Start-up subcontractor selects Citizen

Stellar Precision Components is boosting capacity at its Bishop’s Stortford facility through investment in a Cincom L20-VIIILFV from Citizen Machinery. The machine joins two existing Cincom models on site, an L32-VIIILFV and
an A20-VII.

Glenn Poleykett began his career in manufacturing in 2006 at his uncle’s firm, making components for darts on Cincom sliding-head and Miyano fixed-head mill-turn centres. He quickly realised that sliding-head lathes with driven tooling were capable of producing virtually any part, provided that it was from 32 mm diameter bar or smaller.

Today, much of the subcontractor’s throughput is destined for the aerospace, medical, electrical connector and pneumatics industries. Batch sizes range from 10 to 40,000 parts and the factory operates 24/7, with two manned shifts per day and three hours of lights-out operation during the early hours of the morning. Operator attendance is necessary for a majority of the time as many of the components that the subcontractor produces are of very high accuracy, from a general tolerance of ±0.1 mm, down to ±5 µm.

The new L20-VIIILFV has Citizen LFV (low-frequency vibration) chip-breaking functionality on both the main and sub spindle, whereas on earlier models it features only on the main spindle.

“LFV is programmable via G-codes to start and stop during any program, breaking what would normally be stringy swarf into smaller chips that cannot wrap around the tool or component,” explains managing director Poleykett.

When turning and drilling 304 or 316 stainless, aluminium, copper or plastic, Poleykett always switches on the LFV function for at least part of the cycle as it has the effect of improving production output through not having to stop the machine for swarf clearance.

For further information
www.citizenmachinery.co.uk

Expansion leads to greater efficiency

Starting out from fairly humble beginnings under railway arches in Camden, London in 1937, DYN Metal has grown into one of the largest suppliers of continuous and centrifugal cast products, specialising in standard bronzes and its own DYN processed bronzes. The company casts all of its products in-house at its Acton foundry, where the business relocated to in 1977.

Following that relocation, the family owned business recognised that simply providing cast billets for others to machine was not sustainable, so a series of investments were made to develop its own machining capability.

“We recently needed to improve productivity in our proof machining department in order to increase throughput and consistency,” says managing director Max Limbourg.

It was a combination of the ProtoTRAK control and a UK supplier for support that saw DYN Metal settle on two ProTURN lathes from XYZ Machine Tools. The machines are an XYZ ProTURN RLX 555 with a 1.75 m bed length and, the largest machine in the ProTURN range, an XYZ ProTURN RLX 780 with a 3 m bed length and swing of 780 mm over the bed.

Both machines feature the latest RX ProtoTRAK control system with its touchscreen interface and conversational programming capabilities. A key feature of the control welcomed by DYN Metal was the TRAKing capability, which allows the operator to use the electronic hand wheels to prove out the program.

“Coming from manual machines, our operator Peter had limited programming experience so it was a bit of a learning curve,” says Limbourg. “However, with support from XYZ Machine Tools he is now producing one-off components in a matter of minutes.”

For further information
www.xyzmachinetools.com

Takisawa machines available from stock

Now available from stock from TW Ward CNC Machinery (Ward CNC) is the Takisawa TT1100GC twin-spindle turning centre and the single-spindle TCC1100GA.

The Takisawa TT1100GC is a gantry-loaded turning cell with an in-built component stocking system for the lights-out machining of precision small parts. With both spindles mounted on a single-piece rigid bed casting, this machine incorporates precision hardened and ground box slideways and a high-speed servo turret.

Emphasising the speed of this machine is the ultra-fast loading and unloading of parts. Capable of loading components in 1.7 seconds, the loader is positioned at the front of the machining chamber to reduce the loading distance, while the movement of the spindle forward to the loading position further reduces component transition times.

Takisawa’s load/unload system works in tandem with a supply and discharge station that is integrated into the machine envelope to minimise footprint. The station is configurable as a three-guide bar type or a centre-pole type station with the part gripper available as a parallel or swivel type hand. In addition, the machine incorporates a peripheral modular unit that presents a measuring unit, washing unit, part positioning via camera, phase determining unit and a turnover transfer unit.

Also available from stock is the TCC1100GA. With a footprint of just 1.8 x 2 m and a high-speed loader, the TCC1100GA is a 6-inch chucking machine offering a maximum turning diameter of 220 mm and a turning length up to 171 mm with a bar capacity of 42 mm diameter. This single-spindle, single-turret turning centre has the choice of an eight-tool turret as standard, or an optional 12-tool station.

For further information
www.wardcnc.com

Rapid progress for Scottish subcontractor

A new name in Scottish subcontracting has continued its upwards trajectory and expanded its machining capacity through further investment in machine tools from Yamazaki Mazak. Aberdeen-based 247 Machining Services (247) was founded by husband-and-wife director team, John and Aileen Forrest, in 2018 after 30 years working in the steel fabrication and engineering sector. The company specialises in providing performance-critical parts for the oil and gas industry, and traditionally produces low-volume, high-value batches of components.

Having previously purchased multiple Mazak Quick Turn turning centres over the company’s three-year history, including a QT-Compact 200M and two QT-350MY machines, the Forrests have now invested in an Integrex i-400 five-axis multi-tasking machine to increase its production capabilities.

“The quality machining offered by our existing QT turning centres meant that when we were looking to expand our portfolio further, Mazak was our first choice,” says John Forrest. “We wanted to make the move into high-volume, high-quality batch machining for the oil and gas sector, and look at branching into additional industries in the future, and the Integrex fitted the bill.”

With a maximum machining diameter of 658 mm, and capable of processing in the X, Z, Y and W axes, the new Integrex is suited to 247’s ambitions to produce a wider range of more complex parts.

“Our combination of highly trained operators and cutting-edge machine tools, of which Mazak makes up the majority, have been key parts of our continued growth,” says Aileen Forrest. “These, alongside a rigorous quality control process, has meant we’ve been able to go from an empty floor to a situation where our current premises may not be large enough to service growing demand levels.”

For further information
www.mazakeu.co.uk

Largest machine tool display in four years

MACH 2022 (4-8 April, Birmingham NEC) showcases the UK’s largest display of new machinery and manufacturing technologies for four years. Key themes for the five-day show include: the revival of the manufacturing industry post-pandemic; the drive to net zero and exploiting the opportunities offered by decarbonisation; the development of innovative technologies shaping advanced manufacturing; a special focus on additive manufacturing; and a showcase highlighting the skills and expertise contained within the UK manufacturing supply chain.

James Selka, CEO of show organiser the MTA, says: “With the UK economy growing and the CBI predicting that plans for spending on plant and machinery over the coming 12 months have improved considerably, the timing of MACH 2022 could not be better. Technologies have never been more powerful and affordable; the UK has an incredible reputation for its innovative and flexible workforce, while finance assisted by government incentives is incredibly good value and widely available.”

For further information www.machexhibition.com