Adaptive Laser Marking for Recognizable Casting Identification
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Solution Overview
Problem
Existing casting systems face challenges in accurately marking identifying marks on castings or molds due to varying material types and surface conditions, leading to inconsistent marking results.
Innovation Solution
A casting system equipped with a laser marking device and a recognition device that adjusts marking conditions based on detection results from sensors, allowing for adaptive marking to ensure the identifying mark is recognizable, even after blasting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed marking condition is used for all castings, then the marking process is simple and fast, but the identifying mark cannot be consistently recognized on castings with different material types or surface conditions
Solution Approach 1:
The system uses a recognition device (sensor) to detect the identifying mark after laser marking, and feeds this information back to determine whether the marking was successful. If the mark is not recognizable, the system automatically adjusts the marking conditions and re-attempts marking, creating a closed-loop feedback control system that ensures reliable marking across different casting types.
Solution Approach 2:
The marking system transitions from a static fixed marking condition to a dynamic adaptive marking process. The marking conditions (laser output, marking rate) are adjusted in real-time based on the detection results from the recognition device, allowing the system to adapt to different material types and surface conditions while maintaining mark recognizability.
2Reliability
If the laser output is increased to ensure mark visibility on difficult surfaces, then the identifying mark becomes more recognizable, but the risk of damaging the casting surface increases
Solution Approach 1:
The system applies marking conditions that are sufficient but not excessive for each specific casting surface. By using the recognition device to verify mark quality and iteratively adjusting parameters, the system finds the optimal marking intensity that achieves recognizability without causing surface damage, avoiding both under-marking and over-marking.
Solution Approach 2:
The system dynamically changes marking parameters (laser output power, marking rate, pulse duration) based on the detected surface characteristics and mark recognition results. This parameter optimization ensures that the minimum necessary energy is applied to achieve recognizable marks while preventing surface damage from excessive energy input.
3Measurement precision
If the marking condition is adjusted for each casting type, then the identifying mark recognition accuracy improves, but the production efficiency decreases due to additional adjustment time
Solution Approach 1:
The system performs self-adjustment of marking conditions based on automatic detection of the casting surface and verification of mark quality. The recognition device and control system work together to automatically optimize marking parameters without requiring manual intervention, maintaining high production efficiency while achieving accurate mark recognition on diverse casting types.
Solution Approach 2:
The system performs preliminary detection of the casting surface characteristics before marking, and uses this information to pre-set appropriate marking conditions. This preliminary action prevents the need for extensive adjustments during the marking process, maintaining production efficiency while ensuring accurate mark recognition.
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
The system enables consistent and recognizable marking on castings or molds, adjusting laser output and marking rate to ensure the identifying mark remains visible post-processing, enhancing the accuracy and reliability of the marking process.
Implementation Method 1
a laser marking device marking an identifying mark on a casting or a mold under a set marking condition
Implementation Method 2
The recognition device recognizes the identifying mark marked on a surface of the casting by the laser marking device or the identifying mark transferred to the surface of a casting produced using the mold marked by the laser marking device, on the basis of a detection result of a sensor
Data Source
AI summary
A casting system includes a laser marking device configured to mark an identifying mark on a casting or a mold under a set marking condition, a recognition device configured to recognize the identifying mark marked on a surface of the casting by the laser marking device or the identifying mark transferred to the surface of a casting produced using the mold marked by the laser marking device, on the basis of a detection result of a sensor, wherein the laser marking device changes the set marking condition in a case in which the identifying mark on the casting is not recognized by the recognition device.