Woodworking – Process – Including monitoring of operation
Patent
1985-12-20
1987-09-08
Bray, W. D.
Woodworking
Process
Including monitoring of operation
144 1R, 144 3R, 144378, 144379, B27B 100
Patent
active
046917519
ABSTRACT:
The present invention relates to a method for sawing a tree trunk and for treating a slice of wood of uniform thickness sawn off the trunk. In the first method, the trunk dimensions and shape as well as the biological quality of each section of the trunk both in the lengthwise and the crosswise direction are defined along with the sawing process, and this information is taken into account while treating the trunk. This method is characterized in that the production programme, which comprises various articles, i.e. product components, of different measures and qualities, is recorded (a) before the actual sawing process. The trunk is sawn into two halves in the middle (b), or the heart slice is removed therefrom (i). The longitudinal quality borders of each trunk half are defined on the basis of the sawn face and recorded (c), and further the shape and size of the trunk half are measured and recorded (d). The quality information and the measuring results are combined (e). The cross-cutting lines and the sawing patterns of the trunk halves are optimized on the basis of the measuring results and the quality information so that each trunk half is divided, in the lengthwise direction, into sections, each section in principle belonging to the same quality grade, and that into each section there are fitted suitable product components from the production programme and the value yield is maximized (f), whereafter the trunk halves are cross-cut and slices of desired sized are sawn off the halves, which slices are further sawn into suitable product components (g) and sorted out (l).
REFERENCES:
patent: 1487649 (1924-03-01), Foreman
patent: 3459246 (1969-08-01), Ottosson
patent: 3513321 (1970-05-01), Sherman
patent: 3736968 (1973-05-01), Mason
patent: 4093007 (1978-06-01), Hellstrom
Aihiko Ky
Bray W. D.
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