Importance

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Abstract

The present invention discloses a fixation structure for a blade body of a planing cutter, wherein the planing cutter comprises a cutter body, a blade body, and a plurality of screw connectors. The cutter body is provided on its outer peripheral surface with a cutter seat used for mounting the blade body on which a blade of hard alloy is welded, a cooperating and positioning structure is provided between the joint surfaces of the blade body and the cutter seat, and the blade body is directly threadedly connected on the mounting seat of the cutter body through a plurality of screw connectors. Such fixation structure is simple and the replacement of the blade body is convenient, and is adapted for flat planing cutters and spiral planing cutters. The present invention also discloses a spiral planing cutter which is adapted for driving devices such as manual or electric planers, wherein the spiral planing cuter comprises a spiral cutter body which is provided on its outer peripheral surface with a plurality of spiral surfaces at equal intervals and also comprises a flat and straight blade body on which a strip-shaped body of hard alloy is welded and a plurality of screw connectors through which the flat and straight blade is fixedly connected to the spiral surface, wherein a positioning structure is provided between the blade body and the spiral surface.

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First Claim