Cutting piece and cutting arm for a debarking machine of a...

B - Operations – Transporting – 27 – L

Patent

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Details

B27L 1/08 (2006.01) B27L 1/05 (2006.01)

Patent

CA 2225459

A replaceable cutting piece and a cutting arm for a debarking cutter for a debarking machine of a hollow-rotor type, which cutting piece (6) and cutting arm (4) comprise supporting surfaces and abutment surfaces for receiving loads acting on the cutting piece fastened by a retaining screw to a housing (7) formed in the cutting arm. In order to direct the loads acting on the cutting piece in full to the cutting arm instead of to the retaining screw, the cutting piece and the cutting arm comprise supporting surfaces and abutment surfaces (9a to 9d, 11a, 11b, 12a, 14a, 14b) for receiving the loads acting on the cutting piece in the direction of the axle, the radius and the tangent of the rotor and the torque caused by said loads, which surfaces are situated in perpendicular planes with respect to one another.

La présente invention concerne une plaquette de coupe remplaçable et un bras de coupe destinés à un couteau écorceur pour machine à écorcer du type à rotor creux. La plaquette de coupe (6) et le bras de coupe (4) comprennent des surfaces d'appui et des surfaces de butée destinées à recevoir des charges agissant sur la plaquette de coupe, qui est fixée par une vis à un logement (7) formé dans le bras de coupe. Afin de diriger entièrement les charges appliquées à la plaquette de coupe vers le bras de coupe au lieu de la vis de fixation, la plaquette et le bras de coupe comprennent des surfaces d'appui et des surfaces de butée (9a à 9d, 11a, 11b, 12a, 14a, 14b) pour recevoir les charges qui agissent sur la plaquette de coupe dans la direction de l'axe, du rayon et de la tangente du rotor, ainsi que le couple produit par ces charges. Ces surfaces se trouvent dans des plans perpendiculaires les uns aux autres.

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