Practical guidance on 3D laser scanning, laser tracking, dimensional inspection, alignment and measurement strategy for complex industrial applications.
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3D Metrology— 8 articles
Laser trackers have become an important measurement tool for large components, tooling, machinery and assemblies that can be difficult or impractical to measure with conventional stationary inspection equipment.
CAD defines engineering intent. Manufactured hardware exists in the physical world. Metrology connects the two — through dimensional verification, deviation analysis, and engineering feedback that supports manufacturing decisions.
Large-scale metrology requires more than accurate instruments. Learn how thermal effects, gravity, reference networks, and measurement geometry affect large-volume dimensional measurement.
Laser tracker accuracy is not a single number. Instrument specifications, measurement distance, geometry, temperature, target configuration and measurement strategy all contribute to the uncertainty of a completed field measurement.
A laser tracker can measure points with high accuracy across large working volumes, but collecting coordinates is only part of the job. For the measurement data to be useful, every point must relate to a meaningful coordinate system.
There is no single metrology tool that is best for every measurement problem. The right approach depends on required tolerance, measurement volume, geometry, and what the resulting data must accomplish.
3D scanning and photogrammetry are both capable of creating useful three-dimensional measurement data, but they do not solve every measurement problem in the same way. The right choice depends on size, tolerance, geometry, access, and the engineering decision involved.
Both 3D laser scanners and laser trackers capture dimensional data, but they serve different purposes. Understanding the tradeoffs helps you select the right tool for your measurement challenge.
Tell IMS what needs to be measured, inspected, aligned, scanned, verified or reconstructed. The more IMS understands about the application, geometry, tolerance, location and required deliverable, the better the team can evaluate the project and recommend an appropriate measurement strategy.
