| 摘要 |
<p>A veneer lathe can be driven in such a manner that a veneer produced by cutting a log (1) is substantially free from surface scratch and can be used as a surface sheet of plywood. A rollerbar (3) drives a log (1) while pushing its peripheral surface on the upstream side of a knife (2) fixed to a knife carriage (4) for cutting the rotating log (1) in a log rotating direction. The rollerbar (3) has a large number of grooves (5a) defined in the peripheral surface (3d) thereof. The shape of the grooves (5a) in a section crossing the shaft centerline of the rollerbar (3) is set so that an angle (&thetas;3) between a tangent and a corner portion (3e) constituted by a line (3d) of an outer periphery of the rollerbar (3) and a line (3b) extending outwardly from the side of the shaft centerline of the rollerbar (3), and the line (3b) extending outwardly, is 130 DEG to 160 DEG . <IMAGE></p> |
