Rotating Through-Hole Plate for Laser Deviation Detection
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Solution Overview
Problem
Current methods for detecting deviations in laser irradiation position during laser machining are time-consuming, require operator skill, and lack accuracy due to reliance on visual inspection and insufficient differentiation between positional, angular, and focal deviations.
Innovation Solution
A laser machining apparatus with a rotatable plate containing a through hole that allows partial laser light passage, equipped with a meter to measure light transmission and a transition detector to analyze changes in light transmission as the plate rotates, enabling detection of minute deviations and determining their form and direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a through hole allows the whole laser light to pass through, then the light transmission is high, but the sensitivity to detect minute deviations is low
Solution Approach 1:
The through hole is designed to allow only a part of the laser light to pass through, segmenting the light beam. This partial transmission creates a more sensitive measurement system where even minute deviations cause significant changes in the measured light amount, while still maintaining sufficient light transmission for detection
Solution Approach 2:
The plate structure provides different functions in different regions: the through hole region allows selective light transmission for sensitivity, while the surrounding plate structure provides mechanical support and rotation capability. This local differentiation optimizes both detection sensitivity and structural integrity
2Measurement precision
If visual inspection is used to check deviation, then the inspection process is simple, but the inspection accuracy is low and time-consuming
Solution Approach 1:
The visual inspection method is replaced with an automated optical measurement system. A meter measures the amount of light passing through the through hole, and a transition detector automatically analyzes the measurement transitions as the plate rotates, eliminating the need for manual visual inspection and significantly improving both accuracy and efficiency
Solution Approach 2:
The system performs self-inspection by automatically measuring light transmission and detecting deviations without human intervention. The automated measurement and transition detection processes enable the system to monitor its own performance continuously, reducing inspection time and eliminating the need for skilled operators
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 configuration allows for precise detection of even minute deviations and estimation of their form and direction, reducing inspection time and improving accuracy compared to traditional methods.
Implementation Method 1
The through hole allows a part of the laser light to pass therethrough
Implementation Method 2
The meter is configured to measure a passing laser amount as an amount of light or an amount of heat of the laser light passing through the through hole
Data Source
AI summary
To allow even a minute deviation of laser light to be detected and the form and direction of the deviation to be estimated. A laser machining apparatus includes a plate, a meter, a plate drive, and a transition detector. The plate is rotatable and irradiated with the laser light. A through hole is formed at a position spaced apart from the rotation axis of the plate. At least a part of the through hole is included in an irradiation area of the laser light. The through hole allows a part of the laser light to pass therethrough. The meter measures a passing laser amount as an amount of light or an amount of heat of the laser light passing through the through hole. The plate drive rotates the plate. The transition detector detects a transition of a measured value of the passing laser amount as the plate rotates.