Method of manufacturing a rotary drill bit
View Patent ↗A rotary drag bit for drilling a subterranean formation includes a plurality of support elements affixed to the bit body, each forming at least a portion of a cutting element pocket. Each of a plurality of cutting elements has a substantially cylindrical body and is at least partially disposed within a cutter pocket. At least a portion of the substantially cylindrical body of each cutting element is directly secured to at least a portion of a substantially arcuate surface of the bit body. At least a portion of a substantially planar surface of each cutting element matingly engages at least a portion of a substantially planar surface of a support element.
1. A method of manufacturing a rotary drill bit, comprising:
providing a body having a centerline and including a leading end having a formation-engaging surface for contacting a formation during drilling;
forming at least one cutting element pocket, wherein the forming the at least one cutting element pocket comprises:
forming at least one recess comprising a substantially arcuate surface in the formation-engaging surface of the body; and
affixing at least one support element comprising a support surface to the body and positioning the support surface relative to the substantially arcuate surface of the at least one recess in the formation-engaging surface of the body to form the at least one cutting element pocket;
disposing a cutting element within the at least one cutting element pocket, the cutting element having a cutting face, a surface distal to the cutting face, and at least one lateral side surface therebetween;
abutting the surface of the cutting element distal to the cutting face thereof against the support surface of the at least one support element; and
affixing at least a portion of the at least one lateral side surface of the cutting element directly to the substantially arcuate surface of the at least one recess formed in the formation-engaging surface of the body.
2. The method of claim 1 , further comprising affixing at least a portion of the surface of the cutting element distal to the cutting face thereof directly to the support surface of the at least one support element.
3. The method of claim 1 , wherein the affixing at least one support element to the body comprises at least partially securing the at least one support element to the body using an anchor element.
4. The method of claim 1 , wherein the affixing at least one support element to the body comprises at least one of welding, brazing, press-fitting, and shrink-fitting.
5. The method of claim 1 , wherein the affixing at least one support element to the body comprises:
forming a retention recess in the formation-engaging surface of the body that at least partially intersects the substantially arcuate surface of the retention recess in the formation-engaging surface of the body; and
inserting at least a portion of the at least one support element into the retention recess.