Breadcrumbs

Using robotics to discover smart solutions for 3D metal printing

5 February 2021

TiDA's robotic welding 3D printing system in action, using WAAM technology.

A refurbished robot, imported from the United Kingdom by TiDA Ltd. - a Tauranga-based metals research business, is being used to develop a robotic welding 3D printing system. This waste-reducing technology has exciting potential applications for many industries – like heavy engineering, architecture and even art.

The technology, Wire Arc Additive Manufacturing (WAAM), can repair, remanufacture and produce large metal components taking any shape.

TiDA’s research engineer and University of Waikato doctorate student Ben Jackson says the importance of WAAM technology has been highlighted quite significantly by Covid-19.

“New Zealand is at the end of a long, and easily disrupted, supply chain for large metal parts that are vital to our country’s infrastructure, such as for power generation, water, shipping and food processing industries. Producing parts locally cuts out long lead times and logistics issues,” says Ben.

However, not only New Zealand can benefit from this new technology. WAAM may enable a faster turnaround time for the manufacture of parts, with files sent digitally rather than shipping large parts across long distances.

What is WAAM?

“Essentially, it is standard MIG welding but using an industrial robot arm,” says Ben.

“Using complex software that’s been developed in-house, we can control the robot and the welder to build layers of weld on top of each other to make a part.”

“The part can be built from any shaped substrate; you use the robot welding technique to build the part you want completely from scratch off that surface.”

Another benefit of the technology is that WAAM can reduce waste in the manufacturing process. Parts made from a large billet of steel inevitably create offcuts. WAAM can build up material only where it is needed, so much less material is removed to produce the finished part.

While it is early days for TiDA and the robot, case study parts from overseas have included ships’ propellers, large parts for power generation like turbines, and aircraft structure components.

“We are very much scoping out and prototyping areas of application,” says Ben.

“For architecture applications we have built a number of different beam nodes which are complex joints that connect a number of beams as part of a larger structure. It’s exciting to see where the technology can go from here.”

Examples of parts made or repaired using robotic welding 3D printing with WAAM technology.

Cross-disciplinary challenges

The WAAM project provides just the kind of challenge that the University of Waikato graduate and former Tauranga Boys’ College student thrives on.

Ben cut his engineering teeth while on work placement at TiDA in the third year of his undergraduate degree at Waikato. After his placement, TiDA offered him the chance to take on a PhD project. That was in the summer of 2013 and he has been there ever since.

Today, Ben holds a Bachelor of Engineering (First Class Honours), is a research engineer at TiDA, and part-time PhD student, in a job he loves.

His work covers a range of engineering disciplines including mechanical, materials, mechatronics, automation, and software.

“These fields all overlap in metal 3D printing processes, so I’ve developed quite a versatile range of skills to tackle the engineering challenges in this field,” he says.

Working with Waikato University to develop machine-learning

Work is ongoing to develop the software, which controls the robot, to allow for great efficiency and precision. TiDA is collaborating with machine learning researchers at the University of Waikato to develop this modelling even further.

Computer science student Le Son completed a summer research project at TiDA, investigating how machine learning can be applied to the process for monitoring and control. A large amount of data is generated from the 3D printing process; Le Son is taking this data and using machine-learning methods to try to model information about the part being printed.

“Every part we have printed we have used a new method of motion control and a new method of how the weld is laid down,” says Ben.

“As we print one part, we recognise shortcomings and areas for improvement in that process and come up with new ideas which are moved on to another iteration. We use this practical experience of making the parts to feed back into the software and the process development.”

Le Son, who is in his third year of study, says the summer internship has been a highlight of his time at Waikato.

“Apart from the new skills I’ve developed in image processing, I believe the workplace experience I’ve gained at TiDA will make me more employable once I’ve graduated,” he says.

Team TiDA: Simon Barker (Commercial Manager), Le Son (University of Waikato summer research student), Ben Jackson (Research Engineer), Mike Fry (CEO), Aamir Mukhtar (Research Engineer).

Team work makes the dream work

Each day brings a new challenge for the TiDA team of four.

The company was formed to help New Zealand companies develop titanium metallurgy products, and provides research capability for other metals, ceramics and composites. It works on a variety of projects, many funded by the Ministry of Business, Innovation and Employment (MBIE), and actively collaborates with Callaghan Innovations, GNS Science, the University of Waikato and other tertiary providers.

“Our work involves bringing new technologies into the country where we introduce them to the New Zealand market, develop them, see what the business case is and then, potentially, spin out into production,” says Ben.

Which is precisely what happened when TiDA investigated a separate metals manufacturing process called Selective Laser Melting (SLM). That led to the creation of another business, RAM3D, which now provides this as a manufacturing service to companies both here and abroad.

Ben, 29, is nearing the end of his PhD study which is based around the SLM metal 3D printing technology, investigating how material properties may be modified by introducing additives into this process.

The young engineer is proud to be part of the TiDA team and small business success story.

“We’ve got a great team and we work really well together to solve complex problems with unique solutions,” says Ben.

“Tauranga offers so many opportunities in the engineering and robotics fields - I couldn’t think of a better place to be.”


Latest stories

Related stories

New Pro Vice-Chancellor focused on bringing a human dimension to tackle some of the big problems of our time

Professor Patrick Leman has been appointed Pro Vice-Chancellor to the Division of Arts, Law, Psychology…

Scholarships awarded to University of Waikato Tauranga campus students

A group of new and returning University of Waikato students gathered at the Tauranga campus…

Waikato marine scientists uncovering secrets to healthy estuaries

University of Waikato PhD students are carrying out important research into New Zealand estuaries in…

James Brott

Waikato engineering student lends technical skills to help restore historic wharf in Tokomaru Bay

The restoration of the semi-derelict Tokomaru Bay Wharf north of Gisborne has gained strong support…

Newly promoted academics

New Professorial Appointments for Waikato

University of Waikato Vice-Chancellor Professor Neil Quigley has announced academic promotions for one new Professor…

Sarah Bahr

Applying machine learning knowledge on campus to reduce carbon emissions

Sara Bahr started her Summer Research project not knowing anything about industrial steam boilers. Now…

Kura Paul Burke

Using cabbage tree to grow Kaimoana – science through a Mātauranga Māori lens

Tauranga-based Associate Professor Kura Paul-Burke is passionate about scientific research through a Mātauranga (Māori Knowledge)…

Waikato Masters graduate and biosecurity champion dives into new role

Yanika Te Paea Reiter (Ngāi Tūhoe) graduated with a Master of Science (Research) in Biological…

Dressed in rainbow, Jake finally makes it to graduation day

Jake Angus (Ngāi Te Rangi, Ngāti Ranginui, Ngāpuhi and Tainui), fulfilled a long-held dream when…

Dr Shen Hin Lim

Researcher and engineering lecturer to chair leading Robotics group

A leading apple fruitlet thinning automation expert has been appointed chairperson for a national robotics…

Aquaculture economy a lucrative industry for the Bay of Plenty

A brand-new aquaculture facility is now operating in Tauranga thanks to a $13 million algal…

University of Waikato marine scientist awarded women’s global fellowship in climate change

Dr Shari Gallop, a marine environmental scientist and University of Waikato Senior Lecturer based in…