'an improved boring arrangement with a boring bar having a supporting flange and collars for reverse boring operation in rotors and casing of steam turbine.'

摘要

The present invention relates to an improved boring arrangement with a boring bar (1) having a supporting flange (4) and collars (6). The boring bar is inserted into the supporting flange and to the spindle of the machine. The spindle is clamped to the machine head of the machine hydraulically. The supporting flange is fixed to the spindle by bolts (5) and is disposed for supporting and guiding the boring bar. The boring bar (1) is provided with two collars (6), one for acting as a mechanical stop for the flange and the other as a mechanical stop for the boring bar for going further in the spindle. A cutting tool is disposed on the boring bar for machining reverse boring operation.