Importance

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Abstract

The device has a rotating grinding surface and a receptacle into which a spinning cot to be ground is inserted. The receptacle is advanced in a direction toward the grinding surface until the spinning cot inserted into the receptacle contacts the grinding surface. A size determination device for determining the size of the spinning cot is provided, wherein the size determination device has distance sensors and a computing unit for deriving the size of the spinning cot. The distance sensors operate with measuring beams that have an orientation such that the measuring beams impinge on an outer peripheral surface of the spinning cot inserted into the receptacle on at least three points that are spaced apart from one another in a circumferential direction of the spinning cot.

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First Claim