COMPUTER-ANWENDUNGENUND INFORMATIONS-
TECHNOLOGIE
Optimisation of cutting squared timber
The task:
Squared timber is produced in sawmills for the secondary wood industry. Crude squared timber up to a length of 4 m is to be classified on the basis of given quality specifications for the side surfaces of the squared timer and on the basis of parts lists of products to be manufactured. This classification is to be optimal as regards profitability. To date, the raw material classification has been by hand due to the very complex quality requirements.
The solution:
The raw material is photographed by 4 cameras which scan the four side surfaces of the squared timber. With image processing methods, the position and dimensions of the imperfections in the wood (knobs, rotten parts etc.) are determined. To optimise this method, a multi-stage algorithm was developed: first of all, the imperfections are examined in line with the quality regulations, thus determining for each product those positions in the raw material to be sawn out of the squared timber. Then, by means of a dynamic optimisation algorithm, the optimal division of the material is determined. In line with the optimal solution, the timber is transported to the cutting plant and then the sorting plant. As a result of this method, the optimisation procedure has been considerably shortened so that productivity is clearly increased by reducing the processing times, at the same time guaranteeing product quality.
Phone: 040 / 51 437 - 0
Fax: 040 / 51 437 - 130
e-mail: Vertrieb@caitec.de