Method and grinding appliance for grinding

Details Method and grinding appliance for grinding Method and grinding appliance for grinding

B - Operations, Transporting

24

B

B24B 3/33 (2006.01)

Patent

CA 2701017

This invention relates to a grinding appliance for grinding of button drill bits which comprise a drilling head with a plurality of buttons, and a method for manufacturing such a grinding appliance. The grinding appliance comprises a first element provided with an abrasive facing comprising diamonds as the abrasive medium and adapted to grinding a button to an intended end profile shape, and a second element adapted to grinding the drilling head. At least one section of the second element is provided with an abrasive facing comprising diamonds as the abrasive medium, the average grain size for the diamonds in the second abrasive facing being of a different average grain size from those in the first abrasive facing.

Cette invention porte sur un appareil de meulage pour meuler des trépans à pastille de carbure de tungstène qui comprennent une tête de perçage comportant une pluralité de pastilles de carbure de tungstène, et sur un procédé pour fabriquer un tel appareil de meulage. L'appareil de meulage comprend un premier élément comportant un revêtement abrasif comprenant des diamants comme milieu abrasif et apte à meuler une pastille de carbure de tungstène en une forme à profilé d'extrémité souhaitée et un second élément apte à meuler la tête de perçage. Au moins une section du second élément comporte un revêtement abrasif comprenant des diamants comme milieu abrasif, la taille de grain moyenne des diamants dans le second revêtement abrasif étant différente de la taille de grain moyenne des diamants dans le premier revêtement abrasif.

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