Plate Workpiece Tilt Prediction for Stable Laser Cutting
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Solution Overview
Problem
During laser cutting operations, cut-free workpiece portions often tilt due to weight force and cutting gas pressure, leading to potential collisions and automatic removal issues in subsequent processes.
Innovation Solution
A method to predict the tilt inclination of cut-free workpieces by analyzing possible tilting edges and evaluating tilting moments from weight force and process forces, allowing for adjustments in the cutting position or support configuration to prevent tilting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cutting gas pressure is increased to improve cutting speed, then productivity increases, but workpiece portions tilt more due to gas pressure acting on cut-free portions
Solution Approach 1:
The control device calculates and determines the free-cutting position before the actual cutting operation is completed. By predicting the tilt inclination and identifying the optimal free-cutting position in advance, the system prepares the workpiece configuration to prevent tilting before the cutting gas pressure acts on the cut-free portion, thus resolving the contradiction between high cutting speed and workpiece stability
2Stability of the object's composition
If support carriages are added to prevent tilting, then workpiece stability improves, but device complexity increases
Solution Approach 1:
The invention replaces the mechanical support carriage system with a computational approach. The control device uses calculations based on workpiece geometry, material properties, and cutting parameters to predict tilt inclination and determine optimal free-cutting positions, substituting complex mechanical intervention with intelligent control algorithms that prevent tilting through proper cutting position selection
3Stability of the object's composition
If free-cutting position is changed to prevent tilting, then workpiece stability improves, but manufacturing precision may be affected
Solution Approach 1:
The control device incorporates feedback by continuously calculating the tilt inclination based on the current cutting position, workpiece geometry, and material properties. The system uses this feedback to determine the optimal free-cutting position that prevents tilting while maintaining manufacturing precision, creating a closed-loop control system that balances stability and precision requirements
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
Prevents tilting of cut-free workpieces by selecting appropriate cutting positions and adjusting support configurations based on calculated tilting moments, ensuring stable processing and removal.
Implementation Method 1
a processing head (9) which directs a processing beam (3), in particular laser beam, onto the plate-like workpiece (2)
Implementation Method 2
When cutting free workpiece portions on a laser cutting installation
Implementation Method 3
the workpiece portions which have been cut free can tilt as a result of their weight force and/or as a result of the action of the cutting gas pressure
Implementation Method 4
the workpiece portions which have been cut free can tilt as a result of their weight force
Data Source
AI summary
The invention relates to a method for predicting the tilt inclination of a workpiece part that is being cut free from a remaining workpiece using a machine tool during a machining process, and that rests on one or more supports, said method comprising the following steps: determining one or more possible tilt edges about which the workpiece part being cut free might tilt. For at least one potential tilt edge, particularly for each potential tilt edge, determining tilt moments that act on the workpiece part in different states of the machine tool, and on the basis of the determined tilt moments, determining whether the workpiece part would tilt about a tilt edge.