What is an Electric Drill for??
In this article, I would like to explain to readers what an Electric Drill is, why it is needed and how to correctly approach the issue of choosing this tool. Probably, it’s not a secret for anyone what a drill is for? Actually this is a tool for “making” holes in various kinds of materials, for example, wood, metal, plastic, etc. But progress does not stand still. Now drills are also used for grinding various materials. The drill can also be used as a motor for a small garden pump. But, be that as it may, the BASIC function of the drill is drilling. Other. The so-called “features”, “bells and whistles”, “gadgets” optional. I don’t think it is necessary to explain how the Electric Drill actually looks like. But here’s how to choose the right option for an electric drill for your purposes and at the same time NOT a prog with the price and quality? I will dwell on this issue in more detail. So, when choosing a drill, you need to build on several factors. 1. For what purposes do you need this tool? Ie, what are you going to drill? 2. How often do you plan to operate this unit? Regarding the first point. You need to decide what materials you are planning to drill. The power of the drill required to make the hole depends on this. If you plan to drill NOT hard materials (eg wood, plastic, thin sheet metal), then you do not need much power. A drill with a power of up to 650 watts will be enough. If you are planning to handle hard materials (eg brick, thick metal), then you need to choose a product with a power of 700.900 watts. If you periodically plan to drill holes in concrete or mix building mixtures, then you will need a drill with a power of 1 kW or more. Why is this so important? Here the power of the drill depends on its overall size. That is, the higher the power of the tool, the larger it is and, accordingly, the heavier it is. This will greatly affect the comfort at work and the degree of your fatigue. In addition, the correct power will affect the durability of the tool. This means that a low-power drill can drill thick metal, but at the same time the wear of the device’s parts will be much higher. The second point depends on which class of power tool your drill will belong to. In the post-Soviet space, there are three such classes: everyday class, semi-professional and professional. The household class includes products, the operating mode of which fits within the framework of 3 to 5 hours of work per day. Accordingly, this class is NOT particularly reliable. In the manufacture of the power parts of such a tool, secondary materials are used (for example, Silumin, powder pressed metal, etc.). But, this tool is the cheapest and does not require any additional knowledge and skills from the owner. Semi-professional drills are designed for a load of 5-8 hours a day. Better materials are used in their manufacture. But at the same time, the cost of such devices is slightly higher than that of household ones. Professional power tools are designed to perform work of 8 hours a day or more. These tools are of the highest reliability, durability, ergonomics, etc. The cost of such devices is the highest and it is NOT economically profitable to buy such a tool for “home” use. In addition, such a tool often requires Special knowledge to maintain and maintain it in working order. Thank you for your attention, I hope the information was useful to you. Good luck!
Maximum drilling diameter. A parameter showing the objective capabilities of an electric drill. Before the purchase itself, there are notions of what width you will drill and buy a drill that can work with it. If you overdo it with diameter or power ratings. You risk breaking the inner rig on the first day. When you get your home tool, THESE jobs do not require a large drilling diameter (like the Bosch GSB 13 RE). What can NOT be said about professional and construction work, where the required power is much higher.
Chuck type Electric drill
In the electric drill on the modern market, 3 main types of cartridges are used:
1. Toothed or key chuck: here the drill bit is installed using additional keys. Usually it is fastened with three cam clamps near the spindle and difficulties arise only when the device is lost;
2. Bit: this is the name of a specialized bit with a hexagon at one end and slots for fastening. With another. The bat is installed using a cartridge fixing, and it is pulled out with little or no effort. Due to the wide variety of bits that come with the tool, one screwdriver is recommended to be used at once for a number of operations and types of screws;
3. Keyless chuck: this mode remains the most popular for electric drill. It is easy to use and saves time when fastening and replacing. Remember that ego is not advised to be used for rigid materials and at definitely high loads.
If you are looking for a home electric drill. The most comfortable option will be the option with a keyless chuck. With it, you will not spend a lot of time looking for a key, and the loads should not be colossal. But if you are looking for a professional tool designed for heavy workloads. The serrated chuck will handle this with great success.
Which drill is the best for drilling metal? Ask your first construction professional and he will point you to a hammer drill. Anyone who has drilled wide holes in stone and concrete walls at least once should tell what it is. What is the secret to their productivity? It is that in addition to the standard rotation of the chuck, the impact drill is subjected to regular reciprocating movements.
In fact, you don’t need to think a lot about how to choose a hammer drill. Most tools are capable of hammer drilling. But with one of them, drilling concrete is much easier. Often they have 2 speeds, which can be switched without much time loss, it all depends solely on the surface from which the work is going. It is with the impact type of devices that there are chances to achieve the optimal rotation mode.
How to choose a drill 8 basic criteria
Drill. It is an electrical device used for the purpose of imparting rotational movements to the drill bit. It is difficult to find another device of such colossal importance for construction and home renovation work. With his participation, builders learned how to cut holes in materials, tighten screws and self-tapping screws, and even prepares mixtures for construction purposes.
When you want to acquire a reliable device, but do not know which one will work more productively, you need to understand the essence of its technological parameters. And the first question asked by an experienced buyer. What kind of device do I need?
If you are looking for a tool that will function with confidence in places of limited accessibility, an angle drill will help. You will recognize it by its small size and characteristic shape (in the form of the letter “G”). The compact parameters of such a device will help wherever the internal clearance between materials is low, and access to them is limited.
Drill. Universal device. But not all of them cope with stone and iron. NOT every drill is suitable for mixing concrete, and only a few will work in restricted access areas. And when you are performing construction tasks, drills of one kind are NOT enough. So which drill should you choose for concrete? What is the purpose of a hammer drill and how to choose one? You can freely find the answers to them, read in each of the categories in more detail:
The special attachments supplied with the device make an ordinary tool a drill-mixer. Such a device makes it possible to conveniently mix building mixtures of a liquid or semi-liquid consistency (glue, paint, cement, etc.).
What is a drill for?
The main purpose of the drill. Drilling, but with the help of attachments (“Drill attachments”) the drill can perform a number of other functions:
- Twist or untwist fasteners;
- Grinding and polishing surfaces;
- Stir building mixtures, etc.
If, in addition to drilling, work with fasteners is meant, it is better to choose a drill-screwdriver. However, it is worth considering that such a tool is NOT suitable for drilling brick and concrete.
Also, instead of a drill-screwdriver, you can purchase a regular screwdriver (“How to choose a screwdriver”).
Plug-in tools are good for applications where continuous operation is required. Thanks to the continuous supply of electricity, such models are highly powerful.
The hammer drill has a special impact function that allows you to make holes in concrete or other hard materials. This drill is more expensive than usual.
How to choose a drill for home
Before purchasing a tool such as a drill, it is necessary to study the technical characteristics of each model and pay attention to the following:
- Cost. A quality tool will usually cost more;
- Manufacturing firm. It is better to choose models from trusted manufacturers (“Top best drills, hammer or hammerless drill, which is better”);
- Power. The higher the indicator, the more powerful (300. 1500 W);
- Shaft rotation speed (up to 3500 revolutions)
- Convenience in use. The drill should be comfortable;
- The presence of a dust collector;
- Equipment. Many manufacturers complete the tool with various attachments, spare parts;
- Depth stop for drilling;
- The presence of an anti-lock clutch. Burnout protection of the tool;
- Anti-vibration function. Reduces vibration during work;
- The presence of an additional handle (can be detachable and included);
- The presence of a reverse. Changing the direction of rotation, especially this function is important when the drill is used as a screwdriver;
- Backlight presence.
It should also be borne in mind that drills can work both directly from the network and on rechargeable batteries.
. Impact crank mechanism. Functionality. It is important
In this regard, the hammer drill is significantly ahead of the drill. After all, he has as many as three modes of operation. It’s spinning, spinning hitting and just hitting. Accordingly, with the help of an electric punch, you can not only drill the wall, but also punch it. Punch a large hole, gouge a groove for the cable, chipping off a piece of the wall. All this is within the power of such a powerful tool as a hammer drill. But the hammer drill has only two modes. Standard drilling and hammer drilling. over, the force of this blow is not as powerful as that of a perforator.
And here the hammer drill takes the lead again. After all, the impact energy he has, no doubt, is greater than in an impact drill. Therefore, working with a hammer drill is much more comfortable. It does not necessarily have to be pressed as hard as the impact drill. Working with the latter, it will be extremely difficult to punch a hole without significant pressure.
. Impact mechanism type “drunk” bearing
Well, the crank-type mechanism transfers its rotational energy with the help of a piston, which with compressed air gives a push to the working part of the perforator.
Differences between a drill and a hammer drill. Where and why is the drill used?
Let’s talk about the drill first. Even an inexperienced person knows that it is with this tool that, if necessary, you can drill large or small holes in almost any material. If the drill is equipped with a percussion mechanism, then it can also punch concrete walls (that is, work in percussion mode). However, this mode is easy to turn off; switch to traditional hole drilling, which is very convenient. But this is NOT the end of the drill.
Depending on what material needs to be drilled, various types of drills are used, which both look different and are intended for different purposes.
1. Yes, wood drills are useful for drilling a wooden surface, but in most cases they are replaced with ordinary metal drills. In some cases, feather drills are used for drilling wood.
2. If you have to work with metal, then you need other drills. durable, with a specific design.
3. And with tiles and glass, you should be careful. That and look, instead of an even hole, a chip will turn out. Therefore, to solve such problems, there is another type of drill. These are lance drills for ceramics and glass.
4. For making holes of large diameter, core drills are the best option.
5. As mentioned above, when the hammer drill works like a hammer drill, it is capable of hammering concrete and brick. Although she will not become a full-fledged puncher. But she can do work of medium complexity. For THESE purposes, drills with victorious tips are used.
To grind the surface with a drill, just use a grinding wheel as a nozzle.
If there is a need to clean various metal surfaces on the drill, it is enough to put on a special brush made of steel wire.
If the wire is bundled into the brushes. Twisted, then the processing will be rough. For finer finishes, use a corrugated wire nozzle.
If you need to mix some kind of mass, then the drill can be easily converted to a mixer. For this, there is also a special nozzle.
This makes the impact drill a versatile tool capable of many functions. In the presence of some additional tools, it can work with a mixer, and a screwdriver, and a grinding machine, or, when the chiseling mode is turned on. Perforator.
Using a drill bit for sharpening drills
With the help of various attachments and attachments that the modern market offers, an ordinary electric drill turns into a multifunctional tool capable of performing the tasks of a lathe and milling machine, pump, circular saw, etc. drills, very helpful in the absence of an emery machine. Of course, It will not completely replace the machine, but it will be possible to restore the geometric parameters of the tool in your home workshop with it.
The design of the nozzle for sharpening drills includes a plastic case, inside which the emery wheel rotates with a special shape of the working surface, which on the working part of the tool allows you to form the desired angle. The emery wheel rotates thanks to a drill, with the shaft of which the attachment of connections using a special coupling.
Most modern models have an end cap on the body with holes of different diameters in it, designed to sharpen drills of different sizes. The holes are made so that the tool, whose working part is inserted into them for sharpening, touches the emery wheel only in a certain position.
Sharpening is done like this:
- The drill, whose cutting part needs to be sharpened, is inserted into the hole of the correct diameter in the nozzle body.
- The drill turns on, the rotation of the emery wheel begins, one half of the cutting part of the drill is sharpened.
- The tool is turned through 180 ° in the holes of the nozzle, the second cutting edge is sharpened.
This procedure is performed until the required parameters of the cutting part are reached.
A sharpener that is mounted on an electric drill can be of a simpler design, in which there is no cover with holes that act as a jig. Attachments of this design Inconvenient, since it is required to hold the processed tool on the weight and all the time Make sure the sharpening is correct. The drill attachment, which is used for sharpening, can be made by hand. By design, homemade nozzles are not much different from analogs made at the factory. As a rule, the following elements are present:
- Mounting ring or coupling for connecting to the drill chuck and transmitting torque to the working body of the device.
- An emery wheel whose working surface must be cone-shaped on a lathe.
- Emery wheel mounts.
- The top cover, which plays the role of a conductor, provides convenience and correct sharpening.
In addition to nozzles for sharpening drills, the market offers devices designed to restore the geometric parameters of the cutting parts of second tools, in particular: nozzles for sharpening circular saws, chisels, knives from planers and other similar tools.
Advantages and disadvantages
When evaluating the effectiveness of devices, remember that they are NOT intended for intensive use. Without the presentation of excessive requirements and the use of devices for their intended purpose, complaints are not required. The cost of the attachments is low. Since the design is simple, it will be possible to learn how to handle them in a fairly short time, even if there is no experience at all.
The disadvantages of the device are as follows:
- The drill sharpener is designed more for dressing “hooked” edges. If you use it for full-fledged sharpening of very dull products, the emery wheel will be enough for a short time.
- Most models are not particularly secure on the chuck.
- The angle at which the drill is sharpened is incorporated in the design of the device, and this parameter is almost impossible to change.
- When buying an accessory, it is not always possible to try it on to the chuck of a specific drill model. As a result, the rotating chuck often touches the inner surface of the adapter.
If you do not use a homemade bracket, with which the drill is fixed during operation complete with a nozzle, it is not particularly convenient to use the devices: at the same time you have to hold the drill with your hand, turn it on and off, and with your other hand manipulate the drill, directing the tool into the holes is in the cover of the device.
Selection criteria and application
The first thing to pay attention to when choosing. Compatibility of the bore diameter in the coupling and the diameter of the drill chuck, on which it will be mounted. The angle of sharpening of the tool is also important, which provides this device.
Many bit manufacturers include a sharpening stone in the kit, with which the drills can be sharpened at a different angle. To make the functionality of the device wider, it is better to choose the model with an additional grindstone.
You should not overload the device if you want it to last longer. Attachment Indispensable in a small home workshop where an emery machine is not always available.
Design features of devices
The whirlpool and hand drills differ in design from each other, but they perform the same function. If in the brace the moment directly depends on the number of rotational actions by the human hand, then in hand drills this value is 2-4 times higher at the same speed of rotation of the handle.
Hand tools are classified into one- and two-speed. The two-speed hand drill is equipped with 4 gears. It is through THESE gears that a decrease in torque occurs and an increase in the rotation speed of the chuck, at a time when a person applies a force of equal magnitude. To change the rotation speed, you need to change the drive shaft.
The main structural elements of the handicraft are:
- Gears in the amount of 2-4 pieces
- Drill chuck
- Handle used as an additional stop
- Thrust foot
The principle of operation of such a product is very simple, and even a child can use the tool. When the handle rotates, a large diameter gear with a large number of teeth moves. A large gear, called the leading one, drives the driven gear, which is several times smaller than the previous one. This is how the torque changes downward, with an increased speed of rotation of the shaft, to which the cartridge with working nozzles is fixed.
Hand drills and the relevance of obsolete tools
In the existence of such tools as hand drills, many young masters do not even guess. Having seen this tool for the first time, the question arises, why is it needed, if everyone has been using electric for a long time. Hand tools have been very popular since the days of the Soviet Union. With the advent of the electric tool, handheld devices were forgotten but did not disappear altogether. Surely every master over the age of 40 has a device in question in his arsenal, which can periodically benefit.
Advantages and disadvantages
Each tool has its own advantages and disadvantages. The product in question has the following disadvantages:
- The physical strength required to perform drilling work. Nowadays it does NOT hurt to work muscles sometimes
- Length of the product. When working, such a tool is convenient, which cannot be said about its transportation
- Large weight, which sometimes exceeds the mass of electrical analogs
Among the advantages are:
- No need to connect the tool to the electrical network. The device works depending on the presence of physical strength in the user
- Low cost, even today manual modifications of drills are produced, the cost of which does NOT exceed 1000 rubles. However, the quality of THESE products is inferior to those that were produced during the Soviet era.
- Uncomplicated design. The simplicity of the design affects the cost of the unit, which is already low, as well as reliability. The simpler the design of the tool, the more reliable it is, and it can be repaired by yourself
Where are hand drills used?
The first human invention that manually drilled holes in concrete and wood was called a gate. On the basis of the brace, manual or mechanical types of drills (and later electric ones) were invented, which gained wide popularity. The circulation has the form of a curved frame, which is equipped with a chuck for fixing drills.
The circulation was not a very convenient device when working, which prompted the developers to create a hand-held drill. All the need to return to the past, so let’s dwell on the question of where is now used such a device as a hand drill.
The use of such drills today is no longer as relevant as 30 years ago, but they are still used for screwing screws and self-tapping screws. For such purposes, screwdrivers are used, but not everyone has such tools. Sometimes the power of a screwdriver is simply not enough to screw a screw into a wooden or plastic base. It is also problematic to do this with a screwdriver, so a manual apparatus always comes to the rescue.
The product is also used for drilling holes with crowns. The screwdriver has a low power for working with crowns, and the drill has a high rotation speed of the chuck. While drilling large holes with a hand tool will take longer, it will definitely not break the tool. The tool in question cannot be called the most necessary, but you should not rush to get rid of it either. In addition to home workshops and garages, where the instruments in question are used very rarely, they also continue to be used in medicine. Without his help, it becomes simply impossible to carry out operations on bone tissues and when installing pins for splicing bones.
Electric counterparts, although they are capable of doing work tens of times faster, however, they do not have such a large power reserve as hand-made products. Drilling a hole in metal with a hand device is problematic, but making a hole in wood or concrete will be easy.
How to work with a power drill
Safety rules are observed when working with any tools, including hand tools. They are just as dangerous as electrical ones if used incorrectly. To avoid serious injury, follow these guidelines:
- Securely fix the part to be processed
- When drilling, the drill heats up, so you need to pause periodically to let the bit cool down
- It is recommended to use the product with goggles