Laser Scanner Return Control During Power Voltage Drop
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Solution Overview
Problem
Existing laser processing apparatuses lack effective mechanisms to safely manage power supply fluctuations during operations, potentially leading to overcurrent issues and unsafe restarts when power supply voltage drops below a certain threshold.
Innovation Solution
The apparatus includes a voltage detector and a controller that performs an operation position acquisition, feedback vector data generation, and feedback command output processes to safely return the scanner to a reference position when the power supply voltage falls below a threshold, reducing the risk of overcurrent and ensuring safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the laser processing apparatus continues operation when power supply voltage drops below threshold, then productivity is maintained, but overcurrent risk and operational safety deteriorate
Solution Approach 1:
The control unit performs preliminary actions by acquiring the scanner's operation position and generating feedback vector data before power failure occurs. When voltage drops below the first threshold, the system proactively calculates the scanner's current position based on accumulated vector data and prepares return commands, preventing overcurrent issues during restart rather than reacting after failure occurs.
Solution Approach 2:
The system implements feedback by continuously monitoring power supply voltage and using accumulated operation position data to determine scanner location. When voltage drops below threshold, the control unit uses this feedback information to generate appropriate return commands, ensuring the scanner is safely returned to reference position before normal operation resumes, thus preventing overcurrent conditions.
2Reliability
If the scanner is immediately stopped when power supply voltage drops, then overcurrent risk is reduced, but operational time and productivity are lost
Solution Approach 1:
Instead of immediately stopping the scanner when voltage drops, the system performs preliminary actions by acquiring the scanner's current operation position and generating feedback vector data for return to reference position. This allows the scanner to complete its current operation cycle safely before being returned to reference position, minimizing productivity loss while still preventing overcurrent during restart.
Solution Approach 2:
The system provides beforehand cushioning by accumulating operation position data and preparing feedback vector data before power failure occurs. This cushioning mechanism ensures that when power is restored, the scanner can be safely returned to reference position without causing overcurrent, allowing continuous operation to proceed with minimal interruption.
3Reliability
If the apparatus implements comprehensive voltage monitoring and scanner position tracking, then operational safety is improved, but device complexity increases
Solution Approach 1:
The control unit performs multiple functions using a single integrated system: it monitors power supply voltage, accumulates operation position data, determines scanner position, generates feedback vector data, and outputs return commands. This multi-functionality reduces device complexity compared to having separate dedicated components for each function, while still providing comprehensive safety monitoring and control.
Solution Approach 2:
The system merges voltage monitoring, position tracking, and control command generation into a single integrated control unit. By combining these functions and using accumulated vector data for position determination, the system achieves comprehensive operational safety without requiring complex separate systems for each function.
Data Source
AI summary
A laser processing apparatus for irradiating a workpiece with a laser beam to process the workpiece. The laser processing apparatus includes a laser oscillator configured to generate the laser beam, a scanner configured to perform scanning with the laser beam from the laser oscillator, a power supply configured to supply power to the laser oscillator and the scanner, a voltage detector configured to detect whether an output voltage from the power supply is smaller than a predetermined threshold value, an input unit configured to receive input of processing data indicating a processing content of the workpiece, and a controller configured to control the laser oscillator and the scanner, based on the processing data.