Patent ID: 7891917

Claim:
A drilling device comprising: a rotating wheel assembly for accommodating a work piece thereon, the work piece comprising a curved surface; a drilling unit movable relative to the work piece in a generally linear motion, and comprising a plurality of drilling spindles thereon; a controller for controlling the rotation of the wheel assembly and movement of the drilling unit to position the curved surface of the work piece with respect to the drilling spindles thereby facilitating drilling of the work piece through the curved surface by the drilling spindles at a plurality of locations on the work piece; and a stationary frame for accommodating the rotating wheel assembly and the drilling unit securely thereon, wherein: the rotating wheel assembly is not movable in the generally linear motion relative to the drilling unit and remains fixed with respect to the drilling unit at least during the drilling of the work piece, the rotating wheel assembly is a first wheel assembly removably attached to said stationary frame, said first wheel assembly accommodating a first work piece thereon; and said stationary frame interchangeably accommodates a second wheel assembly different from said first wheel assembly, said second wheel assembly accommodating a second work piece thereon different from said first work piece.