September 2021

A TEAM FROM the UK’s Manufacturing Technology Centre has developed a way of producing key components for electric motors using additive manufacturing (3D printing) techniques. They say the result is a motor which, despite the parts being smaller and lighter, has a higher output power. It also has fewer components, potentially simplifying supply chains, increasing manufacturing efficiencies, cutting running costs, and reducing assembly and inspection time and costs. The team, from the MTC’s National Centre for Additive Manufacturing, along with some of its electrification experts, believe the MTC is one of the first organisations in the world to achieve this. Although a 3D-printed motors have been the subject of theoretical studies in the past, they have not yet become a commercial reality. The MTC team says it has cleared a path for producing motors using additive manufacturing (AM) techniques. It has already developed a way of making motor casings that incorporate cooling channels using these techniques, and is now aiming to produce entire motors using additive manufacturing. “AM is a key enabler for developing the complex features and forms essential to improving the performance and functionality of electric motors,” explains the MTC’s chief technologist, Steve Nesbitt. “The process of manufacturing electric motors has a number of challenges including complex or manual assembly, materials that are difficult to process and which can be expensive, the need for thermal management, and the need to make the assemblies lighter. “By leveraging the capabilities of additive manufacture through product redesign,” he adds, “major benefits can be achieved in costs, waste reduction, performance and ease of manufacture.” The MTC team is now investigating further developments required for production, with the aim of overcoming potential challenges and constraints. https://ncam.the-mtc.org TECHNOLOGY n n UK team leads the way towards 3D-printedmotors Themotor produced by theMTC using 3D printing techniques has fewer components than usual, and they are lighter and smaller