Patent ID: 6511365
Filing Date: 2003-01-28
Classification: B24B,G11B

Abstract:
A method for lapping a work piece in a lapping machine having a lapping plate with a lapping face and a grain removing mechanism for removing abrasive grains from said lapping plate, said grain removing mechanism including a moving member which has a wiping face extended in a longitudinal direction and which moves, in a plane parallel to the lapping face, in the direction perpendicular to the wiping face so as to remove the abrasive grains, said method comprising the steps of:setting a work piece in position upon the lapping plate; supplying first abrasive grains to said lapping plate and lapping the work piece with the first abrasive grains; removing the first abrasive grains from said lapping plate using said grain removing mechanism; supplying second abrasive grains, whose grain size is different from that of the first abrasive grains, to said lapping plate; and lapping the work piece with the second abrasive grains.