FIELD: mining engineering.
SUBSTANCE: drill bit comprises a hollow body with flushing channels and a stepped slot, a hard-alloy plate with a mandrel provided with a recess on the upper side surface located therein and a stopper rigidly connected to the body with a bushing for mandrel. The mandrel is made with an inclined end and a protrusion on the lateral surface, the body is provided with a responsive slots for mandrel protrusion, and the stopper is in the form of a stepped rod with an inclined end located in the collar and spring-biased in the axial direction, which interacts with the inclined end of the mandrel.
EFFECT: simplification of drilling bit installation technology.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663520C1 |
| FLUSHING ASSEMBLY OF DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663516C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2658959C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2658960C1 |
| FLUSHING ASSEMBLY OF DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663511C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2658961C1 |
| WASHOVER UNITY OF DRILLING BIT (VERSIONS) | 2007 |
|
RU2346132C1 |
| WASHOVER UNIT OF DRILLING BIT | 2007 |
|
RU2346131C1 |
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2617745C1 |
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2618726C1 |
