Patent ID: 6050880
Filing Date: 2000-04-18
Classification: B24B

Abstract:
A surface grinding method for a thin-plate workpiece comprising the steps of:roughly surface grinding a first surface of a thin-plate workpiece using a thin-plate workpiece surface grinding device to create a reference plane having no sori or waviness;inverting the thin-plate workpiece, the first surface of which has been roughly surface ground and, with a surface grinding device having a hard chucking plate, chucking the first surface to said hard chucking plate to roughly surface grind a second surface of said thin-plate workpiece;chucking to the hard chucking plate the first surface of the thin-plate workpiece, the second surface of which has been roughly surface ground with the surface grinding device having the hard chucking plate to further finely surface grind the second surface of said thin-plate workpiece; andinverting the thin-plate workpiece, the second surface of which has been finely surface ground and, with the surface grinding device having the hard chucking plate, chucking the second surface to the hard chucking plate to further finely surface grind the first surface of said thin-plate workpiece, wherein said surface grinding device comprisinga surface grinding element; anda holding element for holding the thin-plate workpiece to be surface ground,wherein said holding element is a soft holding element.