A FIXTURE AND A PROCESS FOR DRILLING LOCKING HOLES WITH THE SAME ON A ROTOR FOR FIXING THE FANS IN TARI TYPE TURBO GENERATOR BY HORIZONTAL BORING MACHINE.

摘要

The fixture (F) for making locking holes is made of a metallic fork (1) having one side arc shaped for welding with a metal bush (12) which has a hole at the middle to a accommodate a threaded nut (4) which has a knuhe diameter (6) in one end and a threaded part (5) at the other. A plate (2) is fixed to the metallic fork (1). The plate (2) has the guiding holes to guide the drill bit. The nut (4) is disposed in the Fan holes of the rotor. The thread of the nut matches with that of the Fan holes. The fixture is clamped on the rotor by tightening the thread of the part (5) with the help of knurled dia .(6) which acts as a collar while sitting on the face of the metal bush (12). The guiding holes of the plate (2) guides the drill bit for producing the required locking holes (11) of the rotor.