Laser Processing Start Position Control for Variable Object Spacing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Laser processing methods struggle to maintain continuous processing when objects with varying conveyance distances are conveyed, leading to defective products due to the limitations of lens design, where the effective lens diameter and focal length are in a trade-off, and variations in object distance affect processing accuracy.
Innovation Solution
A method and apparatus that detect the conveyance of objects using a detector, determine the processing start position based on the time interval and velocities of the objects, and irradiate the second object with a laser beam within the effective lens diameter of a light condenser, allowing for absorption of distance variations and maintaining processing without affecting productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the effective lens diameter is increased to accommodate distance variations, then processing reliability is improved, but the focal length decreases leading to reduced manufacturing precision
Solution Approach 1:
The patent applies dynamics by making the laser processing system adaptive to varying object distances through real-time detection and calculation. The processing start position is dynamically determined based on the detected distance between objects, allowing the system to adjust its operation parameters on the fly rather than being fixed to a static configuration.
Solution Approach 2:
The patent changes the parameter of processing start position based on the detected distance between objects. By calculating the processing start position from the time interval and conveyance velocities, the system adjusts its operational parameters to accommodate distance variations, thereby maintaining reliability without requiring a fixed lens configuration.
2Manufacturing precision
If the focal length is increased to improve manufacturing precision, then processing accuracy is improved, but the effective lens diameter decreases reducing the ability to accommodate distance variations
Solution Approach 1:
The system dynamically determines the processing start position based on real-time detection of object distances and conveyance velocities. This dynamic adjustment allows the system to maintain precision with a fixed focal length while adapting to varying distances, eliminating the need to trade off focal length for reliability.
Solution Approach 2:
The patent implements feedback by using a detector to monitor the distance between objects and feed this information back to the control system. The control system then calculates and adjusts the processing start position based on this feedback, creating a closed-loop system that maintains accuracy while accommodating distance variations.
3Reliability
If laser processing is interrupted to accommodate distance variations, then processing reliability is improved, but productivity decreases due to loss of continuous processing
Solution Approach 1:
The patent applies preliminary action by calculating the processing start position in advance based on the detected distance and conveyance velocities. This pre-calculation allows the system to maintain continuous processing without interruptions, as the adjusted start position is ready before processing begins, thereby preserving both reliability and productivity.
Solution Approach 2:
The patent maintains continuity of useful action by enabling uninterrupted laser processing through real-time adjustment of the processing start position. The system continuously detects object distances and velocities, calculates the appropriate start position, and proceeds with processing without stopping, thus maintaining both reliability and high productivity.
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 prevents defective products by ensuring consistent processing times and increased productivity, as the effective lens diameter is adjusted to accommodate distance variations, allowing for continuous processing without being affected by changes in object distance.
Implementation Method 1
detecting the first object conveyed to a predetermined position by a detector; detecting the second object conveyed to the predetermined position by the detector
Implementation Method 2
a light condenser to condense the laser beam emitted from the laser light source to irradiate and process the first object and the second object with the laser beam
Implementation Method 3
a laser light source to emit a laser beam
Data Source
AI summary
A laser processing method includes: conveying a first object and a second object; detecting the first object conveyed to a predetermined position by a detector; detecting the second object conveyed to the predetermined position by the detector following the detecting the first object; determining a processing start position of the second object from: a period of time from a time of the detecting the first object to a time of the detecting the second object; a conveyance velocity of the first object; and a conveyance velocity of the second object; and scanning and irradiating the second object with a laser beam from the processing start position to a processing stop position within an effective lens diameter of a light condenser.