Sharpening a knife blade

B - Operations – Transporting – 24 – B

Patent

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Details

B24B 1/00 (2006.01) B24B 3/54 (2006.01) B24B 27/00 (2006.01) B24B 41/06 (2006.01)

Patent

CA 2317807

A method and apparatus (10) for grinding a knife blade (66) to form a sharpened edge. The blade (66) is held in a fixture (56) including a self-centering clamp (57) with a pair of jaws (96, 98) gripping the knife blade (66) by engaging opposite sides (76, 78) of a part of the blade (66) tapered toward an edge location, and holding the blade (66) so that the intended edge location of the blade is in a desired location with respect to the fixture (56). This permits use of profiled grinding wheels (32, 34) of hard material mounted on a carriage under computer control to grind an edge bevel accurately on each side of the blade, forming a sharp edge.

La présente invention concerne un procédé et un dispositif (10) d'affûtage de lame de couteau (66) destiné à réaliser un fil aiguisé. La lame (66) est maintenue dans un support fixe (56) incluant une pince à centrage automatique (57). Les deux mâchoires (96, 98) de la pince tiennent la lame de couteau (66) par un contact des côtés opposé (76, 78) d'une partie de la lame (66) s'effilant jusqu'au tranchant. La tenue de la lame (56) est réalisée de sorte que la position voulue du tranchant de la lame se trouve dans la position voulue par rapport au support fixe (56). On a ainsi la possibilité d'utiliser des meules profilées (32, 34) en métal dur montées sur un chariot commandé par ordinateur pour affûter avec précision le biseau de tranchant de chaque côté de la lame, formant ainsi un tranchant aiguisé.

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