Patent ID: 7235007

Claim:
Grinding tool comprising a grinding wheel body comprised of first and second parts detachably connected to each other, said first part being securely attachable to a grinding spindle, coaxially therewith, the grinding wheel body having a circumferential grinding surface comprising circumferences of said first part and said second part coated with an abrasive material, a space being formed on the circumferential grinding surface between said first part and said second part, at least three adjusting/positioning devices arranged on said second part at substantially equal angular displacements from each other about an axis of the grinding tool for adjusting position of said second part relative to said first part and fixing said second part in the adjusted position, said devices being substantially radially spaced from said axis, an outer centering collar disposed between said first part and said second part and being radially spaced from said axis a greater distance than said devices, wherein said second part is adjustable relative to said first part in directions of said axis while maintaining the circumferential grinding surface comprising the coated circumferences of said first part and said second part equidistant from said axis thereby to adjust width of the circumferential grinding surface.