A grinding tool includes a substrate having a surface provided with a plurality of openings, and a plurality of grinding studs. Each of the grinding studs includes a stud portion and an abrasive particle attached to each other, the stud portions being respectively attached into the openings, and the abrasive particles protruding outward from the surface, each of the abrasive particles having a pattern cut across a tip thereof to define multiple apexes adjacent to one another. In some embodiments, methods of fabricating a grinding tool are also described.

Disclosed herein is a cutting apparatus including a moving unit for moving a spindle to position a cutting blade, a rotary dressing mechanism for rotating a dressing grindstone on a rotational shaft parallel to the spindle, and an optical sensor for detecting the position of the outer periphery of the dressing grindstone. The cutting blade is positioned with respect to the rotary dressing mechanism depending on the position, detected by the optical sensor, of the outer periphery of the dressing grindstone, and the cutting blade is dressed by cutting into the dressing grindstone by a predetermined cutting distance.

Disclosed herein is a cutting apparatus including a moving unit for moving a spindle to position a cutting blade, a rotary dressing mechanism for rotating a dressing grindstone on a rotational shaft parallel to the spindle, and an optical sensor for detecting the position of the outer periphery of the dressing grindstone. The cutting blade is positioned with respect to the rotary dressing mechanism depending on the position, detected by the optical sensor, of the outer periphery of the dressing grindstone, and the cutting blade is dressed by cutting into the dressing grindstone by a predetermined cutting distance.

The present disclosure relates to a method of dressing a tool which can be used for the gear manufacturing machining of a workpiece on a dressing machine, wherein the dressing takes place with line contact between the dresser and the tool; wherein a specific modification of the surface geometry of the tool is produced in that the position of the dresser with respect to the tool during dressing is varied in dependence on the tool width position.

A grinding method includes a first grinding step of executing grinding feed of a rough grinding unit and grinding the workpiece to a predetermined thickness while supplying grinding water with a first grinding water amount that allows suppression of wear of grinding abrasive stones and a second grinding step of, after executing the first grinding step, promoting dressing of the grinding abrasive stones to prepare for processing of the next workpiece through executing grinding feed of the rough grinding unit and grinding the workpiece to the finished thickness while supplying the grinding water with a second grinding water amount that increases wear of the grinding abrasive stones and promotes self-sharpening through reduction relative to the first grinding water amount.

A grinding method includes a first grinding step of executing grinding feed of a rough grinding unit and grinding the workpiece to a predetermined thickness while supplying grinding water with a first grinding water amount that allows suppression of wear of grinding abrasive stones and a second grinding step of, after executing the first grinding step, promoting dressing of the grinding abrasive stones to prepare for processing of the next workpiece through executing grinding feed of the rough grinding unit and grinding the workpiece to the finished thickness while supplying the grinding water with a second grinding water amount that increases wear of the grinding abrasive stones and promotes self-sharpening through reduction relative to the first grinding water amount.