SAWING METHOD FOR STRAIGHT-GRAINED STOCK, STRAIGHT-GRAINED STOCK AND LAMINATED WOOD MADE THEREOF

摘要

PURPOSE:To make it possible to efficiently saw fellable small diameter woods, which are large in number, into straight-grained material by a method wherein the sawing into straight-grained stock is performed by producing near right-angled equilateral triangles facing to the core of material wood. CONSTITUTION:Material wood W has parts, which can not be used as decorative building material or central core 1, sapwood 2, bark 3 and knots 4. ln the part excluding the core 1 and sapwood 2, rectangular materials 5, each of which is oblong as a whole, are rough-milled at four radial positions. From the rectangular material 5, four straight-grained stocks 6 having right-angled equilateral triangles are rough- milled. Concretely, the cutting line extending nearly radially to the core 1 of the material wood W is made to be a first cutting line 6a. The cutting line, which is nearly normal to the first cutting line 6a and extends so as to have a cutting length nearly the same cutting length of the first cutting line 6a, is made to be a second cutting line 6b. A third cutting line 6c is a line, which connects the ends of both the cutting lines 6a and 6b. The sawing into the straight-grained stock 6 is performed by producing a nearly right-angled equilateral triangle having the first and the second cutting lines 6a and 6b as the short sides and the third cutting line 6c as the long side.