FIELD: mining industry. SUBSTANCE: drill bit has rest in the form frontal blade 11 attached to walls of slot between blades 6 with pads 9. Pads 9 are located between front 7 and rear 8 edges perpendicular to longitudinal axis of drill bit with lower position of blades 6. Front 7 and rear 8 edges are arranged in axial plane of drill bit. Rock breaking edge of blade 11 is located above pads 9. EFFECT: improved efficiency of drilling when conducting geological prospecting. 2 dwg
Title | Year | Author | Number |
---|---|---|---|
ROLLING DRILLING BIT | 2012 |
|
RU2623372C2 |
CHURN-DRILLING TOOL | 0 |
|
SU1121390A1 |
ROCK CUTTING ELEMENTS OF CUTTING AND CUTTING-CHIPPING TYPE | 2019 |
|
RU2723779C1 |
TOOL FOR CHURN BOREHOLE-DRILLING | 0 |
|
SU791900A1 |
DRILLING DEVICE | 1990 |
|
RU2026482C1 |
MACHINE FOR PERCUSSION DRILLING OF HOLES | 0 |
|
SU1821553A1 |
CONE BIT | 2019 |
|
RU2726724C1 |
DEFLECTOR | 0 |
|
SU981557A1 |
DEVICE FOR DRILLING WELLS OF LARGE DIAMETER | 1992 |
|
RU2072047C1 |
ROCK CUTTING TOOL FOR VIBRATORY ROTARY DRILLING | 1992 |
|
RU2053346C1 |
Authors
Dates
1994-01-30—Published
1991-12-02—Filed