FIELD: drilling of soil or rock.
SUBSTANCE: invention relates to drilling equipment, in particular, to drill bit cutting structures. Drill bit includes housing with holes, in which there are hard-alloy inserts with shank and working head. Working head of each insert in a frontal plane is made in form of a truncated cone with a central recess. Truncated cone is formed with torus-shaped rings arranged at an angle to axis of shank and forming therebetween grooves for sludge removal, wherein tilt angle of torus-shaped rings coincides with direction of rotation of housing of drill bit.
EFFECT: technical result is higher efficiency of drill bit operation.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRILL BIT | 2016 |
|
RU2606890C1 |
| DRILLING BIT ROLLER CUTTER | 2010 |
|
RU2445434C1 |
| DRILLING BIT ROLLING CUTTER | 2011 |
|
RU2452840C1 |
| HARD-ALLOY INSERT | 2016 |
|
RU2620519C1 |
| DRILLING BIT | 2016 |
|
RU2615184C1 |
| DRILLING TOOLS | 2015 |
|
RU2576261C1 |
| DRILLING TOOLS | 2015 |
|
RU2581171C1 |
| HARD-ALLOY INSERT | 2016 |
|
RU2624744C1 |
| DRILL BIT | 2016 |
|
RU2604885C1 |
| ROCK-BREAKING TOOL | 2017 |
|
RU2635669C1 |
