| 摘要 |
<p>An apparatus and method is provided for bucksawing a log while the log is being directed in an endwise, downstream direction along a path of travel. The apparatus includes: (1) a saw for sawing the log; (2) apparatus for displacing the saw into and out of the path of log travel to effect cutting of the log; (3) a clamp for releasably gripping the log; (4) apparatus for reciprocating the saw and the clamp along the path of log travel; and (5) a control including apparatus for causing the saw to be displaced into the path of log travel only when the saw is traveling at the same velocity as the log, apparatus for causing the clamp to grip the log only when the clamp is traveling at the log velocity and for causing the clamp to release the log after a cut has been effected, and apparatus for causing the reciprocating apparatus to accelerate the saw and the clamp in a downstream direction up to the log velocity for sawing the log, and then causing the reciprocating apparatus to index the saw means and the clamp means back in an upstream direction after the clamp has released the cut log. The method aspect of the invention includes the steps of feeding a log to be cut in an endwise, downstream path of travel, accelerating a log clamp and a saw along the path of log travel, clamping the log with the log clamp when the speed of the log, the log clamp and the saw are the same, displacing the saw into the log once the log is clamped to cut the log, retracting the saw once the cut has been completed, unclamping the now-cut log, and indexing the log clamp and the saw back in an upstream direction in preparation for the next cutting operation.</p> |
