Importance

Loading Importance Indicators...

Abstract

A peripherally driven veneer lathe employs a knife with an improved shape which increases the deflection resistance of the cutting edge and improves its cutting ability. A cutting edge (7c) is positioned on the flank side a predetermined distance (H) away from a point (X) of intersection of an extended plane of a cutting face (7a) and that of a flank (7b) of a knife (7) toward the downstream of the rotation of a log. The cutting face immediately following the cutting edge (7c) is formed as a connecting curved surface (7d) coinciding with a concentric arc distanced from the trajectory (G) of rotation of piercing projections (4a) of a peripheral-drive member (4) with a predetermined gap (S). Preferably, the angle (.alpha.) formed by a line (D) tangent to the connecting curved surface (7d) at the cutting edge and the flank (7b) is roughly equal to the sharpness angle (.beta.: 18.degree. to 25.degree.) of the conventional knife.

Loading the Abstract Image...

First Claim