Adjustable Guiding Element for Optical Triangulation Sensor Hole Positioning
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Solution Overview
Problem
Conventional optical triangulation sensors face challenges in accurately and consistently positioning the planar light beam across holes of varying diameters, relying on user judgment which limits accuracy and repeatability.
Innovation Solution
A positioning device with an adjustable guiding element that includes a platform and a guiding element movable along an adjustment path, allowing the guiding element to abut diametrically opposed portions of the hole, ensuring the planar light beam is fixed across the hole's diameter, regardless of the hole's size, using a slidable or pivotable mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional guide element with a fixed body is used, then the sensor can be positioned for specific hole diameters, but the sensor distance from the hole varies with different hole diameters, limiting the range of accurately measurable hole sizes
Solution Approach 1:
The guiding element is made adjustable along an adjustment path, transforming it from a static to a dynamic structure. This allows the guiding element to move to different positions depending on the hole diameter, enabling the sensor to maintain a consistent measurement distance across a wide range of hole sizes while accurately locating various diameter holes
Solution Approach 2:
The position of the guiding element along the adjustment path is varied to change the measurement parameters. By adjusting the guiding element's position, the system adapts to different hole diameters while maintaining optimal sensor-to-hole distance for accurate triangulation measurements
2Measurement precision
If user judgment is used to position the light beam, then the device is simple to operate, but the accuracy and repeatability of measurements are limited
Solution Approach 1:
The guiding element with contact surfaces automatically positions itself by contacting the hole circumference. This self-centering mechanism eliminates the need for manual user judgment while achieving high positioning accuracy and repeatability, and the adjustable path allows adaptation to different hole sizes without increasing operational complexity
3Adaptability or versatility
If the guiding element is fixed in position, then the device structure is simple, but it cannot accommodate holes of varying diameters at the same measurement distance
Solution Approach 1:
The guiding element is designed with an adjustment path that allows it to move dynamically. This dynamic capability enables the guiding element to accommodate holes of varying diameters while maintaining consistent sensor positioning, and the mechanism remains relatively simple through the use of a linear or rotational adjustment path rather than a complex multi-axis system
Data Source
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AI summary
The invention provides a positioning device for locating a planar light beam emitted by an optical triangulation sensor across a diameter of a hole formed in a surface of an object. The positioning device has an adjustable guiding element which is capable of locating an optical triangulation sensor at the same distance away from holes have a range of diameters. The guiding element is movably mounted relative to a platform that is fixed to the optical triangulation sensor. The guiding element comprises a body which is insertable into the hole, the body having a pair of contact surfaces for contacting diametrically opposed portions of the hole, the pair of contact surfaces being opposed to each other in a direction orthogonal to the plane of the planar light beam.