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Effect of grain direction on cutting forces and chip geometry during green beech wood machining

Article dans une revue avec comité de lecture
Author
CURTI, Rémi
MARCON, Bertrand
DENAUD, Louis
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
ccCOLLET, Robert

URI
http://hdl.handle.net/10985/13214
Date
2018
Journal
Bioresources

Abstract

Proper valorization of the sawing wastes in industrial sawmills is a permanent issue with strong economic and environmental stakes. Most industrial sawmills are equipped with chipper-canter heads reducing the outer part of the logs into chips used in the pulp and paper industry. Optimization in canter use would increase the acceptable proportion of exploitable chips for this industry. With chipper-canters, the cutting direction varies along the cut. This study investigates the impact of the angle formed between the cutting direction and the grain direction on the required cutting force and the chips’ geometry. Orthogonal cutting is conducted to simulate the chipper-canter machining operation on green beech. To lower the cutting forces when machining, aiming for a cutting direction as parallel as possible to the wood fiber is necessary. However, if this angle is too low, the chips’ generated geometries prevent them from a proper valorization of this resource. A compromise with grain direction between 50° to 70° both limits the cutting forces and improves the steadiness of the chip fragmentation.

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