Method and apparatus for grinding a glass base material

摘要

An apparatus for grinding a glass base material (40) having a core (36) and a clad (32) comprising: a grinding wheel (30) for grinding the clad (32); a measuring unit (62) for measuring an eccentricity between a center position of the glass base material (40) and a center position of the core (36) at a plurality of positions along a longitudinal direction of the glass base material (40); a design unit (66) for calculating target diameters substantially continuous throughout the longitudinal direction of the glass base material (40) so that the eccentricity becomes substantially zero for each of the plurality of positions; and a control unit (60) for controlling the grinding wheel (30) to grind the clad (32) so that a diameter of the glass base material (40) to be the target diameter substantially continuous throughout the longitudinal direction of the glass base material (40) based on the target diameters calculated by the design unit (66).