Laser Piercing Time Detection for Workpiece Material Recognition
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Solution Overview
Problem
Current methods for determining material properties of workpieces during laser processing are complex and expensive, requiring costly equipment for spectral analysis, which can lead to processing quality issues and consequential damages if material quality deviates from targets.
Innovation Solution
A method that involves piercing a workpiece with a laser beam to detect a measurement variable at the piercing-through time, using a correlation model to determine material properties or machine properties without the need for expensive spectroscopic examinations, by correlating the measurement variable with known parameters such as workpiece thickness and laser intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If spectral analysis of plasma during laser piercing is used to determine material properties, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts only the essential measurement information (piercing-through time) from the complex spectral analysis process, eliminating the need for expensive spectroscopic equipment while retaining the core functionality of material property determination through correlation with pre-stored reference values
Solution Approach 2:
The invention replaces expensive, complex spectroscopic analysis equipment with simple, cost-effective sensors that measure basic parameters like piercing duration, achieving comparable measurement precision through a more economical approach
2Measurement precision
If spectral analysis equipment is installed on laser processing machines, then material property determination capability is improved, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive spectroscopic equipment with inexpensive sensors that measure simple parameters during the laser piercing process, significantly reducing the manufacturing cost of laser processing machines while maintaining material property determination capability
Solution Approach 2:
The invention extracts the essential measurement function from complex spectroscopic analysis, using only the piercing-through time parameter correlated with material properties, thereby eliminating the need for costly equipment while preserving the core analytical capability
3Productivity
If material quality deviates from target quality without detection, then processing speed is maintained, but processing quality deteriorates and consequential damage occurs
Solution Approach 1:
The patent performs material property determination during the initial piercing phase before main processing begins, using the measured piercing-through time to identify material properties and adjust processing parameters in advance, ensuring both speed and quality
Solution Approach 2:
The invention implements a feedback mechanism where the measured piercing-through time is correlated with material properties to automatically adjust processing parameters, ensuring processing quality is maintained while preserving productivity through rapid automated adaptation
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 cost-effective determination of material properties like composition and quality, reducing the risk of processing errors and consequential costs by deducing material characteristics from piercing duration and laser intensity, allowing for adaptive processing parameters and improved quality control.
Implementation Method 1
piercing the workpiece by a laser beam generated the laser processing machine
Implementation Method 2
For optimum processing of the materials of which the workpieces consist, it is necessary in this case to set various parameters for the processing process
Data Source
AI summary
A method determines a material property of a workpiece to be processed by a laser processing machine or a machine property of the laser processing machine. The method includes: piercing the workpiece by a laser beam generated the laser processing machine; detecting a measurement variable at a piercing-through time; and determining the material property or the machine property by way of a correlation between the measurement variable and the material property or the machine property.