FIELD: mining.
SUBSTANCE: ice-drill contains crossbar whereon flat knives are secured; each of knives has additional, side and front facets; two latter are arranged at acute angle to base of knife and form cutting edges on base; facets of knives are made curvilinear in such way, that curvilinear two-facets angle is formed at intersection of front and side facets and it is directed forward with its top; circumference figured from center of drill rotation through base of rib, where front and additional facets cross, forms curvilinear angle 1°-3° with base outline of additional facet; also surface of additional facet is perpendicular to base of knife.
EFFECT: minimising power losses at drilling borehole.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CUTTING HEAD FOR ICE AUGER DRILL | 0 |
|
SU1179049A1 |
| ASYMMETRIC CUTTER FOR A DRILLING TOOL | 2017 |
|
RU2670306C1 |
| ICE-DRILLING DEVICE | 0 |
|
SU1064088A1 |
| CUTTING BLADE FOR ICE BORER | 2009 |
|
RU2416059C2 |
| CUTTING KNIFE FOR ICE DRILL | 2014 |
|
RU2561750C1 |
| CUTTER FOR MINING MACHINERY | 1994 |
|
RU2071562C1 |
| BIT FOR DIRECTED MECHANICAL ICE DRILLING | 2012 |
|
RU2504637C1 |
| CUTTING HEAD FOR AUGER ICE DRILL | 0 |
|
SU1617273A1 |
| ICE BORE | 2014 |
|
RU2561749C1 |
| CUTTING HEAD OF ICE DRILL | 2014 |
|
RU2561751C1 |
