Method and Machine for Finishing a Spherically Curved Surface Portion of a Workpiece by Means of a Finishing Tool and a Dressing Tool for the Finishing Tool

A method for finishing a spherically curved surface portion of a workpiece with a finishing tool (1) having a finishing surface (2), including at least the following steps:

• finishing the surface portion of the workpiece, wherein the finishing tool (1), with at least with one part of the finishing surface (2), is brought into contact with at least one part of the surface portion of the workpiece, wherein the workpiece and the finishing tool (1) are rotatably driven;
• dressing the finishing tool (1) with a dressing tool (3) having a curved dressing surface (4), wherein the dressing tool (3), with at least one part of the dressing surface (4), is brought into contact with at least one part of the finishing surface (2) of the finishing tool (1), and wherein the finishing tool (1) and/or the dressing tool (3) are rotatably driven,
• wherein the dressing surface (4) of the dressing tool (3) has a different curvature than the spherically curved surface portion of the workpiece.