RESINOID ROTARY ELASTIC GRINDING WHEEL

PROBLEM TO BE SOLVED: To provide a resinoid rotary elastic grinding wheel in which the fixing setting operation on a driving shaft is simple, the fear of losing a reinforcement pad is eliminated, and the grinding wheel can be used commonly to two driving systems. SOLUTION: An elastic and disk-like body 1 composed of a resinoid grinding wheel, and a disk-like reinforcement pad 2 supporting the body 1 from the rear side are provided, and a first installing hole 4 is provided at the center of the body 1. To the reinforcement pad 2, the second installing hole 5 concentric to the first installing hole 4, and having a diameter smaller than the hole 4, and a ring projection 6 concentric to the installing holes, are provided at the center. The ring projection 6 projects to the body 1, and it is installed and connected in the hole 4 under the friction engaging condition, and in such an installing and connecting condition, the second installing hole 5 can be applied to fix and set to a grinder. The reinforcement pad 2 can be removed from the body 1 by releasing the friction engagement, and in the condition removing the reinforcement pad, 2 the hole 4 is made in the structure to apply to fix and set to the grinder.