Patent ID: 8276805
Filing Date: 2012-10-02
Classification: B23K

Abstract:
1. A method of brazing cutter teeth, the method comprising: providing a bit body having a longitudinal axis along a length of the bit body; pressing at least one cutter against the bit body with an external spring device having a frame, external to the at least one cutter and positioned radially outward of the bit body, and at least one spring positioned radially between the frame and the at least one cutter, wherein the spring has a longitudinal axis along a length of the coil, and the longitudinal axis of the spring is non-parallel to the longitudinal axis of the bit body, wherein a quantity of filler metal is held between each of the at least one cutters and the bit body; placing the bit body and the at least one cutter in an inert gas filled chamber with about 10% H heating the chamber to a temperature above the melting point of the filler metal thereby melting the filler metal.