Drill bit manufacturing method

Details Drill bit manufacturing method Drill bit manufacturing method

B - Operations, Transporting

23

P

76/21

B23P 15/28 (2006.01) E21B 10/56 (2006.01) E21B 10/62 (2006.01)

Patent

CA 1264238

Abstract of the Disclosure The invention comprises a method of mounting a cutter, having a stud portion defining one end thereof and a cutting formation generally adjacent the other end, in a pocket in a drill bit body member. The method includes the steps of forming a channel extending into the pocket, inserting brazing material into the channel, inserting the stud portion of the cutter assembly into the pocket, then heating the bit body member to cause the brazing material to flow through the channel into the pocket, and finally re-cooling the bit body member. During the assembly of the various pieces required in the steps mentioned immediately above, a spring is used, cooperative between the cutter and the bit body member, to retain the stud portion in the pocket and also to displace the stud portion toward the trailing side of the pocket.

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