Wide-tooth cone composite drill bit
A composite drill bit and roller cone technology, which is used in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of shortening the service life of the drill bit, restricting the overall service life of the drill bit, and short working life of the bearing, so as to reduce the discontinuity. sexual effect
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[0084] The following non-limiting examples illustrate the invention.
[0085] Such as Figure 1 to Figure 32 As shown, the basic example is: comprising a drill body 1, a fixed cutting structure 4 and at least one cone 2, the cone 2 and the fixed cutting structure 4 are arranged on the drill body 1, and the fixed cutting structure 4 is provided with fixed cutting teeth 41, The roller cone forms a rotational connection with the bit body 1 through a bearing structure. The roller cone 2 is inlaid with a horizontal inlay tooth 3, and the value range of the deflection angle α of the tooth top of the horizontal inlay tooth 3 is 70°≤|α|≤90°, The cross-sectional profile of the fixing portion 31 of the transversely mounted tooth 3 is non-circular. Preferably, the transversely mounted teeth 3 may be cemented carbide teeth, diamond reinforced cemented carbide teeth, diamond impregnated teeth, and the like.
[0086] Each horizontal inlaid tooth of the present invention can realize its fu...
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