The invention relates to a finishing device for removing the weld bead generated during welding of a window or door frame or frame section at the mitered surfaces, wherein the finishing device comprises a support surface for the frame or frame section and a processing arm for supporting a tool holder, and the processing arm consists of a plurality of arm elements that move in hinged fashion relative to one another but can also be fixed in place, wherein the tool holder comprises at least two cutting tools driven by a rotational drive, said tools rotating about a tool axis and at least one tool laterally next to the blade of the tool, contact sides.

The invention relates to a finishing device for removing the weld bead generated during welding of a window or door frame or frame section at the mitered surfaces, wherein the finishing device comprises a support surface for the frame or frame section and a processing arm for supporting a tool holder, and the processing arm consists of a plurality of arm elements that move in hinged fashion relative to one another but can also be fixed in place, wherein the tool holder comprises at least two cutting tools driven by a rotational drive, said tools rotating about a tool axis and at least one tool laterally next to the blade of the tool, contact sides.

A method of manufacturing a window for a display apparatus according to the present invention includes: providing, on a stage, a substrate including a foldable part bending around a folding axis extending in a first direction, and forming a groove on the foldable part. The forming the groove includes: grinding the foldable part by using a first machining wheel; grinding the foldable part by using a second machining wheel; and machining the foldable part by using a polishing wheel. The groove has at least one radius of curvature. The first machining wheel includes first abrasive grains, and the second machining wheel includes second abrasive grains less in size than the first abrasive grains.

A method of manufacturing a window for a display apparatus according to the present invention includes: providing, on a stage, a substrate including a foldable part bending around a folding axis extending in a first direction, and forming a groove on the foldable part. The forming the groove includes: grinding the foldable part by using a first machining wheel; grinding the foldable part by using a second machining wheel; and machining the foldable part by using a polishing wheel. The groove has at least one radius of curvature. The first machining wheel includes first abrasive grains, and the second machining wheel includes second abrasive grains less in size than the first abrasive grains.

This invention relates to a grinding wheel comprising a frame including a generally circular shape and adapted to rotate about a rotation axis thereof and a plurality of grinding assemblies radially located on the frame, each of the grinding assembly comprising a depth control element, a cutting element and a chip management element.

This invention relates to a grinding wheel comprising a frame including a generally circular shape and adapted to rotate about a rotation axis thereof and a plurality of grinding assemblies radially located on the frame, each of the grinding assembly comprising a depth control element, a cutting element and a chip management element.

A system for sanding a surface includes a sanding tool, a robotic manipulator to move the sanding tool relative to the surface, and a control unit operatively coupled with the sanding tool and the robotic manipulator. The control unit is operable to: (1) move the sanding tool to a sanding position relative to the surface in which an abrasive surface is in contact with the surface and a sanding force is approximately normal to the surface; (2) set one or more sanding parameters corresponding to a model material removal rate; (3) monitor one or more of the sanding parameters; (4) determine an actual material removal rate, based on one or more of the sanding parameters being monitored; and (5) modify one or more of the sanding parameters until the actual material removal rate is approximately equal to the model material removal rate.

A system for sanding a surface includes a sanding tool, a robotic manipulator to move the sanding tool relative to the surface, and a control unit operatively coupled with the sanding tool and the robotic manipulator. The control unit is operable to: (1) move the sanding tool to a sanding position relative to the surface in which an abrasive surface is in contact with the surface and a sanding force is approximately normal to the surface; (2) set one or more sanding parameters corresponding to a model material removal rate; (3) monitor one or more of the sanding parameters; (4) determine an actual material removal rate, based on one or more of the sanding parameters being monitored; and (5) modify one or more of the sanding parameters until the actual material removal rate is approximately equal to the model material removal rate.

A grinding apparatus includes a holding table for holding a wafer, a support table for supporting the holding table, a motor for rotating the support table, a frame member supporting the support table for rotation, and at least three support poles for supporting the frame member from the base. Each of the support poles has formed in the inside thereof a through-hole, a supply port which communicates the through-hole and an air supply source with each other, and an exhaust port which exhausts air having flowed through the through-hole toward the support table. Air is supplied into the through-hole to cool the support pole, and the air having flowed through the through-hole is exhausted toward the support table.

A grinding apparatus includes a holding table for holding a wafer, a support table for supporting the holding table, a motor for rotating the support table, a frame member supporting the support table for rotation, and at least three support poles for supporting the frame member from the base. Each of the support poles has formed in the inside thereof a through-hole, a supply port which communicates the through-hole and an air supply source with each other, and an exhaust port which exhausts air having flowed through the through-hole toward the support table. Air is supplied into the through-hole to cool the support pole, and the air having flowed through the through-hole is exhausted toward the support table.