Laser Alignment Tool for Industrial Robot Calibration
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Solution Overview
Problem
Current robotic calibration methods are complex, costly, and time-consuming, especially in applications where high precision is not always necessary, and they require recalibration for each tool change, increasing the need for simpler, more accurate, and cost-effective solutions for industrial robots.
Innovation Solution
The use of a visual datum reference tool with intersecting laser beams to define a robotic reference frame, allowing for manual or automatic adjustment of robotic tools, enabling precise calibration without the need for frequent recalibration, and reducing the time and cost associated with robot teaching and off-line programming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional robotic calibration methods are used, then measurement precision can be achieved, but device complexity and cost increase significantly
Solution Approach 1:
The patent introduces a laser alignment tool as an intermediary device that projects laser beams to define precise reference lines and planes. This mediator enables accurate calibration by providing visual reference without requiring complex measuring devices, thus resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The patent replaces traditional mechanical measuring devices with an optical-based laser alignment system. The laser projection method substitutes complex mechanical measurement mechanisms with a simpler optical field approach, maintaining calibration accuracy while reducing device complexity and cost
2Measurement precision
If traditional calibration methods are used, then calibration accuracy can be achieved, but loss of time increases due to frequent recalibration
Solution Approach 1:
The laser alignment tool serves multiple functions: it defines reference lines, establishes reference planes, and provides visual feedback for alignment. This multi-functionality reduces the need for multiple specialized tools and frequent recalibration, thereby reducing time loss while maintaining accuracy
Solution Approach 2:
The patent establishes a comprehensive reference frame using laser projections before actual robotic operations begin. This preliminary setup creates a stable reference system that reduces the frequency of subsequent recalibration activities, thereby reducing time loss
3Manufacturing precision
If complex calibration procedures are used, then manufacturing precision can be maintained, but ease of operation decreases
Solution Approach 1:
The laser alignment tool uses visible laser beams that create bright, easily detectable reference lines and planes. The optical visibility of the laser projections provides clear visual feedback that simplifies the alignment operation, making it easier to perform while maintaining manufacturing precision
Solution Approach 2:
The laser alignment tool acts as an intermediary that translates complex spatial relationships into simple visual references. By projecting laser lines and planes, it mediates between the complex robotic system and the operator, making alignment operations easier while maintaining precision
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 simplifies the calibration process, improves precision, reduces costs, and allows for the use of different robot tools without recalibration, enhancing the accuracy of off-line programs and decreasing the need for manual alignment of robots, thus streamlining industrial processes.
Implementation Method 1
a laser which emits a laser beam
Data Source
AI summary
The robot work finder calibration systems combine a visual datum reference tool with either a manual or automatic tool finder. Two different visual datum reference tools can be used with either an automatic or manual work finder. This technology enables the user to visually see a robotic reference frame, a frame in space that is relative to an industrial robot and workpiece tool that is otherwise abstract. Enabling the user to visually see the robotic reference frame on the shop floor enables adjustment of the robotic frame to the shop floor and correction of a robotic path or off-line program to enhance accuracy. Two laser beams are emitted and intersect at a tool center point. The tool center point and the laser beams are then used to define a robotic reference frame. The technology improves cost and time factors in applications where absolutely accurate robots are not really necessary.