Orbital Milling

Requirement:

A specialised services and engineering company required a large diameter orbital milling machine to undertake long reach/recess milling, single point flange facing, single point boring (across the machine range) including incremental drilling for the final manufacture and machining of offshore-to-ship product buoys.

Location:

Various locations in the Middle East

Equipment:

standard OM8000-H 8m diameter orbital milling machine with additional deep boring and milling capabilities, plus machine mounted drilling equipment - Mirage HT40 drilling and boring machine.

Method:

The incremental drilling had to incorporate a unique vernier protractor into the OM8000 with an accuracy/setting capability of 10 minutes of angle. The required range of the OM8000 was selected to complete the offshore buoy specifics plus expected large diameter machining service operations across the Middle East.

A proven flatness tolerance had to be carried out (Site Acceptance Test) within a representative test piece prior to authorisation to carry out the machining operations on the asset owner`s equipment. A flatness tolerance of 0.22mm was achieved at 5.0 metres diameter and accepted to proceed.

A Mirage engineer also provided specialist support for the commissioning, set-up and operation of the OM8000, ensuring operators could maintain the machine’s accuracy during initial and final setting of the machine.

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