Patent ID: 6448733
Filing Date: 2002-09-10
Classification: B23Q,H02K

Abstract:
An XYZ-axes table comprising:a base; a plurality of linear guiding apparatuses; a stage; an X-axis drive linear motor; a Y-axis drive linear motor; and a Z-axis drive linear motor, wherein said linear motor is structured such as to be constituted by an armature and a movable element being capable of relatively moving with respect to the armature, and said linear motor further has one magnetic pole teeth rows which are magnetically connected to one magnetic pole of said armature and are arranged so as to be separated into a first stage and a second stage in a substantially vertical direction to a moving direction of said movable element, and another magnetic pole teeth rows which are magnetically connected to another magnetic pole of said movable element and are arranged so as to be separated into a first stage and a second stage in a substantially vertical direction to the moving direction of said movable element, the first stage of magnetic pole teeth in said one magnetic pole teeth rows and the first stage of magnetic pole teeth in said another magnetic pole teeth row are alternately arranged with respect to the moving direction of said movable element, the second stage of magnetic pole teeth in said one magnetic pole teeth rows and the second stage of magnetic pole teeth in said another magnetic pole teeth row are alternately arranged with respect to the moving direction of said movable element, and said movable element is arranged between said one and another first stage of magnetic pole teeth rows and said one and another second stage of magnetic pole teeth rows.