Installation of diamond drilling with their hands

The people involved in the construction, there is often a need for drilling holes, the diameter of which is much greater than that of a conventional drill. Get through the sewage riser concrete monolith, cut a piece of the strip foundation, make the vent hole in reinforced concrete slab floors, drill a wall of bricks or foam - all this can be done by being available to existing installations diamond drilling.

Diamond drilling is also called core drilling. This method of creating holes allowing destroying material on a predetermined circle, and not over the whole area of ​​the aperture (such as occurs during punching or drilling time). Upon completion of drilling of the internal fragment of the drilled material is simply removed from the hole.

Currently on the market you can buy diamond drill setting a wide variety of formats. Nevertheless, there is always someone who is willing to invent something of their own, and at the same time to share experiences. For example, some plant collected user of our portal weldcut.

In its example and consider structural features of a self-made device. Schematically, the default setting for the diamond drill looks.

Where:

1. Bed with rails.
2. The power unit (powerful drill or electric motor).
3. Shank - shaft that transmits the rotation of the spindle at the diamond crown.
4. Diamond crown with the crown pipe.

bed

The frame is a kind of clamp with which the drilling unit is attached to the drilled surface. At the same time frame is a frame on which are mounted other components of the device. The design of the small hand-held units and frame may be missing altogether. Drilling in this case is carried out manually, which significantly increases the complexity of the work.

The need to use the frame is determined diameter drilled holes. For example, if the hole diameter of less than 40 mm, the drill can be used without the frame.

Elkinn (User FORUMHOUSE):

My soldiers are drilled vertical holes up to 50 mm without any stops. For this purpose, 2 kW machine. Simply hold hands. Initially used drilling jig. Proburivaya horizontal holes up to 40 mm, the mechanism is also holding hands. Holes are drilled to a depth of 300 mm. More is not necessary. Guys average body - not the Giants. Just the experience already several hundred holes each.

Universal design allows the frame to drill horizontal, vertical or even inclined holes in the walls, ceilings and floors. There are two methods that allow to firmly secure the bed plate to the drilled surface: using anchor bolt and by means of vacuum cups (second method requires a perfectly flat surface). Thus on the horizontal surface of the installation can be firmly fixed by its own weight.

weldcut (User FORUMHOUSE):

Here is a photo of drilling holes in the w / w wall septic tank (100mm). The device is not attached in any way at all, but just lying on the ground. I never bit.

Author welded construction Robust metal base frame, the main elements of which are made of pipes of rectangular section. On the sides of the frame are welded restrictive dies that do not allow the upper part of the plant to get off the tracks.

All this allows to fix installation with anchor bolts or do not use fixing parts (installation, vburivshayasya in the material is no longer a few centimeters, leaves from the set directions).

power unit

The serial settings as a power unit is most often used a powerful drill. Sometimes, instead of drills used electric or petrol engine (gasoline rarely used). Reducer built into the installation, provides the operating shaft rotational speed - from 100 to 2700 rev / min.

In homemade installation, the construction of which is shown in our website, used by the electric motor mixer. Its total capacity is 0.75 kW and the number of revolutions reaches the cutter 600 rev / min. Torque is transmitted to the shank by means of a belt transmission. A small engine power is compensated by the difference between the diameters of the drive pulley. This allows to drill holes in concrete walls and 100 mm in diameter and above. Installation, commercially available, have a much more powerful motor (1000 W and higher). However, their technical characteristics are quite comparable with the characteristics of a self-made installation.

Special attention deserves the shank body (thick-walled section of metal tubing), whose primary function is to provide a reliable support for the output shaft. That it is inserted into the support bearing for the shank. Bearings used alone. The other end is welded by welding the shank to the body of the crown. This design is fully justified, because the liners production plants also have one point of support, which is an electric cartridge.

weldcut (User FORUMHOUSE):

The front bearing is not only unnecessary, but also harmful, ie. A. Requires perfect osetsentrichnogo shaft that to install gathered at the knees, difficult to achieve.

Diamond crown with the pipe

Diamond crown - a key element of the drilling rig. High-alloy, complete with soldered diamond segments allow the hole drilled in the concrete of various diameter: 4 to 400 mm (in fact there are crown 1400 mm or more in diameter, but they are intended for industrial installations). Plants capable of drilled holes over 150 mm in diameter, in the home are used very rarely. The design, which is collected by our client, a diamond crown with a diameter of 112 mm.

The average length of the crown (coronal tube) ranges from 400 to 450 mm. In each case, the size is selected based on the thickness of the drilled structure.

crown cooling

In order to extend the life of the diamond crown, it must be cooled during operation. Work on the formation of holes can be made with the use of coolant and can be without it. In this regard, there are two method for drilling holes: "dry" and "wet".

Dry drilling is used for drilling of porous materials: foam concrete, brick, etc. In this case, the use coolant can only hurt. After fed with moisture building material loses its strength, which reduces battery life.

To use a special dry drilling bit (diamond segments welded by laser welding).

Such a method requires construction of a vacuum cleaner, which, after connection to the installation collects dust (produced in large quantities) and simultaneously cools the cutting tool air flow.

Wet drilling allows to drill a hard and non-porous monoliths of concrete, reinforced concrete gustoarmirovanny etc... Wet drilling crowns used with soldered cutting segments. If the soldering temperature reaches the critical value (approximately 600 ° C), diamond bit fails. In order to cool the cutting segments on the diamond crown continuously supplied with water.

The design of serial plants following scheme is used coolant.

Where:

1. Diamond crown.
2. The body wall (ceiling).
3. Pipe diamond bit.
4. Adapter for connecting the bit shank.
5. A tube for supplying cooling (washing) liquid.

User weldcut implemented crown washing and cooling system as follows.

The axial bore of the drive pulley is mounted copper pipe through which water flows by gravity into the inner cavity of the diamond crown. Water tank (vulgaris canister) is mounted on an elevation.

At high rotational speed of the working shaft it is very important to avoid interruption of water supply. This can lead to rapid overheating solders.

Elkinn (User FORUMHOUSE):

Due to lack of wetting fly crown - just keep ...

safety devices

During the installation may be exposed to large mechanical stresses (for example, if allowed a strong crown skew) while drilling hard materials. In order to avoid unpleasant consequences, serial installation of safety clutch.

Home-made apparatus shown in our website is protected against overloads conventional drive belt, which in biting bits simply slips on pulleys.

drilling technology

To drill took place without complications, and the result is the correct form holes, the drilling rig is initially necessary to set the correct direction.

The first thing the device must be correctly set with respect to the drilled structure. Ensure installation position can be required, using common building level. Correctly exposed crown readily enters into the surface of the building structure, and that the tool from the first Zabur at a given point, it is necessary to use a jig.

Such a device can be bought, but you can make with your own hands.

Glass diamond bit, in this case, just embedded in the fixed metal frame. Once crown enters the concrete frame is removed, and drilling continues in a predetermined direction.

Remove the crown of holes is possible only with the engine off!

The recommended use moisture-proof gloves, earplugs, headphones and protective knee pads (you may need for a vertical drilling ceilings) as a means of individual protection.

If the settings diamond drill you know firsthand, if you have experience of self-production of such devicesWe invite you to share practical tips with other users FORUMHOUSE. Certainly, many handyman will be interesting article about features professional toolsWhich should be in the arsenal of every owner. A short video clip about Working with a hand drill It teaches you how to choose the tool that suits your needs and objectives.

Discuss the article and read other materials devoted to country life you can on the websiteFORUMHOUSE.

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