| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a glass substrate for a magnetic disk, which efficiently finishes an end surface of the glass substrate for a magnetic disk with high quality at a low cost while allowing stable grinding.SOLUTION: There is provided a method of manufacturing a glass substrate for a magnetic disk in which an end surface of the glass substrate is machined by bringing a grindstone into contact with the end surface of the glass substrate. The grindstone is formed in a cylindrical shape and has a groove shape on a surface in contact with an outer periphery side of the glass substrate at its inner peripheral side and the groove shape is formed such that both surfaces of a sidewall surface of the end surface of the glass substrate and a chamfered surface between the main surface and the sidewall surface of the glass substrate may be simultaneously ground. Both surfaces of the sidewall surface and the chamfered surface of the glass substrate are ground by bringing the end surface of the glass substrate into contact with the grindstone and relatively moving the glass substrate and the grindstone so that the trajectory of the grindstone abutting on the end surface of the glass substrate may not be constant. |
