Patent ID: 8360821

Claim:
A glass-plate working apparatus comprising: grinding means for grinding a peripheral edge of a glass plate; and grinding supporting means for supporting the glass plate whose peripheral edge is to be ground by said grinding means, wherein said grinding supporting means includes a grinding supporting table, a plurality of suction cups which are held on said grinding supporting table by being attached by suction to said grinding supporting table and suck and hold the glass plate by sucking the glass plate whose peripheral edge is to be ground, and arranging means for arranging said plurality of suction cups, respectively, at positions corresponding to a shape of the glass plate to be ground, wherein said suction cup includes a hollow member whose upper surface is covered with an elastic member for abutting against the glass plate, an abutment body for abutting against said grinding supporting table, a connecting shaft for connecting said hollow member and said abutment body, a first communicating hole for communicating with a first opening opening on a peripheral surface of the abutment body and a second opening opening on an upper surface of the hollow member, and a second communicating hole for communicating with a third opening opening on the peripheral surface of the abutment body and a fourth opening opening on the lower surface with the abutment body, wherein said plurality of suction cups each is adapted to suck and hold the lower surface of the glass plate through the second opening and to be suckingly fixed to the grinding supporting table through the fourth opening.