ADDITIVE MANUFACTURING is the magazine devoted to industrial applications of 3D printing and digital layering technology. We cover the promise and the challenges of this technology for making functional tooling and end-use production parts.
Issue link: https://am.epubxp.com/i/852157
AUGUST 2017 Additive Manufacturing 12 TAKING SHAPE With nearly 30 years of experience using 3D printing for prototyping work, the Ford Motor Company is now throwing its weight behind bringing AM into functional automotive applications. Over the past few years, it has supported a dedicated additive manufacturing research program aimed at developing potential AM applications. Headed by Ellen Lee, technical leader, that program has a short-term goal of applying AM technologies today for tooling, fixtures and manufacturing aids. But long-term, says Lee, its goal is to "advance the technology to bridge gaps for durable automotive compo- nents." I recently had the chance to talk with Lee about this. The various gaps she and others in Ford are working to address include: • Durability. The ability to build robust com- ponents that will meet or exceed all of Ford's requirements will be necessary to expand the scope of AM's application in the auto industry. • Materials. Lee notes that the majority of materials available for AM have been developed for prototyping or for medical and aerospace applications. Automotive-grade materials are essential to help make AM viable for this industry. • Scale. Current AM technologies lack the size and speed to enable volume automotive applications. • Supply chain. No robust automotive supply base exists for AM parts. Internally, Ford is working to solve these challeng- es through its own R&D; capabilities. Team members are discovering what properties are necessary in functional AM components for vehicles, developing novel applications for new materials, and experimenting with postprocessing techniques. As part of internal design challenges, Ford engineers propose part designs for niche applications using 3D printing, thereby pushing out additive thinking to the broader organization. All this moves additive manufacturing closer to the production floor. But the company realizes it will not bridge the gaps alone. That's why Ford has part- nered so closely with AM suppliers. "We want to get in early enough to give feedback on things like capabilities, HMIs and materials," says Lee. To get the equipment and materi- als necessary for automotive AM, the company is compelled to provide the automotive-industry perspective in all these areas. These partnerships provide early feedback to machine builders while also allowing Ford to grow its own knowledge base. For example, in 2014 the company partnered with Carbon to test the Continuous Liquid Interface Production (CLIP) technology. Another recent instance of such a partnership is Ford's collaboration with Stratasys in the alpha stages of developing the Infinite Build 3D Demonstrator (a part made with this system is pictured above). This 3D printing system uses thermoplastic extrusion to print on a vertical build platform. By orienting the Z axis parallel to the floor, the ma- chine offers "infinite" Z printing height. Short-term applications for this technology are the creation of tooling and prototype parts. Lee recognizes that automotive manufacturing is just one perspective and one market that additive manufacturing serves; other industry segments will have different needs. But voicing those varied needs and working to solve the problems they present is the best way to ensure that AM technology advances in ways that are truly useful. Ford Crossing Bridges to Additive Manufacturing in Automotive Production By Stephanie Hendrixson The center console seen here was built on the Infinite Build 3D Demonstrator from Stratasys, a 3D printer that orients the Z axis parallel to the floor for virtually unlim- ited part height. Further development of AM materials and technologies will enable the additive manufacturing of larger functional parts.