A method of processing a ferrule end face using at least one grinding wheel rotatable about a central axis and having a working surface with an abrasive element is provided. The method includes holding the ferrule stationary, engaging the end face of the ferrule and the working surface of the at least one grinding wheel, rotating the at least one grinding wheel about the central axis, and moving the at least one grinding wheel relative to the ferrule along a curve perpendicular to the central axis. Processing the ferrule in this manner imparts a convex shape of the end face of the ferrule. An apparatus for carrying out the method is also disclosed.

The present disclosure relates to abrasives surfaces located on an outer diameter of a grinding wheel to provide grinding characteristics of both coarse and fine abrasive textures. The grinding wheel has a coarse abrasive portion located at one disclosure uses a transition band formed at an interface between the abrasive surfaces, that has an abrasive coating with a gradual change in texture from a coarse surface to a fine surface.

The present disclosure relates to abrasives surfaces located on an outer diameter of a grinding wheel to provide grinding characteristics of both coarse and fine abrasive textures. The grinding wheel has a coarse abrasive portion located at one disclosure uses a transition band formed at an interface between the abrasive surfaces, that has an abrasive coating with a gradual change in texture from a coarse surface to a fine surface.

An abrasive tool includes a tool base having a supporting surface and a generally cylindrical abrasive surface layer disposed on the supporting surface. The abrasive surface removes material from a work-piece outer surface by contact therewith and by relative movement along a defined working path. The abrasive tool comprises a first axially extending circumferential portion featuring an abrasive coating selected to produce a final finish on the work piece, and a second trailing portion that tapers radially inwardly to accommodate post-grind radial expansion of the work piece.

An abrasive tool includes a tool base having a supporting surface and a generally cylindrical abrasive surface layer disposed on the supporting surface. The abrasive surface removes material from a work-piece outer surface by contact therewith and by relative movement along a defined working path. The abrasive tool comprises a first axially extending circumferential portion featuring an abrasive coating selected to produce a final finish on the work piece, and a second trailing portion that tapers radially inwardly to accommodate post-grind radial expansion of the work piece.

A composite machining tool includes a tool body with at least one cutting edge and at least one grinding region. The grinding region is located adjacent to the cutting edge such that there is a gap between the grinding region and the cutting edge and such that when the tool performs a machining action the cutting edge and the grinding region act together on a material surface.

A composite machining tool includes a tool body with at least one cutting edge and at least one grinding region. The grinding region is located adjacent to the cutting edge such that there is a gap between the grinding region and the cutting edge and such that when the tool performs a machining action the cutting edge and the grinding region act together on a material surface.

The present disclosure provides an abrasive article. The abrasive article includes a base. The abrasive article further includes a plurality of soft shaped abrasive particles distributed about the base.

A method of forming a truer in a truing where a groove of a grinding wheel used for grinding a chamfer portion of a wafer is formed by a truer having a disc-shape, wherein the method comprising: a process A for adjusting a diameter and a rough shape of the truer by a master grinding wheel for forming the truer; and a process B for forming an edge of the truer into a target shape, wherein the process A and the process B are performed by a plurality of master grooves having different shapes from each other, the plurality of master grooves being provided with the master grinding wheel or the process A and the process B are performed by a plurality of portions having different shapes from each other in at least one of the plurality of master grooves provided with the master grinding wheel.

A method of forming a truer in a truing where a groove of a grinding wheel used for grinding a chamfer portion of a wafer is formed by a truer having a disc-shape, wherein the method comprising: a process A for adjusting a diameter and a rough shape of the truer by a master grinding wheel for forming the truer; and a process B for forming an edge of the truer into a target shape, wherein the process A and the process B are performed by a plurality of master grooves having different shapes from each other, the plurality of master grooves being provided with the master grinding wheel or the process A and the process B are performed by a plurality of portions having different shapes from each other in at least one of the plurality of master grooves provided with the master grinding wheel.