Methods and Apparatus for Force Reduction in the Self-Piercing Riveting Process with Resistance Heating and Multi-Step Punching

Introduction Self-piercing riveting (SPR) requires a very high processing force to finish its piercing and riveting actions. U.S. auto manufacturers are hesitant to adopt SPR because of this particular disadvantage. Reducing the processing force is therefore a key factor in eventually adopting SPR for robotic automation. Technology description Researchers at the UW have developed a method to reduce the SPR processing force by elevating metal temperatures, thereby lowering the yield stress and reducing the processing force required for the SPR fastening technique. Business opportunity SPR is a simple one step joining technique that is clean and fast. Since it relies on a mechanical interlock rather than fusion, it can be used on materials and combinations of materials where resistance spot welding is difficult or even impossible. Stage of development Initial data exists for this technology. Intellectual property position This technology is available for licensing. The UW is currently reviewing this technology for worldwide patent protection.

Type of Offer: Licensing



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