Concrete drilling: a selection of tools for the job

In the process of building construction, as well as during their current and capital repairs, drilling of concrete is very often necessary for laying any communications - these can be systems:

• heating,
• plumbing,
• sewage,
• ventilation,
• power supply,
• connections,
• observations,
• fire safety and so on.

Moreover, a similar method is used not only for concrete - the same tools make holes in limestone, clinker and masonry - in all mineral building materials from which foundations, floors, walls and ceilings are made. Below we will talk more about the tools needed for such drilling, the process itself, and also look at the video in this article on our topic as a supplement.

Hole drilling

Note. We are now talking specifically about the ring or core drilling holes, which use diamond or pobeditovy mills. Small passages, up to an inch diameter, can be made in concrete using a perforated drill using a perforator in impact mode.

Instruments

• In cases where precision and accuracy are needed, diamond drilling of holes in concrete is performed, where there is also the possibility of continuous removal (assembly) of water and sludge (using special equipment). Stiffeners allow you to attach any direction to the crown mill; therefore, you can drill at an angle that is necessary in a particular case.
• For drilling holes to a greater depth, the shank of the crown cutter is extended by increasing the rods, so the thickness of the wall or foundation does not impede quality penetration. In those situations when it is necessary to make a hole of a large diameter, beds with two laths are used (such devices are usually made of light aluminum alloys, which allow them to be easily transported, assembled and disassembled by hand).

• The fixing of the bed can be done in two ways - suction cups (vacuum) and anchors, as in the upper figure, but there are also universal options, where the possibility of fixing by any of these methods. Of course, the anchor method can be called the most reliable, since with such a fastener the fixed frame is able to withstand maximum loads.

• For the passage of holes in mineral structures, the instruction allows the use of both pobedit and diamond core cutters (their price is higher), but the tool by which they are used differs significantly in the principle of operation.. Pobeditovy a mill is used by means of the puncher, occasionally - electric drills, but the essence is that drilling with pobeditovy segments occurs in combination with blow and for this purpose on a drill and the puncher there is a special operating mode.
• But the installation for drilling concrete with diamond crowns is designed only for rotation - diamond dusting on the segments of the crown simply grinds the processed material in the form of concrete, brick and stone. This allows you to make even holes where the edge is almost not destroyed - for mounting communications it is very convenient.

Work process

Note. First of all, a tool for drilling concrete is selected - it is necessary that it is suitable for power, in case of a large plate thickness, the corresponding crown is selected or the shank is extended with a rod (not to mention the choice of a suitable cutter diameter). For example, we will consider vertical drilling of a slab of concrete.

Before installing the tool to its original position, depending on its brand and manufacturer, it is necessary to mark the center for the hole under the anchor for the subsequent installation of the bed (learn here how to make molds for concrete rings).

После центровочной разметки просверливаете отверстие на 16 мм диаметром для анкера М12/16×50 мм, задействуя для этой цели перфоратор с победитовым сверлом. После всего из сделанного отверстия нужно в обязательном порядке удалить пыль.

Now you insert a wedge-shaped anchor flush with the surface into the formed seat and wedge it with several blows of a hammer, sufficient for reliable displacement of the core. When you make sure that the wedging is carried out reliably, screw in a regular anchor bolt there, which will serve as the main fixture for the drilling unit.

The fixing of the bed on the anchor bolt is made by tightening the nut, after which, in accordance with the instructions, an electric motor is installed there and a diamond diamond cutter is wound onto the gearbox spindle.

The water supply from the stationary water supply system is connected to the drilling installation (to the cooling system). After all, the switch sets the appropriate mode of operation and you can start drilling.

Additional features. Inclined drilling is also possible, but in this case, due to the inclination of the hinge connecting the frame to the batten, the taper cutter may not reach the treated plane. Therefore, in such situations from the very beginning they wind the extension barbell.

Conclusion

Как вы понимаете, качественная резка железобетона алмазными кругами и его сверление производится на специальном оборудовании, от которого и зависит скорость и качество (чёткость) проделываемых отверстий. Если такие отверстия необходимы в небольшом количестве, то лучше для этого заказывать специалистов с качественными устройствами для бурения (см.также статью «Блоки из ячеистого бетона и их особенности»).