Obtaining a quality hole with a minimum number of burrs and without deviating from a given direction largely depends on the tool itself, but not only. Manual electric drills require special physical handling skills from the user that allow you to strictly center the tool and, if necessary, change its direction in accordance with the current task. To facilitate the vertical drilling process, a special device for a drill is designed, which rigidly fixes the device and changes its position only in a given range.
Fixture design
Externally, such devices are racks arranged in several parts with screws. The lower part serves as a support. This is a metal platform capable of stably holding the top structure and drill. Screws are provided in the support to fix the stand to the desktop. A cylindrical rod is mounted on the supporting platform - directly the rack, located perpendicular to the table. The top of the bar has a snap for fixing the movable bracket. Its clamping flanges allow you to securely fasten the tool. Also, the device for a drill for vertical drilling is equipped with a drive handle, due to which the support bracket is raised and lowered. And as an addition, such racks can be equipped with drilling depth limiters and a vise.
Variety Rack
To some extent, such devices can be considered as a bed. That is, the drill goes from the category of a hand tool to the shape of a machine. Accordingly, we can talk about connecting to the mains. For example, this type of magnetic tooling provides a holding force of the order of 25 kN. Such models are good in that, together with a guarantee of reliable fastening, they prevent the formation of backlash when the tool moves along the rails of the rack. A turning group for a drill, which even more resembles classic drilling machines, can be attributed to a separate group . In this case, a two-way grip is organized. The drill itself is fixed on one side and the workpiece on the other. In addition to drilling, a turning vice also allows grinding of the part. To do this, the nozzle initially mates with the workpiece, and in the process of torsion, the master can use the abrasive to adjust individual faces of the workpiece.
Key Features
There are two main parameters by which racks for a drill are selected - this is the diameter of the fixing flange and the working length along which the tool will be moved. The diameter determines the length of the drill, which can be clamped on the rack. The standard range is 45-65 mm, although there are specialized flanges and adapters that allow you to expand this corridor. Most often, mounting hardware is designed to work with a specific tool of a particular brand. The working length, in turn, determines the course along which the movement will be carried out. If the drill attachment has a wide range of movement, this will make it possible to drill large-format workpieces. In fact, this value denotes extreme levels of hole creation depth. The standard stroke varies from 20 to 30 cm. But again, there are professional racks that provide the ability to move along a length of 50 cm.
Manufacturers and prices
The most functional and reliable racks are supplied by Bosch, STAYER and Profi. Such equipment is characterized by high-quality construction materials, high operational parameters and the ability to work with a wide range of drill models. But the cost of such devices is rather big - on average, prices are 3-4 thousand rubles. In the assortments of the Russian manufacturers Enkor, Caliber and Prorab, one can find a more affordable fixture for a drill with a cost of 1-1.5 thousand. A decrease in the price tag hardly affects the operating parameters, but the quality of the metal and components will be lower.
How to make a vertical stand at home?
As components, it is recommended to use the components of old machines, welding equipment and building installation profiles. First of all, the functional part is made with runners along which the drill will move. For this, furniture fittings can also be used. Next, a platform is formed on which the device for vertical drilling with a drill will stand. With your own hands, this part can be made from a piece of pipe, on which the base with skids will stand. Rails can also be fixed on a wooden board, which is subsequently screwed to the pipe with special hardware or clamped with brackets.
It is advisable to attach the pipe itself to the assembly table forever, since the collapsible design will be unreliable. Fixation can be carried out by self-tapping screws or by welding on a thick metal plate. Instead of a guide lever, home-made drill accessories usually have an upward-projecting pusher handle that directly feeds the platform with a fixed drill.
Rack Operation
The tool is positioned so that the nozzle is directed downward perpendicular to the table. Such devices are not oriented towards oblique holes. Then the drill is connected to the network, and a workpiece is placed on the working platform. The part should be positioned so that the point with the future hole is exactly opposite the drill. Next, the tool is tuned to a suitable operating mode by adjusting the torque or speed. To prevent the drill attachment from transmitting unnecessary vibrations, it is advisable to ensure the maximum possible stability of the table on which the equipment is installed before starting work. During the drilling process, the operator must carefully guide the tool at the same pace to the previously designated point. The process can only be completed if the drill bit is removed from the workpiece.
Conclusion
As already mentioned, the addition of a drill with racks and other guides makes the machine a tool. In this sense, it should be borne in mind that a full-fledged bed is characterized by a reliable combination of the functional and the bearing part. A vertical drill attachment is completely controlled by the operator and does not in itself guarantee stability and accuracy of drilling. It only makes it possible to minimize the same vibrations and eliminate errors that are allowed during manual operation. Especially important is the control of makeshift racks, in the design of which it is difficult to exclude the formation of large backlashes and gaps that affect the accuracy of the drill feed.