GM is moving faster than some companies to seize a competitive advantage. The company has used 3D printing since 1989 for prototyping. In fact, 75 percent of the parts in the prototype of its 2020 Chevrolet Corvette were 3D-printed, and GM now has 3D printers installed in many production facilities around the world. The company is increasingly moving beyond prototyping to production-related applications like tooling.
A big test of this application came in April 2020 when GM entered into contract with the U.S. Department of Health and Human Services to deliver a 30,000-unit order for critical care ventilators, in conjunction with Ventec Life Systems, by the end of August. The company reverse-engineered part data for tooling fixtures from the original ventilator manufacturer, and started 3D printing them the next day. All 3D printed tooling used for critical care ventilators was 3D printed on Stratasys systems. When the company requires more 3D printing capacity, there is an automatic offload path to Stratasys Direct Manufacturing for parts on demand. This helps GM run at a high utilization rate for its existing machines, expanding in-house capacity when it can ensure it has a sustained need for it.
Material innovation and machine repeatability have made a difference. For example, Nylon12 Carbon Fibre is a composite material containing 35 percent chopped carbon fibre by weight, which translates to an exceptionally high strength-to-weight ratio, even in places subjected to heavy vibrations. As a result, heavy parts that would have previously required metal can now be 3D printed in polymers. And production-grade systems like the Stratasys F900 have been designed to not only perform to a high degree of precision but also consistency so that every part is as identical as possible.
“GM is making the smart investments in 3D printing to succeed in this new normal of uncertainty and disruption,” says Stratasys Americas President Rich Garrity. “As a result, GM has manufacturing lines that are more adaptable and less expensive, and products that are developed faster and better. They are a clear model for the future of additive manufacturing in the automotive industry.”
General Motors is a global company committed to delivering safer, better and more sustainable ways for people to get around. General Motors, its subsidiaries and its joint venture entities sell vehicles under the Chevrolet, Buick, GMC, Cadillac, Holden, Baojun and Wuling brands. More information on the company and its subsidiaries, including OnStar, a global leader in vehicle safety and security services, can be found at http://www.gm.com.
