Patent ID: 6932684

Claim:
A reciprocal blade lapping machine for sharpening cutting and shearing blades comprising, an enclosure having a rigid top and sides with drive means contained within the enclosure attached to the enclosure top, a cam arm attached to said drive means for reciprocation thereof, a lap plate having a convex upper surface mounted directly onto and rotated by said drive means, a lapping compound distribution system having feeds positioned directly above the lap plate such that lapping compound is dispersed onto the convex upper surface of the lap plate providing an abrasive media for removing parent material from a set of blades, at least one conditioning ring rotatably disposed on said lap plate, said ring having a dead weigh disposed within, impacting directly upon said rotating lap plate surface, at least one reciprocating work piece holder slideably resting upon said rotating lap plate, for alternately sliding work pieces backward and forward in a straight line on said rotating lap plate convex upper surface, wherein said work piece holder further comprising a linking pedestal on each end with said cam arm attached to one linking pedestal, permitting reversing ends when detrimental wear occurs, and a matched set of work pieces retained by the work piece holder against the convex surface of said rotating lap plate for sharpening by honing the mating cutting faces of the work pieces.