Integrated Processes
Vision
3D vision can be implemented in various systems to accurately locate fixture targets or part features. These fiducials are then used to perform transformations that ensure the part program is aligned with the part features. This can be a global transformation for the entire part and additional transformations for local elements.
For example, on drilling systems, it is common to have a fixture transformation and then scan individual structural elements before the skin is applied. Once the skin is up, transformations can be used so that hole locations are adjusted for each structure element, ensuring that edge margin tolerance is maintained.
For PaR's defastening system, the 3D vision process is used to accurately map the actual location of fasteners in the wing skin. The vision analysis determines the actual size and type of fastener. This information is then sorted to optimize the subsequent defastening process.
Similar to 3D vision, PaR also incorporates laser line scanners to measure the location and shape of a part. Composite parts, like stringers, often exhibit spring back, which means that the part is not in its nominal shape when it needs to be trimmed. Prior to trimming, PaR can scan the part and adaptively modify the NC paths in real time. This ensures that the part will be the correct size when installed on the aircraft in its nominal shape.
Spindle
Whether milling, trimming, or precision drilling, PaR’s precision spindle and drilling heads can be custom sized.
Our drilling heads incorporate aerospace quality spindles with precision servo-controlled feed axes to ensure a rigid arrangement that can produce the high quality holes required for critical fasteners. In addition, load cells incorporated with the feed axis ensure that thrust is monitored.
Pneumatic clamping extends a nose piece against the skin to securely press the skin to the structure eliminating inter-laminar burrs. The nose piece against the part also serves as the datum for our precision depth control and ensuring accurate countersink depths.
