The catalyst behind Shirley-based Midland Precision Engineering’s investment in a Mikron HSM 600U ProdMod 5-axis machining centre from AgieCharmilles was the company’s successful tender to manufacture high precision, complex fuel system parts for a new and innovative jet aircraft prototype.

The machine was supplied with a 36,000rpm spindle with HSK-E50 interface, seven station integrated workpiece pallet changer, 170 position ATC, through spindle coolant and integrated tool breakage and tool measurement system.

Adam Ormandy, managing director at MPE comments: “The fuel system, part of a major assembly, is characterised by its complexity and features a multitude of asymmetrically positioned and different sized diameter bores.

“The fuel system was a prototype – and as such we knew that there would be a number of design modifications and reiterations that we would need to manage. To ensure we could handle these changes and meet the delivery deadlines required, as well as achieving the part accuracy and surface finish requirements, we knew we needed advanced 5-axis machine tool technology on our side. As a consequence we began our search for the optimum machine tool solution.’

As Mr Ormandy reveals, the decision to invest in the Mikron machine was made for a number of reasons: “It was important that the machine had integrated APC capability, so that we could load and set-up jobs on the free pallets whilst the machine was still running,” he says. “It was also equally important that the machine had a good sized ATC to enable such continuous machining to occur – and to give us a high degree of manufacturing flexibility and autonomy. The HSM 600U ProdMod’s small, compact footprint was also a key consideration.”

Other important issues affecting machine selection included the high speed spindle capability of the HSM 600U ProdMod, with its coolant through spindle option, and tool break and measurement system for increased process reliability. But it wasn’t just the HSM 600U ProdMod’s advanced features and options that sealed the deal.

“The jet aircraft project is prestigious and of critical importance to MPE,” Mr Ormandy adds. “That’s why, in addition to an advanced 5-axis machine tool, we were also looking for technical and applications support as well. In particular the technical assistance aspect turned out to be critical. Not only did the collaborative approach with AgieCharmilles help us agree the machining processes to be employed – but it also established the best CAD/CAM solution and helped solve the fixturing and workholding challenges also.”

As well as recently investing in 5-axis machine tool technology, the company has also made significant investment in developing and improving its manufacturing operations across the board.
These include strengthening its grinding capabilities, purchasing specific testing and measurement equipment for roundness and cylindricity, creating Lean and customer focused manufacturing cells, installing temperature controlled production zones and extending its secondary operations and services to include assembly, pressure testing, laser marking and vacuum packaging.

“Investment is critical to our continued growth and success,” Mr Ormandy concludes. “We have built a reputation in the market and with our customers for innovation, technical excellence and world class service. We can be relied upon to deliver excellent results and solutions when faced with even the most difficult and complicated of challenges and our aim is to become our customers’ partner of choice.”

These ambitions have been realised with the ongoing jet aircraft project with MPE receiving a ‘Special Recognition Award: Aero Engine Controls’ for its work. Similar accolades and recognition have also been received from MPE’s other aero-engine and medical customers.

Agie Charmilles
www.gfac.com/uk