Electric drill - a necessary tool of the master
An electric drill is an electrically powered multifunctional tool that produces work by rotating and reciprocating motion. However, versatility is not always a convenient property for a tool. Therefore, each series from the line of drills is designed for a specific nature of work, but they are all associated with the use of the rotational movement of the working body.
Classification and varieties of drills
Based on the technical characteristics, electric drills are distinguished by their functions:
- shock;
- screwdriver, wrench, screwdriver;
- corner;
- mixer;
- universal;
- ordinary.
An impact drill is a combination of two actions. She uses a drill to create a hole. At the same time, when working with hard material, stone or brick, axial movement is simultaneously imparted to the drill. Drilling with simultaneous longitudinal fracture speeds up work. However, it is impossible to use such a tool on fibrous wood - the blade will split.
The angle drill is used in confined spaces where it is not possible to use a line tool. Rotation is transmitted from the motor through a gearbox and a chuck in which the drill is mounted. If the gearbox with the chuck is located with the letter G, the torque is transmitted at an angle and then the drill body itself is parallel to the wall on which the hole is drilled.
Use protective goggles to work with a screwdriver. Legs must be on a stable platform; it is dangerous to drill from a ladder.
Low-power devices with a lower number of revolutions use screwdrivers like drills. A drill with a special nozzle instead of a screwdriver is used to tighten nuts and screws. This is a tool for furniture assemblers, used in small household chores. If you need to drill a hole in the wood, a screwdriver will do the trick.
The drill mixer has special attachments for mixing paints and mortars in the construction of garages, gazebos and other buildings on the site. By replacing the stirrer with a drill, the drill is used for woodworking. A low-power tool is not designed for working with hard materials, it has no impact function.
All electric drills are subdivided into power tools and cordless. In terms of using the tool in an apartment, the network model of an electric drill will be the best choice. Batteries are used to work on the road, at heights, in new buildings. Modern rechargeable batteries have a large capacity; the set comes with 2 cells. While one is being recharged, the other is running.
How to determine the class of a tool
First, let's see what is offered in the budget category. Russian models are cheaper as they do not pay customs duties. This group of goods includes little-known European models and made in China. On Russian models, chucks for drills do not compete with eminent manufacturers. And Skill and Sparky products are of high quality, the acquisition will be successful.
Professionals buy expensive electric drills, under the DeWalt and HILTI brands. Expensive products of the "Metabo" company are comparable to them in quality. The rest of the brands belong to the middle class of instruments.
Screwdriver device
The electric motor transmits the rotation of the shaft through the gearbox to the chuck, where the working tool is fixed. All other details and functions are used to ensure the operation of this bundle.
The presented electric drill screwdriver is a modern piece of equipment from a well-known manufacturer. The tool can be operated from mains and battery. For expensive models, a charger is included in the box. The battery is charged in 60 minutes, there is an accelerator that will bring the screwdriver into working condition during a smoke break - 15 minutes.
Choosing the right tool
All electric drills are produced by leading companies in the amateur and professional versions. The line of household tools is designed for occasional use. Therefore, manufacturers use more plastic parts, reduce the number of useful functions, use a different type of battery.
Household tools are lighter and cheaper. For home use, it is cheaper to buy a network device. Rechargeable batteries do not like prolonged inactivity and become unusable from lack of recharge at a critical time. It is recommended to work with a household tool no more than 4 hours a day with breaks to cool the housing and bearings. When choosing a machine, you need to know that a high-speed drill is more suitable for drilling wood. Stone and brick are drilled at reduced speeds. The lowest speed is needed to screw in the screws, but there must be a reverse. This will allow you to quickly unscrew the fasteners by changing the rotation of the screwdriver.
Before choosing an electric drill screwdriver you need:
- determine the scope of the tool;
- pre-determine the cross-section of the holes in order to select the cartridge;
- check the length and quality of the cable;
- read reviews about the selected tool and inquire about the country of the manufacturer;
- carefully check the package contents when buying a drill.
A powerful tool like a hammer drill is only available in a professional version.
If you need to deal with the destruction of old concrete structures, you will have to choose a hammer drill as the most suitable tool. The function of a direct hit prevails over the rotation.
The difference between a professional tool
Drills for professional work have significant differences. The attachments that make the hobbyist tool multifunctional are not favored by professionals. Target use tool with two speeds. But a comfortable grip reduces fatigue. Despite the use of durable and wear-resistant parts, the weight of the tool is reduced. The tool is adapted to work in conditions of high dustiness or humidity.
Taking care of your instrument will prolong its life. You should never break the wire, keep the insulation intact. After finishing work, clean the accessible places with a brush, remove the drill for storage in a dry place. If the device was brought in from a cold room in winter, at least 2 hours should pass before operation.
Well-known manufacturers have received a patent for the color of the body of their brand products, with a division into professional and amateur products:
- Sparky produces a purple tool;
- Metabo firm - dark green case;
- Kress adopted black for the amateur sector and gray for the professional;
- The Bosh concern paints tools green for amateurs and blue for professionals.
Established and known in this sector of Sparky products, Bosh, Metabo, Rhythm and Interskol.
Which is better to buy, a network or rechargeable device
It would seem that for an amateur, a cordless drill is always the best choice.But the trouble with the Russian lines is in the unstable tension. For this reason, it is not only drills that break. The solution is to use a voltage regulator.
On the other hand, the networker is inconvenient, tied to an outlet. Even if you install an extension cord, work will become dangerous in wet weather outside. In addition, at the junction with the body, the wire breaks, the contact is broken.
Battery models are more expensive. The battery must be monitored and recharged in time. Lithium-ion batteries are considered the best, they are more powerful, hold a charge longer. Nickel-cadmium cells with a charge above 10.8 V are available for home use.
Here are general concepts to help you choose an electric drill screwdriver. More details about the operation of the device, its technical characteristics are written in the instruction manual.