Patent ID: 7815493

Claim:
An apparatus mounted to a machine having a spindle, for positioning a device near a workpiece during a machining operation, said workpiece being movable relative to a machining tool during said machining operation, wherein at least a portion of said workpiece moves along an arcuate path relative to said machining tool, said apparatus comprising: an arm coupled to said spindle of said machine and movable relative thereto to mimic movement of said at least a portion of said workpiece relative to said machining tool, said arm having a portion adapted for contact with a machined portion of said workpiece during said machining operation, wherein said machining tool rotates about an axis, wherein said axis defines a center of said arcuate path and wherein said arm rotatably oscillates about said axis such that said arm rises and falls with the workpiece along the arcuate path during said machining operation.