Patent ID: 7036408

Claim:
A lens cutting lathe comprising: a base; a lens support mounted to said base for supporting said lens and spinning said lens about a lens rotational axis, said lens support being transversely moveable relative to said lens rotational axis; a plurality of shuttles for mounting respective cutting tools mounted to said base in side by side arrangement far movement toward and away from said lens along respective generally parallel shuttle paths; said plurality of shuttles being reciprocally movable by respectively actuators mounted to said base, said actuators being arranged to move some of said plurality of shuttles in a direction opposite to a remainder of said plurality of shuttles; and, said plurality of shuttles being of similar mass and disposed and moved in a manner to maintain a generally fixed center of mass whereby movement of said some of said shuttles in a given direction substantially cancels linear forces imposed on said base by movement or said remainder of said shuttles in the opposite direction.