A HOLDING CHUCK FOR A TIRE-WHEEL WITH A CHATTER-SUPPRESSING DEVICE

摘要

A holding chuck has a clamping device for firmly holding the tire-wheel in the position aligned with a center axis of a holding chuck. Chatter-suppressing dampers are disposed on an intermediate plate fitted around the chuck. The dampers are disposed on circles concentric with the center axis of the holding chuck. Each of the dampers has a damping rod extending in the direction parallel to the center axis and abutting a rim of the wheel. A damper cover is disposed between the rim of the wheel and the dampers and fastened to the holding chuck. The damper cover has slot holes disposed-on a circle concentric with the center axis of the chuck which allow the damping rods of the dampers disposed on only one of the concentric circles to extend therethrough and abut the rim of the wheel.