B - Operations – Transporting – 26 – D
Patent
B - Operations, Transporting
26
D
B26D 7/26 (2006.01) B26D 1/00 (2006.01)
Patent
CA 2283895
A blade-replaceable cutter, incorporating a disc-shape cutter body having a plurality of joining seats for replaceable blades formed on the same circumference in one side surface of an outer portion thereof; and a mechanical unit for locating and securing the replaceable blades to the joining seats, wherein the replaceable blade is formed into a single side bevel circular knife shape and having a cutting edge line which can be changed by rotating the replaceable blade around an axis perpendicular to the joining seat, and the replaceable blade is joined in such a manner that a portion of the leading end of the replaceable blade projects over the outer periphery of the cutter body, substantially overall portion of the side face of the replaceable blade which does not project over the outer periphery of the cutter body does not project over the side surface of the cutter body in a direction of the axis of rotation of the cutter and the portion of the leading end of the replaceable blade projecting over the outer periphery of the cutter body makes a positive radial clearance angle. Thus, the bookbinding cutter is enabled to be free from frequent chipping of the blade, to prevent production of cutting noise having high frequencies, to reduce a running cost, to be free from change in the thickness of the cutter when a re-grinding operation is performed, to eliminate a necessity of performing fine adjustment when a joining operation is performed and to protect cutting edges which does not concern the cutting operation from contact of cutting dust.
Itaya Seizo
Mantani Tetsuro
Tanaka Narihito
Kanefusa Kabushiki Kaisha
Smart & Biggar
LandOfFree
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