METHOD FOR REBORING A SHAFT HAVING A COMPLEX PROFILE

摘要

A method for reboring a shaft (35) to be drilled, said shaft (35) having a hollow cavity (37) extending along a longitudinal axis, said method comprising the following steps of: · introducing a holding tube (32) into the hollow cavity (37), the tube having a diameter that corresponds to the desired precalibration diameter of the shaft (35); · injecting a resin (33) between the internal wall of the cavity (37) in the shaft (35) and the external surface of the tube (32); · withdrawing the tube (32) following the curing of the resin (33), the space (19) freed by the holding tube (32) providing a guiding function for reboring the shaft; · carrying out a first, machining reboring operation on the shaft (35) by pushing a calibration head (20) introduced along the longitudinal axis of the shaft (35) into the freed space (19); · carrying out a second, finishing reboring operation on the shaft (35) by pulling a finishing head (51) into the shaft (35) in order to machine the freed space (19) with a varying diameter.