Superior Metal Products, profiled in this story about robotic automation, has designed this unique plug to prevent chips and coolant from shooting back through the tube and into the bar feeder while turning DOM tubing.

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“We struggled to find a solution that offered push-point consistency for the bar feeder and positive sealing for the various tube IDs we run,” Mr. O’Connor explains. “Tapered plugs tend to dislodge and leak, and care must be taken to ensure the plug end is perpendicular to the tube. Otherwise, push rod droop or tube orientation can cause push length variation.”

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The plug features a 3D printed threaded knob, expander and nut (all are printed at the same time), as well as an appropriately sized O-ring. Once inserted into the end of a bar and tightened, it provides an effective seal and consistent push point that is perpendicular to the tube. The shop […]

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