METHOD AND ADVANCE DEVICE FOR EFFECTING THE ADVANCE MOVEMENT OF AT LEAST ONE TOOL SUPPORT THAT ROTATES AROUND A ROTATIONALLY SYMMETRICAL PART

摘要

The invention relates to a method for effecting the advance movement of one or more tool supports that rotate around a rotationally symmetrical part, and to a corresponding advance device. The supports are supported on the part in a manner that permits them to be fed via a leadscrew, and are rotationally driven, as a whole, by a main motor, mounted in a stationary manner, via a main transmission drive which is connected in a fixed manner to the support or to the tool support(s). According to the invention, the advance movement of each leadscrew is effected by the relative movement, with regard to the main transmission drive, of another motor-driven transmission drive that interacts with the leadscrew. The relative movement is effected by means of an advance device with which each leadscrew can be driven by another transmission drive and this drive can be driven by a stationary support motor. The housing of said support motor is rotatably mounted and is mechanically coupled to the main motor such that it can be rotationally driven by the same in a synchronous manner. The invention is provided primarily for use in the on-site machining of large shafts.