SAW BLADE FOR PREVENTING UNDERCUT

摘要

PURPOSE: A saw blade is provided to prevent an undercut preventive segment and a general segment from being broken or replaced through including an expansion slot for sludge discharging slots. CONSTITUTION: A rear surface of a general segment (54) contains a narrow slot (55) for having a narrow void (n) to discharge sludge. A rear surface of an undercut preventive segment (56) contains a wide void larger than the narrow slot. Moreover, the undercut preventive segment contains a wide slot (57) to discharge sludge. In case of cutting an asphalt or concrete by an undercut preventive saw blade (50), scrap of the cut material generates centrifugal force according to rotating speed of the saw blade. Herein, the wide slot conveniently discharges larger amount sludge than the narrow slot. Thus, the sludge is conveniently discharged at the rear surface of the undercut preventive segment for preventing undercut of the general segments located at a rear direction of the undercut preventive segment.