Patent ID: 6552811
Filing Date: 2003-04-22
Classification: H01L

Abstract:
A cutting blade detection mechanism for a cutting machine, which has a blade passing gap into which a cutting blade for cutting a workpiece held by a workpiece holding means for holding the workpiece passes, a light emitting means, and a light receiving means both of which face the blade passing gap, whereinthe mechanism comprises cleaning water supply nozzles for supplying cleaning water to the end surfaces of the light emitting means and the light receiving means and air supply nozzles for supplying air to the end surfaces of the light emitting means and the light receiving means, respectively, and wherein the openings of the air supply nozzles are arranged adjacent to the light emitting means and the light receiving means, and the openings of the cleaning water supply nozzles are arranged behind the openings of the air supply nozzles, respectively.