Patent ID: 6082010
Filing Date: 2000-07-04
Classification: B23Q,Y10S

Abstract:
A stage apparatus for receiving variously sized workpieces, comprising:a base having an upper surface;a stage rectilinearly movable on the upper surface of said base;a rotary table rotatably positioned on said stage, said table comprising a bottom surface and means for receiving a workpiece;rotation guiding means placed at the bottom surface of said rotary table for guiding the rotation of said rotary table;a receiver formed at the center of said stage for receiving said rotation guiding means;rotating means for rotating said rotary table on said stage, said rotating means including:a plurality of first stage inductors formed on the upper surface of said stage, anda plurality of first stators formed at the bottom surface of said rotary table around said rotation guiding means, wherein said plurality of first stage inductors cooperate with said plurality of first stators to generate rotational force for rotating said rotary table on said stage; anda plurality of first air outlets on the upper surface of said stage for providing air to function as a bearing when said rotary table rotates on said stage, wherein said first air outlets and said receiver are adapted to be connected to an air compressor.