Laser Cutting Sorting Control Using Contour Separability
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Solution Overview
Problem
Existing laser machining systems face inefficiencies in sorting parts cut out through laser cutting due to machining defects, leading to potential system halts and inefficient operation.
Innovation Solution
A laser machining system equipped with a detection unit to monitor machining states, a machining state evaluation unit to assess contour line separability, and a sorting operation determination unit to control the sorting process based on evaluation information, ensuring efficient separation of parts from remaining material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the production monitoring system executes isolation when monitoring data is out of threshold range, then product classification is achieved, but the system stops when sorting cannot be executed due to machining defects
Solution Approach 1:
The system performs preliminary evaluation of machining state during the laser cutting process to predict whether sorting will be successful. The machining state evaluation unit assesses contour line quality and part separability before the sorting operation begins, allowing the control device to prepare appropriate responses in advance and avoid system halts.
Solution Approach 2:
The detection unit continuously monitors machining parameters and contour line formation in real-time, providing feedback to the machining state evaluation unit. This feedback mechanism enables dynamic assessment of part separability and allows the system to adjust sorting operations based on actual machining outcomes, preventing unnecessary stops.
2Measurement precision
If the system evaluates machining state for each section of the machining path, then sorting accuracy is improved, but processing time increases
Solution Approach 1:
The machining path is divided into multiple sections, and the evaluation is performed for each section independently. This segmentation allows the system to focus computational resources on critical areas where contour line quality affects sorting success, achieving high precision without evaluating the entire path uniformly.
Solution Approach 2:
The system applies different evaluation criteria and thresholds to different sections of the machining path based on their specific characteristics. Contour lines in critical sections require stricter evaluation, while other sections use standard criteria, optimizing the balance between evaluation accuracy and processing time.
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 efficient sorting of laser-cut parts by accurately determining separability, reducing system halts and improving overall operation efficiency.
Implementation Method 1
a laser oscillator (1) to emit a laser beam (L)
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3~4
AI summary
In order to efficiently execute the operation of sorting parts cut out through laser cutting, provided are: a control device (10) that controls a laser oscillator (1) and a drive unit (3) and executes machining to cut a workpiece into a part and a remaining material, the laser oscillator being configured to emit a laser beam, the drive unit being configured to move, along a machining path, an irradiation point at which the workpiece is irradiated with the laser beam; a detection unit (6) that determines, as a time-series signal, a result of observing in time series a state of the workpiece on which the machining is being executed; a machining state evaluation unit (8) that determines, as evaluation information, a result of evaluation on a state of the machining for each of sections obtained by dividing the machining path, based on the time-series signal; an evaluation information storage unit (8) that stores contour line evaluation information in which a contour line is associated with the evaluation information, the contour line being a boundary between the part and the remaining material; and a sorting operation determination unit (9) that determines a sorting control command based on the contour line evaluation information, the sorting control command being a command for controlling sorting operation in which the part is taken out from a position where the workpiece is machined and moved to a target position.