Polishing device, processing method of polishing member, modification method of polishing member, shape processing cutting tool, and surface modification tool

A method for processing a polishing member, the method comprising:

• bringing a shape-processing cutting tool into contact with a polishing surface of the polishing member, wherein
• the polishing surface is shaped in conformance with a shape of a portion to be polished of a workpiece, and
• the shape-processing cutting tool has the same shape as the portion to be polished and processes the polishing surface to be shaped in conformance with the shape of the portion to be polished.

A method for modifying a polishing member, the method comprising:

• bringing a surface modifying tool into contact with a polishing surface of the polishing member, wherein
• the polishing surface is shaped in conformance with a shape of a portion to be polished of a workpiece, and
• the surface modifying tool has the same shape as the portion to be polished and modifies the polishing surface to be shaped in conformance with the shape of the portion to be polished.