Laser Cutting Gap Widths to Prevent Part Wedging in Skeletons

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Solution Overview

Problem

Automated removal of workpiece parts from laser-cutting machines is not robust due to interactions with residual skeletons, particularly wedging, which can lead to machine downtimes.

Innovation Solution

A method for determining individual cutting-gap widths based on workpiece part data to prevent interactions with residual skeletons, using AI agents to optimize cutting-gap widths for robustness and productivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If automated removal using passive suction cups and pin shuttles is implemented, then productivity is improved, but reliability deteriorates due to wedging interactions with residual skeleton

Engineering Contradiction:
Improveautomated workpiece part removalVSAvoidrobustness of removal process
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary analysis of workpiece part geometry and nesting arrangement before removal to identify high-risk parts prone to wedging. Cutting-gap widths are pre-adjusted for these identified parts to prevent wedging interactions during the automated removal process, thereby maintaining both productivity and reliability.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts cutting-gap width parameters based on individual workpiece part characteristics and nesting configurations. By modifying this physical parameter, the system prevents harmful wedging interactions while maintaining efficient automated removal operations, resolving the contradiction between productivity and reliability.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If uniform cutting-gap width is used for all workpiece parts, then manufacturing precision is maintained, but productivity deteriorates due to unnecessary wide gaps for low-risk parts

Engineering Contradiction:
Improvecutting-gap width consistencyVSAvoidmaterial utilization efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The system applies different cutting-gap widths to different workpiece parts based on their individual risk parameters. High-risk parts receive wider gaps to prevent wedging, while low-risk parts receive narrower gaps to maximize material utilization. This localized differentiation maintains manufacturing precision where needed while improving overall productivity.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system transitions from static uniform cutting-gap widths to dynamic variable cutting-gap widths that adapt to individual workpiece part characteristics. This dynamic adjustment optimizes the balance between manufacturing precision and productivity by applying appropriate gap widths only where necessary.

Inventive Principle:
Principle #15Dynamics

3Reliability

If individual cutting-gap widths are determined for each workpiece part, then reliability is improved by preventing wedging, but device complexity increases

Engineering Contradiction:
Improverobustness of automated removalVSAvoidcomplexity of cutting parameter control
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system automatically evaluates workpiece part geometry, determines risk parameters, and calculates optimal cutting-gap widths without requiring complex external intervention. The nesting software and control system self-manage the complexity of individualized parameter determination, maintaining reliability while keeping the operational interface simple.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system uses feedback from workpiece part data and nesting arrangements to automatically adjust cutting-gap widths. By implementing closed-loop control where removal risk assessment feeds into cutting parameter optimization, the system manages complexity through systematic feedback mechanisms rather than ad-hoc adjustments.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS20250381624A1Computer-implemented method for determining cutting-gap widths for a laser-cutting method
Publication Date: 2025.12.18 TRUMPF WERKZEUGMASCHINEN GMBH & CO KG
  • US20250381624A1 patent drawing
  • US20250381624A1 patent drawing
  • US20250381624A1 patent drawing

AI summary

A method for determining cutting-gap widths for a laser-cutting method, in which individual workpiece parts are cut out from a workpiece panel. The method includes inputting workpiece part data for the workpiece parts to be cut out. The method further includes establishing individual risk parameters for the workpiece parts to be cut out regarding a risk of workpiece parts interacting at least in part with a residual skeleton remaining from the workpiece panel by becoming wedged, based on the input workpiece part data. The method further includes determining individual cutting-gap widths for the workpiece parts based on the established individual risk parameters.