FIELD: manufacturing technology.
SUBSTANCE: group of inventions refers to the anchor hole formation and can be used to expand the diameter. Drill for expanding the diameter is inserted and rotated in a portion of the prepared hole drilled in the concrete fixing body. Cutting blade portion of the drill for expanding the diameter is moved radially by centrifugal force to ream the portion of the prepared hole to form a diameter expansion portion. Minimum value of the centrifugal force applied for reaming the expansion area of the diameter is 0.75 N. Device for expanding the diameter comprises a drill and an electric drill, through which the drill is driven to rotate. Drill is configured to move the cutting blade portions under the action of a centrifugal force by expanding them radially outwardly with respect to the blade retaining portion.
EFFECT: provides an opening for the anchor.
7 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRILL FOR EXPANSION OF DIAMETER | 2014 |
|
RU2588913C2 |
| DRILLING BIT FOR DIAMETER EXPANSION | 2015 |
|
RU2635703C1 |
| IMPLANT SURGICAL DRILL | 2010 |
|
RU2515400C2 |
| MULTIFUNCTION AXIAL TOOL | 2008 |
|
RU2364478C1 |
| SPIRAL BLADE BIT, CONTAINING THIS BIT SYSTEM FOR ROCK CASING, METHOD FOR CUTTING SPIRAL GROOVE IN INTERNAL SURFACE OF GUIDE BOREHOLE AND METHOD OF GUIDE BOREHOLE REAMING BY MEANS OF SAID BIT, SYSTEM FOR CASING ROCK WITH ANCHOR BOLT | 2004 |
|
RU2362879C2 |
| STEM RETAINER | 2007 |
|
RU2404882C2 |
| METHOD OF MULTIPLE-PASS WORKING OF HOLES | 0 |
|
SU1511006A1 |
| DRILL (VERSIONS) | 2003 |
|
RU2292255C2 |
| EJECTION DRILLING SYSTEM | 2008 |
|
RU2559601C2 |
| COMBINED AXIAL TOOL | 2010 |
|
RU2418656C1 |
