Feed speed and guide arm control for sawing logs with band saws

Details Feed speed and guide arm control for sawing logs with band saws Feed speed and guide arm control for sawing logs with band saws

B - Operations, Transporting

27

B

143/12

B27B 27/02 (2006.01) B23D 55/04 (2006.01) B23D 55/08 (2006.01) B23D 59/00 (2006.01) B27B 1/00 (2006.01) B27B 31/06 (2006.01)

Patent

CA 2019038

ABSTRACT A feed speed control for band saws avoids overfeeding and underfeeding of logs or cants to allow higher initial input feeds and takes into account varying cutting depth throughout a log or cant length. The method comprises the steps of positioning a log or cant in preparation for sawing in a saw line, projecting a first light line onto the surface of the log or cant at the projected saw entry line, and a second light line onto the surface of the log or cant at the projected saw exit line and the second light line to determine depth of cut, and controlling the feed speed of the log or cant during the sawing step past the saw blade, to a predetermined feed speed for the measured depth of cut to avoid overfeeding and underfeeding.

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