Cutting edge rounding method

B - Operations – Transporting – 24 – B

Patent

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Details

B24B 3/00 (2006.01) B24B 3/34 (2006.01) B24D 13/10 (2006.01)

Patent

CA 2298528

A method of treating a cutting edge of a tool to reduce deterioration of the cutting edge during a subsequent machining operation. A brush having a plurality of bristles is rotated about an axis of rotation and positioned relative to the cutting edge whereby the brush axis is oriented perpendicular to the cutting edge or at an angle of up to about plus/minus 20 degrees with respect to the perpendicular orientation. The brush is then brought into contact with the cutting tool in the presence of an abrasive material. Preferably the cutting tool is a cutting blade for cutting touthed articles such as gears and the like wherein the cutting edge is formed by the intersection of a front face and a cutting side profile surface of the cutting blade. The rotating brush effectively polishes a portion of the front face and cutting side profile surface which is adjacent to the cutting edge while producing the rouding-off of the cutting edge.

L'invention concerne un procédé de traitement du tranchant d'un outil pour réduire la détérioration du tranchant pendant une opération d'usinage postérieure. On tourne une brosse comportant plusieurs poils autour d'un axe de rotation et on la dispose par rapport au tranchant, de manière que l'axe de la brosse soit perpendiculaire au tranchant ou soit disposé dans un angle égal à plus/moins 20 degrés par rapport à la direction perpendiculaire. On met alors la brosse en contact avec l'outil de coupe en présence d'une matière abrasive. De préférence, l'outil de coupe est une lame de coupe destinée à couper des articles dentés tels que des engrenages et autres articles similaires, le tranchant étant formé par l'intersection d'une face frontale et d'une surface de profil de bord tranchant de la lame de coupe. La brosse rotative polit de manière effective une partie de la face frontale et de la surface de profil du bord tranchant contiguë au tranchant tout en effectuant l'arrondissage du tranchant.

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