Thread rolling machines traditionally have no way of monitoring for die failure. During long-term use, die failure can develop as small imperfections in the surface of the die such as fissures, cracks, or fish tails in the die surface. These features produce very minimal force signatures or vibration. With vibration or acoustic based approaches, it is almost impossible to monitor when the thread is rolled on small diameter stud bolts, or other small threaded product. Our approach is unique in that it non-invasively monitors the force transfer through the die packing with extreme sensitivity. We are resolving forces related to minute failures on the die surface, measuring sub Newton force on top of 10,000-20,000 lb static roll force.
The product that is being rolled on this Waterbury #20 machine is small diameter thread products for titanium and Inconel bolts for aerospace applications. In small diameter threads, the existence of dye imperfections are failures, and can lead to product rejection, folds in the threads, or other features that are unacceptable to the end user. The ability to monitor the force in the die packing is a unique approach to being able to predict and prevent the use of worn and failed dies without operator intervention. This saves time, and saves the operating company money by preventing the manufacturing of scrap product.
This video shows several strength tests of the Wave Bolt, the best glue-in rock climbing anchor available.
The patent-pending Wave Bolt is the best glue-in rock climbing anchor available, offering tremendous shear and pullout resistance and ease-of-use not found in other designs. It is the only anchor on the market that combines the strength of glue-ins with the convenience of mechanical bolts. To resist pull-out failure, other glue-in designs rely on the glue hardening around the exterior contours of the rod. The unique design of the Wave Bolt however allows the glue to encase the exterior and interior of the bolt, truly locking the bolt within the glue, resulting in significantly higher pull test results than other brands. Because the Wave Bolt is also tapered, even in vertical placements it will not slide out of the hole – like other bolts do – prior to the glue hardening. This means the route developer does not need to waste time sitting and physically holding the bolt in place, or putting epoxy or tape over the bolt while the glue cures; just place the Wave Bolt and move on the next hole!
For more info visit www.facebook/wavebolt or email wavebolt@hoosierheights.com