Camera-Guided CNC Laser Alignment for Precise Material Processing
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Solution Overview
Problem
CNC machines, particularly laser cutters, face challenges in accurately aligning and controlling the laser beam due to misdirection risks, regulatory constraints, and variable material processing requirements, which affect precision and safety.
Innovation Solution
Incorporating a camera system within the CNC machine to image the material and adjust the movable head's position dynamically, ensuring alignment and power adjustments based on real-time imaging data to maintain the intended final appearance and prevent unintended material movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a laser beam is used for cutting and engraving materials, then processing speed and automation are improved, but precision and safety are worsened due to misdirection risks and regulatory constraints
Solution Approach 1:
The patent implements a camera system that captures images of the material before and during laser processing. The controller compares the captured images with the intended design pattern to detect material movement or misalignment. Based on this feedback, the system dynamically adjusts the laser beam position or re-calculates the processing path to maintain precision despite initial misalignment or material shifts.
Solution Approach 2:
The system performs preliminary imaging of the material and fiducial marks before laser processing begins. This allows the controller to pre-calculate the actual positions of material features relative to the intended design, and proactively adjust the laser beam trajectory or processing parameters before any cutting or engraving occurs, preventing precision errors rather than correcting them during processing.
2Adaptability or versatility
If electromagnetic energy is delivered to cause changes in material, then manufacturing capability is improved, but safety and control are worsened due to misdirection risks
Solution Approach 1:
The camera system continuously monitors the material position and compares it with the intended processing pattern. The controller uses this real-time feedback to detect deviations and dynamically adjust the laser beam delivery system, ensuring the electromagnetic energy is applied precisely to the intended locations even if material shifts occur during processing.
Solution Approach 2:
The patent introduces fiducial marks as intermediary reference features on the material. These marks serve as mediators between the camera system and the laser processing system, providing detectable reference points that enable precise localization and alignment of the material, thereby improving beam control reliability without limiting material processing versatility.
3Manufacturing precision
If real-time imaging is performed to update material position, then precision is improved, but device complexity is worsened
Solution Approach 1:
The camera system serves multiple functions: it images fiducial marks for material localization, captures the material surface before processing to establish baseline positions, and can monitor processing in real-time. This multi-functionality reduces the need for separate sensing systems, thereby improving precision without proportionally increasing overall system complexity.
Solution Approach 2:
The system uses the material's own fiducial marks and surface features as the imaging target, eliminating the need for external reference systems or complex alignment apparatus. The material itself provides the reference information needed for positioning, simplifying the overall system while maintaining high precision through self-referential measurement.
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
Enhances precision and safety by allowing real-time adjustments and alignment of the laser beam, improving the accuracy of cuts and engravings while preventing material damage from misalignment and ensuring compliance with regulatory guidelines.
Implementation Method 1
deliver, via a moveable head of a computer numerically controlled machine, electromagnetic energy sufficient to cause a first change in a material
Implementation Method 2
electromagnetic energy sufficient to cause a first change in a material partially contained within an interior space of the computer numerically controlled machine
Data Source
AI summary
A moveable head of a computer numerically controlled machine may deliver electromagnetic energy sufficient to cause a first change in a material at least partially contained within an interior space of the CNC machine. A feature of the material may be imaged using at least one camera present inside the interior space to update a position of the material, and the moveable head may be aligned to deliver electromagnetic energy sufficient to cause a second change in the material such that the second change is positioned on the material consistent with the first change and with an intended final appearance of the material. Methods, systems, and article of manufacture are described.