CHAMFERING DEVICE AND CHAMFERING METHOD

摘要

Disclosed is a chamfering device that performs chamfering between an upper surface (11) and an end surface (12) of a horizontally oriented glass plate (1) by rotating a rotary grindstone (2) about an axis extending along the vertical direction. A plurality of grooves (21) arranged parallel to one another in the vertical direction are provided in the outer circumferential surface of the rotary grindstone (2). Each groove (21) has, on the upper end side thereof, a polishing surface (21a) that is slanted so as to taper down toward the lower side. The chamfering device comprises a position changing means (4) that is capable of changing the contacting site of the polishing surface (21a) that contacts a section between the upper surface (11) and the end surface (12) of the glass plate (1).