Method for improving wear resistance of abrasive tools

Details Method for improving wear resistance of abrasive tools Method for improving wear resistance of abrasive tools

B - Operations, Transporting

23

B

B23B 51/04 (2006.01) B23B 31/00 (2006.01) B28D 1/04 (2006.01)

Patent

CA 2291279

A drill bit (10) is provided with a cylindrical body portion (24) fabricated from a plastic material. The body portion is fastened in concentric, end to end relation to a cylindrical cutter (12) fabricated from a metallic material and having an array of cutting elements (16) disposed thereon. The body portion and cutter are preferably tubular, wherein the cutting elements are disposed in an annular array, to facilitate core or crown drilling operations.

Un outil de perçage (10) est doté d'une partie corps cylindrique (24) fabriquée à partir d'une matière plastique. La partie corps est fixée bout à bout et de manière concentrique à une fraise cylindrique (12) en matériau métallique sur laquelle un groupe d'éléments coupants (16) est placé. La partie corps et la fraise sont de préférence tubulaires, les éléments coupants étant placés selon une configuration annulaire, de sorte que les opérations de perçage-alésage et de carottage soient facilitées.

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