method.