DEVELOPMENT OF LOCATING FIXTURES FOR ROOT AND SHROUD MILLING OPERATION ON HMC MACHINES TO ACCOMMODATE ALL SIZES TANG HEIGHT OF NEW DESIGN STEAM TURBINE BLADES

摘要

The locating fixtures (14, 15) for root and shroud milling operation on HMC machines to accommodate all sizes tang height of new design steam turbine blade consist of one root locating fixture (14) and one shroud locating fixture (15). Both fixtures are fixed to the main fixture body (16) when the locating pad (3) is disposed in the locating fixture (14) for providing reference to the blade (B) at the root slot (4) for allowing the extramaterial (9) at root end disposed out of the fixture for being milled easily for maintaining the tang height of the blade.