Patent ID: 9561576
Date: 2017-02-07
CPC Classifications: B24B

Claim:
1. A method for performing a lapping operation, the method comprising: providing a lapping table comprising an abrasive disc defining a substantially planar abrasive surface; during a first rotation, rotating the abrasive disc about a first axis, wherein the first axis extends substantially perpendicular to the substantially planar abrasive surface; during a second rotation, rotating a workpiece about a second axis, the second axis being non-parallel to the first axis; and during a third rotation, rotating the workpiece about a third axis offset from and substantially parallel to the first axis, such that a three-dimensional outer surface of the workpiece is in contact with and lapped by the substantially planar abrasive surface of the rotating abrasive disc, wherein the first, second and third rotations are driven independent of each other.