SELF-CENTERING TURNTABLE FOR MACHINING LARGE CIRCULAR OBJECTS

摘要

A large diameter self-centering turntable for field machining having an approximately circular horizontal track, a plurality of wheels riding on and spaced about the track, each wheel being mounted on an axle horizontal to the track and radial to the circle described by the track, with each wheel being axially displaceable on its axle for a predetermined distance to accommodate out of roundness of the circular track, a bearing support holding bearing means for each axle, a circular ring, means mounting the circular ring horizontally on the bearing supports, and a drive for rotating the circular ring around the track on the wheels.