Traditionally, companies use a coordinate measuring machine (CMM) to inspect a part’s basic geometry features. While that’s a good option when there are limited features to measure, it can get complicated when working with complex parts that have unique features.

3D scanning parts takes inspection to a new level.  This technique is almost always faster and better suited for complex components and assemblies where more surface geometry measurement is needed.

3D scanners fill the gaps that other measurement technologies cannot when it comes to complex part geometry and assemblies with dozens of parts. Experts know that when it comes to inspection, precision and accuracy is of the utmost importance.

Why Use 3D Scanning for Part and Assembly Inspection?

Measurement with a 3D scanner is proven to be more precise than other measurement technologies. This is because when used in proper conditions, 3D scanners remove many human elements from the measurement process, significantly reducing the risk of error. The reduced risk of human error increases the repeatability of taking highly precise and accurate measurements.

Companies that have switched to 3D scanning can attest that the level of accuracy received from scan data is for more than they could have imagined. With a wide range of 3D scanners measuring down to a sub-thousandth of an inch (some with an accuracy of 0.0009 in (0.025mm)) – you can be assured that there is a 3D scanner that can capture the level of accuracy that you’re looking for.

Accuracy, traceability to an appropriate metrology standard and repeatability of results are all important factors to keep in mind to ensure reliable results. Operator skill and experience is critical to achieving this.

How 3D Scan Data is Used for Part and Assembly Inspection

After scanning, the point cloud data collected can be processed into a digital model. This process allows for the features in the scanned data set to be identified so that reliable and accurate measurements can be taken.

3D scanning enables experts to collect data for targeted areas of a part, but perhaps more useful, these experts can collect data for an entire part. Collecting data for an entire part allows for much more than simple dimensions of key features; it can give an analysis of the manufactured part in comparison to original CAD.

3D Scan Data Deviation from Original CAD

Data of an entire part can be used to generate deviation maps that help inspect dimensions. Deviation maps are often very useful for answering questions that simple dimensions may bring up. In addition to deviation colour-maps, additional analyses, such as 2D and 3D cross-sections, boundary and edge comparison can be completed.

Furthermore, when a company provides their part’s CAD data and the corresponding geometric dimensioning and tolerancing (GD&T), experts can use advanced software to perform a GD&T alignment and inspection. This is particularly useful when showcasing a pass-fail geometry in combination with other inspection methods.

The Applied Precision 3D Experts have knowledge and tools to support 3D scanning for part inspection. See how our team can deploy leading technologies and solutions for your business – Contact us!