Inner diameter grinding wheel and grinding apparatus using the wheel for grinding a cylindrical workpiece

A grinding apparatus using an inner diameter grinding wheel (4) to grind a cylindrical workpiece (12), the apparatus comprising:

• a grinding wheel axle support cylinder (5) for supporting a sleeve-shaped grinding wheel axle (6) on which said inner diameter grinding wheel (4) is mounted, said inner diameter grinding wheel (4) being provided with a plurality of annular grinding grooves (13) in its inner peripheral surface, wherein said sleeve-shaped grinding wheel axle (6) is rotatably mounted in said grinding wheel axle support cylinder (5) and is provided with an upper surface on which said inner diameter grinding wheel (4) is fixedly mounted;
• a rotatably driving means for rotatably driving said sleeve-shaped grinding wheel axle (6);
• a workpiece axle support sleeve (18) provided with a lower workpiece clamp (20) in its upper end, to which clamp (20) said cylindrical workpiece 912) is attracted by suction, wherein said workpiece axle support sleeve (18) is freely passed through said sleeve-shaped grinding wheel axle (6);
• said grinding wheel axle support cylinder (5) or said workpiece axle support sleeve (18) being capable of moving vertically and horizontally.