Tools with abrasive segments

Details Tools with abrasive segments Tools with abrasive segments

B - Operations, Transporting

24

D

B24D 7/06 (2006.01) B24B 7/22 (2006.01) B24D 18/00 (2006.01)

Patent

CA 2312927

A tool (10) including abrasive segments (14), which can be superabrasive segment, mounted to a mounting plate (20) and a method for making the same. The abrasive segments (14) include hard particles and are formed by sintering layers of hard particles with layers of bond material to form a laminated sheet. The abrasive segments (14) are then cut from the laminated sheet and mounted to a planar face (9) of the mounting plate (20) to form a portion of a working region of the tool (10). Each segment (14) has a grinding surface which can be formed perpendicular to the layers of bond material and layers of hard particles so that the concentration of hard particles at the grinding surface is relatively high. This allows the portion of working surface made up of the abrasive segments to be relatively small. The segments can also be mounted to the substrate disc (20) such that the grinding surface of each segment is at an angle to the planar face (9).

Outil (10) comportant des segments abrasifs (14), qui peuvent être des segments superabrasifs, fixés sur une plaque de fixation (20), et procédé permettant de fabriquer ledit outil. Pour former les segments abrasifs (14), qui contiennent des particules dures, on fritte des couches de particules dures avec des couches de matériau de liaison, de façon à former une feuille stratifiée, puis on découpe les segments abrasifs dans la feuille stratifiée et on les fixe sur une face plane (9) de la plaque de fixation (20), de façon à former une partie de la zone de travail de l'outil (10). Chaque segment (14) présente une surface de meulage qui peut être perpendiculaire aux couches de matériau de liaison et aux couches de particules dures, de façon que la concentration de ces dernières au niveau de la surface de meulage soit relativement élevée. La surface de travail constituée des segments abrasifs peut ainsi être relativement petite. Les segments peuvent également être fixés sur le disque substrat (20) de façon que la surface de meulage de chaque segment forme un angle par rapport à la face plane (9).

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