PAR Systems

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.


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.

Custom End Effector

From drilling and trimming to defastening to part marking and inspection, PaR Systems has developed a wide variety of custom end effectors. As processes are developed and evolve, we continue to engineer new end effectors. Our team of experts is experienced in automating processes to maximize productivity.

Examples of Custom End Effectors

Configurable Fixtures

Dedicated tools or fixtures for each type of part can be expensive and takes up time and space. PaR can provide active and passive configurable tools from flat to highly contoured leading edges.  

Passive fixtures can be set by the processing machine to keep the fixturing simple and as cost effective as possible. Alternatively, active fixtures provide automatic reconfiguring of the fixture to accommodate each part.

Robotic fixtures feature the benefits of active fixtures but with unsurpassed dexterity when there is a large number of parts with vast ranges of shape and contour.


Our systems are proven dependable in real production operations, but should you need help, our certified service personnel are available 24-hours a day, every day of the year. Need assistance? Please contact us for support.

Interested in working with PaR? We'd love to hear from you.
Back To Top