Methods for forming earth boring tools having pockets for receiving cutting elements
AssigneeBaker Hughes Incorporated
InventorsJohn H. Stevens, Nicholas J. Lyons
Life of this patent
Estimating the term…
Abstract
Methods of forming cutting element pockets in earth-boring tools may include forming a first recess and a second recess. A filler material is disposed in the second recess to the form at least a portion of a back surface of the pocket. Methods of forming cutting element pockets in earth-boring tools may include orienting a rotating cutter generally parallel to a longitudinal axis of a cutting element pocket to be formed in a body of an earth-boring tool and machining the cutting element pocket in the earth-boring tool. Methods of forming earth-boring tools include forming a body comprising at least one blade and forming at least one cutting element pocket in the at least one blade.
Claims40
A method of forming a cutting element pocket in an earth-boring tool, the method comprising:
- forming a first recess including at least a portion of a lateral sidewall surface of a cutting element pocket in a blade of an earth-boring tool from a rotationally trailing surface;
- forming a second recess in the blade rotationally behind the first recess and exhibiting at least one discontinuity with the first recess;
- and
- filling at least a portion of at least the second recess with a filler material to a location of the discontinuity to form at least a portion of a back surface of the cutting element pocket.
A method of forming a cutting element pocket in an earth-boring tool, the method comprising:
- orienting a rotating cutter generally parallel to a longitudinal axis of a cutting element pocket to be foamed in a body of an earth-boring tool;
- machining the cutting element pocket in the body of the earth-boring tool beginning from a rotationally trailing region of the body relative to the cutting element pocket;
- and
- forming at least a portion of a back surface of the cutting element pocket with filler material.
A method of forming an earth-boring tool, comprising:
- forming a body comprising at least one blade;
- and
- forming at least one cutting element pocket in the at least one blade, comprising:
- forming a first recess including at least a portion of a lateral sidewall surface of the at least one cutting element pocket in the at least one blade;
- forming a second recess in the blade rotationally behind the first recess, at least a portion of the second recess being at least partially covered by an outer surface of the blade;
- and
- filling at least a portion of the second recess with a filler material to form at least a portion of a back surface of the at least one cutting element pocket with the filler material.
A method of forming a cutting element pocket in an earth-boring tool, the method comprising:
- forming a first recess in a blade of an earth-boring tool, the first recess including at least a portion of a lateral sidewall surface of a cutting element pocket;
- forming a second recess in the blade rotationally behind the first recess, at least a portion of the second recess being at least partially covered by an outer surface of the blade;
- and
- filling at least a portion of at least the second recess with a filler material to form at least a portion of a back surface of the cutting element pocket.
Dependencies are inferred from the claim text.