| 摘要 |
<p>A method of log sawmilling capable of producing quatersawn boards, backsawn boards, trapezoidal sections and radial sector wedges for direct use and further processing, comprising the steps of: (a) sawing a log or logs into radial sector wedges with predetermined angles between the radial face, (b) separating wedges or batches of wedges for processing by separate or integrated means into backsawn boards, quartersawn boards, trapezoidal sections or further divided sector wedges. A holding apparatus to enable the practical sawing of logs to produce radially sawn wedge sectors of timber, said holding apparatus incorporating devices with a predetermined number of fingers or holding arms that: apply pressure, force and/or restrictive means to hold and support logs at both ends, hold a log in position in relation to a chosen central longitudinal axis, rotate around the same longitudinal axis as the log, hold individual sectors of the end of a log, allow sawcuts to be made along the radii of the sectors of the log to form individual wedges of timber, allow clearance for the sawblade so that a complete cut along the full length of the log can be made at the required depth, hold the wedges of timber after being sawn, release individual wedges at a determined time, adjust for length to hold logs with uneven ends or with ends that are not at right angles to the axis of rotation.</p> |
