USA TOLERANCE RINGS and Ididit, a manufacturer of custom steering columns for hot rod, race, show and specialty vehicles based in Tecumseh, MI, collaborated to develop a collapse ring for steering columns. The ring, designed to keep a driver safe in a front-end collision, is available chrome-plated or powder-coated and keeps the existing low-cost 16-gauge DOM tubing. A flanged tolerance ring with an advance wave configuration is fitted between the tubes and retained by the outer tube while the inner tube slips axially inside the ring. The target axial collapse force of 550 lb ± 100 lb is achieved while maintaining ease of assembly within components having a stack up tolerance of .020 inch.
Producing high-quality end-production metal parts with additive manufacturing for applications like aerospace and medical requires very tightly controlled processes and materials. New standards and guidelines for machines and processes, materials, and printed parts are underway from bodies such as ASTM International.
Engineers at the University of San Diego’s Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a person’s sweat.
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