FIELD: mining.
SUBSTANCE: rock-destructing insertion includes shank, working head with reaming lug, protruding in plane of shank outer diameter, and sleeve forming reaming lug by its side surface. Sleeve is rigidly attached to upper part of working head designed stepped. As per the first version of design, upper step of working head is located off-centred relative to shank, and as per the second version, sleeve is designed with off-centred channel.
EFFECT: improving insertion operating efficiency.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| BORING ROCK DESTRUCTION TOOL | 2008 |
|
RU2384689C1 |
| HARD-ALLOY INSERT | 2016 |
|
RU2624744C1 |
| CROWN BIT | 2005 |
|
RU2298077C1 |
| DRILLING BIT ROLLING CUTTER | 2011 |
|
RU2452840C1 |
| DRILLING TOOLS | 2015 |
|
RU2581171C1 |
| DRILLING BIT ROLLER CUTTER | 2010 |
|
RU2445434C1 |
| BLADED CALIBRATOR | 2010 |
|
RU2436928C1 |
| DRILL BIT AND METHOD OF SECURING OF ITS INSERTS | 2014 |
|
RU2566151C1 |
| ROCK CUTTING TOOL | 2005 |
|
RU2279524C1 |
| ROCK-BREAKING TOOL | 0 |
|
SU1495427A1 |
