Patent ID: 7022000
Filing Date: 2006-04-04
Classification: B24B

Abstract:
1. A wafer processing machine comprising: a turntable which is turnably arranged; a plurality of chuck tables which are mounted on the turntable and have a holding surface for holding a wafer; a grinding means for grinding a wafer held on the chuck table; and a multipurpose polishing means that is held on the chuck table and polishes the ground surface of a wafer ground by the grinding means wherein the multipurpose polishing means comprises a mounter for detachably mounting a polishing tool, a spindle unit for rotating the mounter, a spindle unit support means for supporting the spindle unit in such a manner that the spindle unit can move in a direction perpendicular to the holding surfaces of the chuck tables and in a direction parallel to the holding surfaces of the chuck tables, a first polishing-feed means for moving the spindle unit in a direction perpendicular to the holding surfaces of the chuck tables, and a second polishing-feed means for moving the spindle unit in a direction parallel to the holding surfaces of the chuck tables, and wherein a water case for receiving processing water supplied to a wafer, held on the chuck table, is arranged around the turntable, an annular sealing portion projects from the under surface of the outer peripheral portion of the turntable, and an annular sealing groove into which the lower end of the sealing portion is fitted is formed in the water case.