Precision medical device machine shops leverage adaptability, nimbleness to respond to complex machining challenges.

Ability to pivot operations to quickly respond to design changes and scale-up production is key to success for medtech.

Within the dynamic medical device manufacturing sector, changes to part specifications and quantities are frequent and often unpredictable. As a result, clients require a machining partner who can nimbly and quickly adapt to design and production changes as they occur and be capable to scale up to lights-out manufacturing when needed.

“Medical device manufacturing customers may prefer large machining operations,” says Tony Doan, CEO of Halcyon Manufacturing, an advanced ITAR registered and AS-9100/IS-9001-certified machining shop based in San Jose, California. “But size alone doesn’t equate to capacity. Smaller shops can have an advantage when a client needs a machining partner to also be nimble and flexible. For our clients, the ability to adapt and problem solve is incredibly important as complex manufacturing requirements frequently evolve and change.

“Medical device machining involves a lot of low-volume, high-mix work,” Doan adds. “The reality is not every machine shop wants to take on small orders or highly complex jobs. A client needs a machining partner who really embraces this kind of work in addition to the high-volume orders.”

When evaluating the capacity of a precision machine shop, the capability to respond to changes in specifications and production quickly becomes a key factor.

Staff cross-training is one way a machine shop can improve its ability to respond to unexpected and time-sensitive machining needs. While today’s machine shops are filled with a mix of high-tech precision CNC equipment, each requires trained staff to manage, maintain, and operate.

“A lot of medical device machine shops will assign an operator to a specific CNC machine,” Doan says. “This can create a situation where a particular operator has to be available and not working on other orders, to operate a given machine.”

Having the ability to move people from machine to machine, as well as from line to line and from shift to shift, without interruption, enables a machine shop to respond to changes in demand more quickly.

At Halcyon, where they machine bar grade 6061 aluminum, brass, copper, titanium, stainless steel, and plastics, the entire staff is cross trained to work across all equipment to maximize their capability for scale up.

“We haven’t only cross-trained our team, but we all work multiple shifts, and we have the same controls throughout our shop,” Doan says. “It makes it easy for our people to be able to move around as needed. So, when a client needs something over a weekend, we don’t have to completely rethink how we’re going to schedule. We can easily plug in people for surge hours or to increase our manpower as needed.”

The company made the decision to further enhance cross-training through its selection of machining equipment. Unlike shops that purchase a variety of types and brands of CNC equipment through time, Halcyon intentionally purchases the same model of high-end 5-axis CNC machine from Doosan Machine Tools (now known as DN Solutions) with Fanuc controls as they expand. This further reduces the learning curve for their staff.

The company’s mission is to reinvent how manufacturing should be done to solve customers' problems while providing an excellent customer experience built upon accuracy, timeliness, and attention to detail. They is accomplished with a range of Doosan machine tools:

Doosan LYNC 2100LSYB – 7-axis live tooling turning center; 12 turret, 6k spindle

Doosan DNM5700S – 3-axis milling center; 40 tools, 15k spindle

Doosan DVF6500 – 5-axis milling center; 60 tools, 15k spindle

Doosan DNM4000 – 3-aixs milling center; 20 tools, 15k spindle

Doosan DVF6500 – 5-axis milling center; 120 tools, 18k spindle

Doosan DVF5000 – 5-axis milling center w/8 pallet system; 120 tools, 18k spindle

Doosan NHP5000 – horizontal milling center; 500mm, B-axis, 60 tools, 18k spindle

Nimbleness and adaptability are needed to scale up production quickly. Some machine shops such as Halcyon operate 24/7, allowing customers to connect with them outside of traditional office hours.

“Lights-out manufacturing takes scaling up production to the next level,” Doan says. “CNC operators can set up the equipment to run on its own without supervision overnight. This lights-out capability means smaller shops can maximize their capacity without adding more staff.”

The mindset that a machining partner brings to precision medical device machining is also critically important.

“It starts with the culture of the shop and the problem-solving mindset they bring to a project – particularly for complex, precision parts,” Doan explains. “You also need a machining partner to be proactive. By engaging early in the process, a medical device machine shop can anticipate and resolve machining issues before any parts are produced.”

In a recent example, Halcyon had a customer bring them what appeared to be a simple part but couldn’t find a machine shop that wanted to take the job. The part had a 6” threaded shaft with a hex head. There was an 832 thread across the outside diameter (OD) of the shaft.

“Most lathes aren’t able to cut those threads across 6",” Doan says. “We had to get creative since we couldn’t use round stock, which is generally used when cutting OD threads.”

The team determined how to form the threads while accounting for growth that occurs when threads are formed on plate steel to meet the tight requirements. For it to run on a CNC machine, they had to create a modified thread using a cut die to create a formed thread.

“We took the challenge on and were able to meet the client’s deadlines with parts that met spec when no one else could do it,” Doan says. “It takes more than the equipment and know-how; it also means really having an appetite to take on these kinds of complex challenges.”

Nimbleness and adaptability in precision machining represents a key consideration for medical device clients as they seek partners to provide solutions to their complex design problems and production scale-up needs. Through cross-training, lights-out manufacturing, and a problem-solving proactive mindset, smaller machine shops are well-equipped to meet the demand.

DN Solutions https://www.dn-solutions.us

Halcyon Manufacturing https://www.halcyonmfg.com

Effective June 2, 2022, Doosan Machine Tools changed its name to DN Solutions, signifying a new start after the merger with DN Automotive which became its new parent company in January this year.

The D in DN alludes to the 45 years of history of trust built by Daewoo and Doosan, the predecessors of DN Solutions, along with DTR Automotive, the predecessor of DN Automotive. N represents Now & New, the will of the DN Group to open new paths by constantly taking on new challenges now rather than being complacent about past achievements. It also means that it will begin a new and bigger era empowered by the strong synergy between the two companies that have now become one family.

DN Solutions is committed to being reborn as a true global manufacturer under the new name by strengthening distinctive competitive advantages over current growth engines, and proactively building a presence in the areas of future growth through aggressive investment in expanding manufacturing capabilities and sustainable management for social responsibility. It will closely work together with DN Automotive, its controlling shareholder, in identifying new growth engines to become a solutions provider for the global manufacturing industry.