Provided is a method of manufacturing a glass sheet (G) having a disc shape including a cutout portion (Gb) in a peripheral edge portion (Ga), the method including etching the cutout portion (Gb).

A machine for processing a screen printing frame includes an upstream end and an opposed downstream end, a grinding assembly located between the upstream and downstream locations, wherein the grinding assembly includes a first grinder configured to grind a first pattern into the screen printing frame and a second grinder configured to grind a second pattern into the screen printing frame different from the first grinding pattern.

A machine for processing a screen printing frame includes an upstream end and an opposed downstream end, a grinding assembly located between the upstream and downstream locations, wherein the grinding assembly includes a first grinder configured to grind a first pattern into the screen printing frame and a second grinder configured to grind a second pattern into the screen printing frame different from the first grinding pattern.

An optical fiber polishing machine includes at least one of a media exchange assembly and a cleaning assembly. The media exchange assembly comprises a media exchange platen configured and arranged to support polishing media and an exchange arm having a media engaging assembly configured and arranged to selectively engage the polishing media and configured and arranged to move between the media exchange platen and a polishing machine platen. The cleaning assembly comprises an arm, a housing operatively connected to the arm, a nozzle operatively connected to the housing, and at least one of a water inlet and an air inlet in communication with the nozzle. The arm is configured and arranged to move the housing between first and second positions. The second position is proximate the fixture so that at least one of water and air dispensed through the nozzle during a cleaning process contacts the fixture.

An optical fiber polishing machine includes at least one of a media exchange assembly and a cleaning assembly. The media exchange assembly comprises a media exchange platen configured and arranged to support polishing media and an exchange arm having a media engaging assembly configured and arranged to selectively engage the polishing media and configured and arranged to move between the media exchange platen and a polishing machine platen. The cleaning assembly comprises an arm, a housing operatively connected to the arm, a nozzle operatively connected to the housing, and at least one of a water inlet and an air inlet in communication with the nozzle. The arm is configured and arranged to move the housing between first and second positions. The second position is proximate the fixture so that at least one of water and air dispensed through the nozzle during a cleaning process contacts the fixture.

A grinding head includes: a guide rail; a first grinding assembly and a second grinding assembly which are located at two ends of the guide rail respectively and can move along the guide rail; and a number of filling assemblies, which are disposed between the first grinding assembly and the second grinding assembly, wherein dimensions and/or quantity of the filling assemblies are based on a width between the first grinding assembly and the second grinding assembly, wherein the filling assemblies can cooperate with the first grinding assembly and the second grinding assembly to form an entire grinding bottom face. The width of the bottom face of the grinding head can be adjusted so that the waste of grinding cloth due to grinding a thin display is panel surface by a grinding head with a wide bottom face can be avoided and the operating efficiency can be enhanced.

A grinding head includes: a guide rail; a first grinding assembly and a second grinding assembly which are located at two ends of the guide rail respectively and can move along the guide rail; and a number of filling assemblies, which are disposed between the first grinding assembly and the second grinding assembly, wherein dimensions and/or quantity of the filling assemblies are based on a width between the first grinding assembly and the second grinding assembly, wherein the filling assemblies can cooperate with the first grinding assembly and the second grinding assembly to form an entire grinding bottom face. The width of the bottom face of the grinding head can be adjusted so that the waste of grinding cloth due to grinding a thin display is panel surface by a grinding head with a wide bottom face can be avoided and the operating efficiency can be enhanced.

A grinding head includes: a guide rail; a first grinding assembly and a second grinding assembly which are located at two ends of the guide rail respectively and can move along the guide rail; and a number of filling assemblies, which are disposed between the first grinding assembly and the second grinding assembly, wherein dimensions and/or quantity of the filling assemblies are based on a width between the first grinding assembly and the second grinding assembly, wherein the filling assemblies can cooperate with the first grinding assembly and the second grinding assembly to form an entire grinding bottom face. The width of the bottom face of the grinding head can be adjusted so that the waste of grinding cloth due to grinding a thin display panel surface by a grinding head with a wide bottom face can be avoided and the operating efficiency can be enhanced.

A grinding head includes: a guide rail; a first grinding assembly and a second grinding assembly which are located at two ends of the guide rail respectively and can move along the guide rail; and a number of filling assemblies, which are disposed between the first grinding assembly and the second grinding assembly, wherein dimensions and/or quantity of the filling assemblies are based on a width between the first grinding assembly and the second grinding assembly, wherein the filling assemblies can cooperate with the first grinding assembly and the second grinding assembly to form an entire grinding bottom face. The width of the bottom face of the grinding head can be adjusted so that the waste of grinding cloth due to grinding a thin display panel surface by a grinding head with a wide bottom face can be avoided and the operating efficiency can be enhanced.

A grinding method for grinding a workpiece by use of a grinding apparatus including a holding table that holds the workpiece by a holding surface, and a grinding unit that grinds the workpiece held by the holding table by a grinding wheel having a plurality of grindstones arranged in an annular pattern includes a groove forming step of grinding the workpiece by bringing the grindstones into contact with the workpiece to form the workpiece with an arcuate groove having a depth of less than a finished thickness of the workpiece, and a grinding step of bringing the grindstones into contact with a surface side of the workpiece where the groove is formed to grind the workpiece until the thickness of the workpiece becomes the finished thickness.