Burnley-based Fort Vale Engineering is a specialist in the design and manufacture of valves and fittings for ISO, gas and offshore tank containers. The company’s owner, Ted Fort OBE, started buying Okuma machining centres and lathes more than 40 years ago. An ex Rolls-Royce engineer and chairman of his company, he recently stated: “Machine tools are our artillery and we always buy the best, without exception.”

Andrew Bryce, the company’s innovation director, who joined as a machinist in the late 1980s, continues to buy Japanese-built Okuma machines from UK agent, NCMT. One-fifth of the 40 CNC machine tools in the factory are currently from that source. Most recently, he purchased an MA600 horizontal machining centre with the ability to ‘turn-cut’, Okuma’s terminology for interpolation turning. Circular movement of the machine’s X and Y axes, coupled with synchronous rotation of a turning tool in the spindle and forward feed in Z, can execute either internal boring or external turning, even on parts with highly complex features.
Process improvement engineer Stephen Maher says: “Interpolation turning is an extremely useful addition. Previously, when producing a newly designed component with a stepped cross bore containing radii, counterbores and chamfers, to generate that single profile we had to specify and purchase up to six special form cutters, and they could take typically up to six weeks to arrive.
“Now, with turn-cut, we can produce the part immediately,” he continues. “One roughing and one finishing boring bar with indexable inserts does the same work, saving on expensive cutters as well as shortening programming and cycle times. It also significantly compresses lead-time from concept to finished component.”
For further information www.ncmt.co.uk