This piece was made for the same research institute for which we have made several other TZM and Molybdenum pieces, but added new challenges of rigidity. The piece is about 3.75" in diameter and .750" deep with areas where the material is extremely thin and tight diameters and small angles.
The outer diameter was turned on a CNC lathe and was the only part that did not require special tooling or fixtures. For the inner diameter a special boring tool had to be made to attain the proper diameter and maintain the deep lips required to leave material for the other features as well as leave the necessary radii. The outer wall was left only about .040" thick.
The features on the top and bottom face required fixtures to be created that would keep the work piece rigid and safely support it's fragile structure. The web-like features on one side required extremely small tooling and intricate fixtures to keep the vibrations from the machining process from damaging the smallest parts of the features. The web arms which support the "floating" tap holes are only .020" thick.
To learn more about this project, or how our ability to precision machine molybdenum parts can help you with your application, please contact F&A Machine today.