Oil pipes are commonly used in separation systems across industries such as Oil & Gas, Aerospace, ACMV (Air Conditioning and Mechanical Ventilation), etc. Due to their large size and complex geometry, these components are inspected to identify dimensional deviations from the nominal CAD model before installation or assembly, helping to avoid fit-up issues and reduce costly rework.

Using our large part 3D inspection service, the component can be digitally captured and compared against its nominal CAD model to identify dimensional deviations across the entire surface.

Measurement Requirements
The oil pipe was scanned to capture its complete external geometry. The component was then repositioned to scan the remaining surfaces that were initially inaccessible. The scanned data was merged into a complete 3D model, aligned with the nominal CAD model, and analysed using a colour map to identify dimensional deviations across the component.

Measurement Setup
The inspection was carried out using the Hexagon Absolute Arm with AS1 Scanner, and PolyWorks software from InnovMetric. The entire setup is capable of capturing high-density point cloud data for large and complex components.

The oil pipe was securely mounted using our CMM base plate throughout the inspection to ensure measurement stability and data accuracy.

Execution
The oil pipe was scanned using the Hexagon Absolute Arm with AS1 Scanner, capturing the complete external geometry except for the base surface that was in contact with the mounting surface. After the initial scan, the component was repositioned by flipping it over to scan the remaining unmeasured areas. 

Using the PolyWorks software, the scanned data from both positions was then merged to produce a complete three-dimensional mesh of the component. The completed mesh was then aligned with the nominal CAD model, followed by a colour map deviation analysis to evaluate dimensional differences between the manufactured part and the design model.

Results and Benefits
The completed scan generated a high-resolution 3D digital model of the oil pipe. By aligning the scanned mesh with the nominal CAD model, a colour map deviation analysis clearly visualised dimensional variations across the entire component.

The colour map enables areas within tolerance, as well as positive and negative deviations from the CAD model, to be identified quickly, providing a comprehensive assessment of the component's dimensional accuracy.

With our measuring services, manufacturers can verify component geometry, compare manufactured parts against CAD data, identify dimensional deviations before installation or assembly, and support quality assurance with accurate, traceable inspection results.