FEATURE ON CNC LATHES AND TURNING CENTRES

G-Tech invests in new Nakamura-Tome

When the turning department at Merseyside-based G-Tech Engineering was having difficulty keeping pace with demand, the company recognised it needed to reduce cycle times and lead times, and add one-hit machining that could take place lights-out. The answer to these dilemmas arrived in the shape of a Nakamura-Tome AS200LMSY turn-mill centre from the Engineering Technology Group (ETG).

As a high-precision subcontract machine shop, G-Tech Engineering has a host of machine tools from a variety of vendors, but two stand-out machinesinclude a 30+ year-old Nakamura TW10 and an ageing Nakamura WT150. Both purchased second-hand, these machines justify their place on the shop floor as they still retain their precision, productivity levels and reliability. So, when it came to buying a new machine, it was an obvious choice for the Wirral company.

Andy Kirkwood,senior production engineer at G-Tech Engineering, says: “We needed to replace a reliable but ageing two-axis chucking turning centre with something more up-to-date. We selected a Nakamura-Tome AS200LMSY to join our already mission-critical Nakamura TW10 and WT150 multi-axis turning centres.”

Undertaking a lot more one-hit machining of parts, the new Nakamura-Tome AS200LMSY saves both time and labour. 

“It also allows us to maintain demanding geometric tolerances consistently and repeatably, such as flatness concentricity of less than 0.03mm between spindle transfers over a diameter of 150mm,” says Kirkwood. “Another new feature proving invaluable is the Y-axis travel of 80mm (±40mm). This is excellent for the footprint of the workstation and saves us time by enabling us to complete a lot more milling operations in the same set-up, reducing the need for secondary milling operations.”

More information www.engtechgroup.com

Hyundai Wia CNC lathe attracts the crowds

Ward CNC returned to the MACH 2024 exhibition in Birmingham earlier this year with a double presence. Highlights included many visitors enjoying the display put on by cutting tool partner Vargus UK, which showcased a Hyundai Wia HD3100YA Y-axis CNC lathe (available in the UK from Ward CNC). The company was also delighted with visits from other lathe principals such as Gurutzpe and Takisawa Japan.

At MACH, Ward CNC was able to discuss its wide range of CNC machine tool and metalworking solutions with both new and returning customers from across the UK, resulting in much interest and many enquiries.

Ward CNC’s applications team showcased the impressive specification of the Hyundai-Wia CNC lathe, which ran live demonstrations throughout the week on the Vargus stand. Among the machine’s features are hardened and ground box guideways, plus a one-piece heavy-duty cast-iron bed for accuracy and rigidity during machining. Further features include a BMT65P turret, Y axis, C axis, driven tooling, 10″ chuck, 12-station ATC and a FANUC 0iT control with 15-inch monitor. Users can take advantage of a 760 mm maximum turning length and a swing-over-bed of 800 mm. The A2-8 spindle nose offers 3500 rpm, plus 5000 rpm live tooling speed.

Utilising a range of cutting tools from Vargus, the demonstration showcased a vast array of machining techniques, including wave-form grooving, Y-axis milling, and C-axis polar milling. Ward CNC is now in discussions with the businesses and engineers who came for a chat during the exhibition. The company holds over 40 machines in stock from seven brands.

More information www.wardcnc.com

Multi-axis turning options from Dugard

Following the announcement that the Mylas range of multi-axis turning centres will be available in the UK from Dugard, the latest machines to join the portfolio are the DY twin-spindle, double Y axis, multi-tasking turning centres. Rapidly following the UK launch of the Mylas DT series of twin-spindle, twin turret turn-mill centres, the double Y-axis configuration of the DY range presents manufacturers with more flexibility than ever before.

The arrival of the DY series with two Y axes presents new opportunities to machine shops in the aerospace, automotive, medical, hydraulics, electronics and general subcontract manufacturing arenas. Like DT models, the DY series is available in three variants: the DY42, DY52 and DY60. Each designation specifies the maximum bar turning capacity of the main spindle.

From a specification perspective, travel is 175 mm in X1/X2 axes with 240 mm on the sub-spindle, whilst Z1/Z2 travel is 450 and 500 mm respectively with ±35 mm in the Y axis. The DY42, DY52 and DY65 have a swing over the saddle of 260 mm with a maximum bar turning length of 135 and 150 mm on the main spindle and 60 mm on the sub-spindle, providing a total maximum turning length of 350 mm.

Dugard says that the DY series offers robust construction with oversize precision ground box-ways on all axes that deliver rigidity and precision with heavy-duty cutting capability. Underpinning these attributes is the stress-relieved Meehanite casting that maximises vibration dampening and supports the heavy-duty precision spindle.

Looking at the kinematics of this addition to the Dugard portfolio, front machining is supported by a 7.5/11 kW spindle motor with a BMT 45 12-station tool turret that can accommodate up to 24 tool positions.

More information www.dugard.com

WFL machines make parts at ArianeGroup

The ArianeGroup site in Vernon, France, designs, develops, manufactures and tests liquid hydrogen propulsion systems. Much of its activity revolves around propulsion for launch vehicles. The site encompasses three test benches for cryotechnic thrusters and component testing benches. In total, six WFL machines are present on the site: four M60 MillTurn and two M35 MillTurn models, all for machining rotating engine parts.

“Machines from WFL are particularly crucial as we use them to manufacture high-value parts,” states Dominique Delor, head of industrial maintenance at ArianeGroup. “We primarily require precision and good rigidity in our machines because we process hard materials that will undergo significant stress during use. Furthermore, process standardisation is part of our business strategy.”

In production, this entails working with the same machines and the same numerical control.

For Delor, this is undeniable: “It saves us time and allows all our operators to work on these machines. Our satisfaction has increased as we gained experience with machines from WFL. We have realised that they are good, sturdy and reliable machine tools. Therefore, if we were to need a new machine, we would undoubtedly opt for a MillTurn. Our colleagues in Ottobrunn, Germany, are also convinced by MillTurn machines. After visiting our production site in Vernon and the subsequent purchase of an M80, they were able to significantly reduce their production time.”

He adds: “For 20 years we’ve maintained excellent relationships with WFL. For us, in a new project, it’s always important to have assurance of functioning production. And that’s the case with WFL. Their service doesn’t stop at simply selling a machine. Implementation is also impeccable. By purchasing a WFL machine, we know everything will go smoothly.”

More information www.wfl.at/en

MTT invests in Nakamura-Tome WT150

When an ex-employee of the Engineering Technology Group (ETG) had the ambition of setting up his own business, the company provided both its blessing and support with a Nakamura-Tome machine tool. While working as an applications engineer at ETG, Mike Jerdin’s personal circumstances changed and he needed to be close to his family, not on the road as the role required. Jerdin subsequently launched MTT Engineering and bought a Nakamura-Tome WT150 multi-tasking turn-mill centre. The results are nothing short of phenomenal.

“Most start-ups begin with a second-hand machine or two, but working with Nakamura users during my 10 years at ETG meant I knew that these machines deliver a competitive edge,” says Jerdin. “I spoke with the team at ETG and they helped me with a finance and support package that you wouldn’t get from any other machine tool supplier.”

Initially having challenges acquiring a local industrial unit, MTT Engineering co-located with a fabrication business in Macclesfield – a partnership that is proving beneficial for both parties. As part of the start-up strategy, the company is offering a fast-turnaround service to the subcontract and tier-one supply chain in the local area. MTT’s early customer base is reaping the rewards of the twin-spindle, twin-turret Nakamura-Tome WT150.

“I started the business with customers that would give me their overspill work when they are running at capacity,” explains Jerdin. “However, with its twin-spindle and twin-turret capabilities, I can manufacture the parts faster, with higher precision and more cost-effectively than my clients. They recognise the benefits and profitability they are yielding from my service, so they continually provide us with more work. This service is enabling my clients to reduce their lead times and, in turn, win kudos from their customers.”

More information www.engtechgroup.com