Tool Design for Unique Tubular ShapeOne major advantage of Haven’s Dual-Blade shear cutoff technology is the ability to cut a variety of tubular shapes. Haven has been presented with many clamp die design challenges over the years, but none quite like this one. This asymmetrical figure-8 part is used in off-road recreational vehicles. The part could be circular saw cut, but due to high volume requirements, the customer would save a lot of money cutting it on their existing Haven Model 873 cutoff. Haven engineers were able to figure the correct point of entry for the shear blade, but knowing how all the remaining surfaces would shear was a challenge. At one angle, the top half of the part would shear properly, but the lower half was at risk of collapsing or deforming. Turn the part on another angle and the results could be the opposite. With the help of AutoDesk Inventor, the engineers were able to model a pre-determined shear path that had the best chance of succeeding.

The application required testing before the customer could commit to switching their production over to the Haven cutoff. Haven manufactured a set of production ready clamp dies for the test. With a few tweaks to the shear blade profile, the part sheared successfully, with no deformation and very little burr. The only charge to the customer was for the set of dies. Haven prides itself in being there for our customers. Their success is our success.

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