METHOD OF ASSEMBLING AND CUTTING OF DRILLING CONE ROCK BIT Russian patent published in 2008 - IPC E21B10/00 

FIELD: mechanic, drilling technique.

SUBSTANCE: invention refers to the sphere of drilling technique and can be used in drilling bit, made for drilling of deep oil and gas well and wells for pit-run of explosion drilling. It allows to minimize the meaning of top and radial beat. Before assembling it is provided the guaranteed gap of double hosohedron foot, after it made the base assembling holes on the tops with the axis, situated in planes, passing through the axis of double hosohedron under similar angels from the cover side, with similar sizes from their bottom up the point of crossing axis of operating pin with axis of running race. After it is movingly fixed the conical cutter on the foots, fixed the locking hooks, the sections are installed, to the base holes to the corresponding to the sizes and forms, the base pin devices for assembling, and with the help of clutch pins and pushers of the sections, it is rotated around its axis of base pins the sections up to the contact of opposite contours of cone of the conical cutter with inside surface of installed on the hard pistons of ring gage, after the sections are welded. On the back of the foot it is done symmetrical base holes with similar distance from the base to the axis of the device of the assembling, it is taken away the bit body from the assembling device and it is installed the device for with base cog, corresponding to the form and size of base holes in foots, hard fixed the hull by them, and then it is made the cutting on the nipple of added conic throat.

EFFECT: minimization of meaning of the top and radial beats by optimizing the assembling of drilling bit.

14 dwg