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Reverse Engineering capabilities at Cammpro

Reverse Engineering capabilities at Cammpro

How can a damaged gear like the one below be replicated within 3D Design software, when 75% of the teeth are either damaged or missing?

Gear Scan 1

The answer is 3D scanning and reverse engineering. The team at Cammpro are the experts when it comes to this. Using 3D scanning, reverse engineering, and the most up to date 3D CAD software, they were able to complete the task, and manufacture the new gear. Sometimes 3D scanning is not as simple as it may seem, Cammpro used some very unconventional engineering methods to successfully 3D scan the difficult gear. The below 3D printed parts that were manufactured at Cammpro came in very useful:

Gear Scan 2

The 3D scanner used was the Einscan Pro HD which is available as a service and to purchase from Cammpro, found here:

The Einscan Pro HD uses structured light to 3D scan, the light is projected from either side of the scanner then the camera at the center picks up the visible defermed shape.

Gear Scan 3

The object is then rotated on the turntable and the 3D image is captured.

Gear Scan 4

The scanned surfaces are then edited to remove the 3D printed parts:

Gear Scan 5

Not all the objects surfaces were required for scanning, Cammpro uses Geomagics software where the object can be edited to fully encapsulate all the model, or as in this case only the external curves were required:

Gear Scan 7

The curve was then exported as a STEP file and imported in 3D CAD software:

Gear Scan 8

The Engineers at Cammpro use Autodesk Inventor, so now the curve could be used to reverse engineer.

Firstly, the Inside and outside diameters were created:

Gear Scan 9

Then the most intact tooth was replicated:

Gear Scan 10

Then patterned:

Gear Scan 11

Finally, the part extruded to make a full 3D model:

Gear Scan 12

And Machined at Cammthane:

Gear Scan 14

Completed by Gavin Biggs – Cammpro Engineer

For the full story look at the Cammpro blog here

GAVIN biggs