Method for orienting a log
AssigneeA. Ahlstrom Osakeyhtio
InventorJorma A. K. Tuomaala
Life of this patent
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Abstract
A method for orienting a log, supported by rotating means, which is to be fed into a saw or a similar device. The upper edge line of the log profile is surveyed by two cameras placed in such a symmetrical position above the log that a line from the camera to the log in the feed plane forms an olbique angle with the feed plane. Each camera records the edge line viewed by it and the log is brought by orienting movements in such a position that the images of the edge lines as viewed by the cameras are substantially mirror images of each other.
Claims6
A method for orienting a log to be fed into a saw or a similar device, said log being supported by rotating means in a sawing line, comprising the steps of:
- (a) placing cameras above the log such that they are symmetrical with respect to the log and that a line from each camera to the log in a feed plane which passes through the sawing line and is parallel to the blades of said device forms an oblique angle with said feed plane;
- (b) recording with each camera the upper edge line of the log profile viewed by it;
- (c) moving the log into such a position that the edge lines as used by the cameras are substantially mirror images of each other.
Dependencies are inferred from the claim text.