FIELD: mining.
SUBSTANCE: rock-breaking tool has a body with holes in which there are inserts with conical shanks and a working head fixed by means of intermediate bushings. The shanks and intermediate bushings are provided with mating conical surfaces. The inner diameter of intermediate bushings decreases from shanks of inserts to their working head. Longitudinal through grooves are made on conical surface of intermediate bushings on the side facing shank direction having a conical shape in the frontal plane. The length of longitudinal through grooves is less than length of intermediate bushings.
EFFECT: increased tool efficiency.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ROCK-BREAKING TOOL | 2017 |
|
RU2635669C1 |
| ROCK-BREAKING TOOL | 2017 |
|
RU2635672C1 |
| DRILLING TOOLS | 2015 |
|
RU2576261C1 |
| DRILLING TOOLS | 2015 |
|
RU2581171C1 |
| DRILL BIT AND METHOD OF SECURING OF ITS INSERTS | 2014 |
|
RU2566151C1 |
| HARD-ALLOY INSERT | 2016 |
|
RU2624744C1 |
| DRILL TOOL | 2013 |
|
RU2536598C1 |
| DRILLING TOOL | 2013 |
|
RU2530034C1 |
| HARD-ALLOY INSERT | 2016 |
|
RU2620519C1 |
| ROLLER BIT (VERSIONS) | 2014 |
|
RU2567560C1 |
