TEST & MEASUREMENT FEATURE
overcome by probing the part with the RMP600 using a program created from the component’s CAD file. From this initial measurement, an alignment is created to eliminate any errors in the positioning of the part in the machine. The alignment is then uploaded to the machine control and compensations are automatically calculated to produce a part program perfectly aligned to the part. Set-up is automated, meaning that fixturing is no longer as critical in the process, any manual set-up error is eliminated and the time required to set even the most complex of components is reduced to minutes. Furthermore, elements such as
material condition, pallet loading systems and temperature, can all be accounted for at the initial stage of the machining process, reducing further the risk of producing bad parts. After metal cutting, NC-PerfectPart can confirm the accuracy of the finished component prior to it being removed from the machine tool and inspected on a CMM.
RESULTS Before the addition of the RMP600 and MSP software it would take four hours to set and machine a typical industrial gas turbine nozzle. Now that same part can
NC-Checker monthly benchmark screen
be probed, machined and checked in under two hours, so Doncasters has increased productivity by 50 per cent. On more complex components, the machining time could be up to eight hours and require the presence of a highly skilled operator to oversee the machining process. These parts are now produced in
the same two-hour cycle as simple parts, generating even greater savings. In working with Renishaw and MSP, Doncasters has improved alignment systems to achieve overall better results. The correlation between on-machine measurements, CMM results and Bluelight scanning system data is also improved. Commenting on the success,
Ollie Macrow explains: “What has happened here is a really positive story, and we would be nowhere near where we are now without the support of Renishaw and MSP.” He continues: “When we first decided to buy the machines, we sat with Mazak and said “How are we going to do this?” They didn’t think it was possible with our current set-up and then Renishaw came along and in conjunction with MSP provided the solution we needed. Our customers are giving us positive feedback as we have greatly improved our right- first-time pass rate. I genuinely feel that we would not be successfully machining castings without the help of Renishaw and MSP, the support we get from them is great; they are at the end of the phone if we call, and on-site when we need them.”
Renishaw
www.renishaw.com
INSTRUMENTATION | NOVEMBER 2017
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