Pulse Laser Direction Switching for Low-Power Precision Processing
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Solution Overview
Problem
Conventional laser processing devices face challenges in achieving high-quality processing while reducing power consumption, as they require significant power to generate laser light.
Innovation Solution
The laser processing device incorporates a laser oscillator, an optical modulator, and a controller that generates control signals to manage power supply and emission direction of the laser light. This includes a power supply period and a power non-supply period, as well as switching the emission direction to include multiple first periods within a power supply period, allowing for precise control of optical energy applied to the target object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If continuous power supply is used to generate laser light, then high-quality processing is achieved, but power consumption increases
Solution Approach 1:
The patent applies periodic action by dividing the power supply into distinct periods: a first power supply period that generates laser light for a predetermined time, followed by a second power supply period that stops power supply. This periodic on-off cycling allows the system to accumulate thermal energy in the laser oscillator during the first period, achieving high-quality processing, while stopping power during the second period reduces overall power consumption. The cycle repeats to maintain processing quality while managing energy usage.
2Loss of energy
If power supply is reduced to lower power consumption, then energy wastage decreases, but processing quality deteriorates
Solution Approach 1:
The patent employs preliminary action by providing a predetermined amount of power during the first power supply period before the processing cycle completes. This advance power supply accumulates sufficient thermal energy in the laser oscillator to generate high-quality laser light during the irradiation phase. By preparing the system in advance with adequate power, the subsequent processing maintains high quality even though power is reduced or stopped during the second period, thus reducing energy wastage without sacrificing processing quality.
3Productivity
If constant laser light emission is used, then continuous processing is achieved, but energy efficiency decreases
Solution Approach 1:
The patent implements periodic action by structuring the power supply into alternating first and second power supply periods. During the first period, power is supplied to generate laser light for continuous processing. During the second period, power supply stops to improve energy efficiency. This periodic cycling maintains productivity by ensuring the laser oscillator retains thermal energy from the first period, allowing continuous processing capability, while the second period's power cutoff enhances energy efficiency by eliminating unnecessary energy consumption during stable operation phases.
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
This approach enables both high-quality processing and significant reduction in power consumption by precisely controlling the optical energy applied to the target object, reducing the need for constant power supply and minimizing energy wastage.
Implementation Method 1
a laser oscillator that oscillates pulse laser light
Implementation Method 2
an optical modulator that switches an emission direction of the pulse laser light to either a first direction toward a target object or a second direction not toward the target object
Data Source
AI summary
A laser processing device includes a laser oscillator that oscillates pulse laser light; a power source that supplies power to the laser oscillator; an optical modulator that switches an emission direction of the pulse laser light to either a first direction toward a target object or a second direction not toward the target object; and a controller that generates a first control signal and a second control signal, the first control signal being a signal for controlling supply of the power by the power source to generate at least one set of a power supply period and a power non-supply period, the second control signal being a signal for controlling change of the emission direction by the optical modulator to cause the power supply period to include a plurality of first periods in which the emission direction is the first direction.