SHODA TECHTRON CORP. Patent applications |
Patent application number | Title | Published |
20100317265 | CHAMFERING APPARATUS FOR CHAMFERING GLASS SUBSTRATES - A chamfering apparatus is used to chamfer a peripheral edge of a glass substrate. The chamfering apparatus includes a grindstone having a cylindrical hollow end portion; a grindstone driving unit that rotates the grindstone around an axis of the cylindrical hollow end portion; a substrate rotation-driving unit that rotates the glass substrate around either one of an axis of the outer periphery and an axis of the center circular hole; and a pressing unit that presses the grindstone to the glass substrate such that an annular end surface of the grindstone contacts with an edge of either one of the outer periphery and the inner periphery of the glass substrate while the cylindrical hollow end portion of the grindstone faces with one of the outer periphery and the inner periphery of the glass substrate. | 12-16-2010 |
20090104853 | METHOD OF MANUFACTURING DISK SUBSTRATE - A method of manufacturing a disk substrate includes a disk substrate forming step of forming a disk substrate; and an outer chamfering step of chamfering an outer edge of the disk substrate. The outer chamfering step includes chamfering the outer edge by bringing an end surface of a cylindrical-shaped outer chamfering grindstone having a hollow portion on its end into contact with the outer edge such that the hollow portion faces the outer edge while rotating each of the outer chamfering grindstone and the disk substrate. | 04-23-2009 |
20090042493 | CHAMFERING APPARATUS FOR CHAMFERING GLASS SUBSTRATES - A chamfering apparatus is used to chamfer a peripheral edge of a glass substrate. The chamfering apparatus includes a grindstone having a cylindrical hollow end portion; a grindstone driving unit that rotates the grindstone around an axis of the cylindrical hollow end portion; a substrate rotation-driving unit that rotates the glass substrate around either one of an axis of the outer periphery and an axis of the center circular hole; and a pressing unit that presses the grindstone to the glass substrate such that an annular end surface of the grindstone contacts with an edge of either one of the outer periphery and the inner periphery of the glass substrate while the cylindrical hollow end portion of the grindstone faces with one of the outer periphery and the inner periphery of the glass substrate. | 02-12-2009 |