To make an electric screwdriver work without pushing. Changing nozzles

What is the difference between a drill and an electric screwdriver and what to choose

This is a special kind of impact, not the kind you get from torches or drills. Imagine a wrench being thrown around a nut and a hammer hitting it with a hammer, tightening it further and further. It’s the same in our case: at first the tool rotates the screw or nut quickly, and when a more or less tangible force is needed, it switches to a frequent blow.How it works? The impact is produced by the so-called “hammer” that moves back and forth under the influence of the spring. As it moves forward, the “hammer” grips the “anvil” (part of the spindle) for a moment and thus transmits an angular momentum.

An electric impact wrench, whether cordless or cordless, provides a tangential impact in a plane perpendicular to the axis of rotation. In other words, when tightening screws, the force developed by the tool is not a continuous series of impacts, but a high-frequency series of small blows. Its operation is similar to that of putting a spanner on a nut and tapping it with a hammer.

The total power produced by a mains or cordless electric screwdriver of this type is the sum of the forces of the impacts it makes per unit time.

Externally, an electric impact screwdriver is very similar to its non-impact counterpart:

Description and features of the belt electric screwdriver

Electric belt-type screwdriver facilitates the master the process of voluminous, single-type work due to the available belt with screws. There are cordless and electric devices. The first type is compact, but when the charger sits down, the entire process stops, which can result in the tool breaking.

The electric unit is charged from the mains. The disadvantage is the short wire with which the device is equipped. However, this disadvantage is easy to fix. just buy an extension cord.

The motors of the unit can be either brush or brushless. Professional workers prefer the latter option, because in this case the process of operation is smooth and uninterrupted.

The distance of the self-tapping screws that are attached to the tape is equal. Thanks to this feature, the fasteners fit precisely into the defined target. In addition, there is an opportunity to adjust the depth of entry of fasteners, before they are auto-fed.

The housing of the device is most often made of aluminum, but there are models made of plastic.

It is worth noting that the tool comes in two versions. In the first case, it is impossible to use it without a belt, and in the second, the nozzle is removable, which allows you to remove it and use the unit in the usual mode.

Important! In terms of practicality, it is more advantageous to buy an electric screwdriver with a removable belt nozzle.

How to convert a cordless screwdriver to work from 220 volts

Craftsmen have come up with several ways to convert the screwdriver for electric operation. They all consist in providing the motor with the required power supply voltage by means of an intermediate source or converter.

Table: Power supply options for the power tool

  • Easy to rework.
  • Existing battery charger is used.
  • No need to adjust power supply voltage.
  • No intervention in the electrical circuitry of the screwdriver.
  • Easy to remake.
  • Nice engineering solution. only power cord comes out of the screwdriver.
  • No loss in the low-voltage cable.
  • No need to tamper with the electrical workings of the screwdriver.
  • Find a ready-made compact power supply for the voltage you need.
  • Power supply gets hot in closed box, need to take a break.
  • Nice engineering. only the power cord comes out of the screwdriver.
  • No loss in the low-voltage cable.
  • No need to tamper with the electrical circuitry of the screwdriver.
  • Need to pick up a circuit and find radio components.
  • The wizard must have experience in soldering, assembling and debugging electrical circuits.

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  • No need to disassemble the screwdriver and connect to its circuitry.
  • The power unit takes up space on your desk.
  • You need to find the right power supply.
  • Easy conversion.
  • A computer power supply is easy to find.
  • Any power supply from 300W will do.
  • You have to disassemble the screwdriver and connect to its circuitry.
  • The power supply takes up a lot of space on the table.

A screwdriver needs breaks

To make an electric screwdriver serve the owner long enough, it is necessary to use it correctly and remember: loading the mechanical parts of this construction tool to the maximum, you should not count on prolonged and simultaneously effective work. If the motor is running at full speed, it could overheat and cause winding faults. Special nozzles also have a hard time: they get hot when in contact with materials to be worked on. That’s why specialists recommend that you take a break from time to time to cool down. Do not use water to remedy the problem: drastic temperature fluctuations are not desirable.

The authors of the instructions for the tool warn: It is forbidden to change the course of the bit’s rotation, its frequency if the electric screwdriver is on. Sufficient lighting and stable power supply is required where this tool is to be used.

You must be careful if there are grounded objects nearby. It is strictly forbidden to touch them with an electric screwdriver, an electric shock will not be pleasant to anyone. To protect yourself, you must also be careful with your tool. For example, it is necessary to make sure that the housing is not exposed to moisture.

The electric screwdriver has successfully replaced not only different types of screwdrivers, but also wrenches, Allen keys. This tool is also used as a substitute for a drill. For builders with furniture makers, the electric screwdriver has become an indispensable aid. For him and at home constantly finds application. The assortment on the market is represented by a large variety of models. Despite the prevalence of screwdrivers in various industries, not all users, especially beginners, know how to operate it. Proper use, maintenance and storage of power tools will extend their service life to the maximum.

According to the power supply method, screwdrivers are divided into two varieties:

The external and internal design of the mains and battery models are almost identical. In general, the power tool consists of the following design elements:

  • housing;
  • chuck;
  • switch for the switch;
  • the motor direction switch (reverse);
  • regulator of speed (number of revolutions);
  • the power lock buttons;
  • tightening torque regulator (torque switch).

Several models are additionally equipped with lights, which are structurally realized in different ways. Not every product has a speed regulator and trigger lock button. Cordless electric screwdrivers have a power cord, but cordless screwdrivers have a charge capacitor instead.

The body of the power tool is most often made of plastic, much more rarely. of various metal alloys. For convenience, it usually consists of 2 halves. Inside the body there are such main parts:

The scheme of electrical connections depends on the model.

Electric screwdriver can be equipped with different types of chucks. The most common is the three-jaw quick-clamp version of this part. The screwdriver chuck also consists of separate parts, which are represented in the photo below.

The principle of operation is the same in both cordless and cordless wrenches. It is the electric energy that drives the electric motor. The gearbox and the shaft transmit power and speed from the motor to the bit fastened in the chuck. It already drills a hole or screws or unscrews fasteners. The peculiarity of the process is that the electric motor of mains models runs on an AC voltage of 220 V, and the battery models. on a constant voltage, the value of which can range from 3.5 V to 36 V.

O P U L L Y A R D E :


Soldering the radio components with solder ensures their firm mechanical attachment and electrical contact.

It is useful for beginners radio amateurs to read this article. Learn some rules and secrets of high-quality and reliable soldering. Read more.

Ornamental bridge will be a good decoration of a garden or household plot. It will fit well in the design, and if there is a pond on the site. it will serve as a transition through it. About how to make a simple decorative bridge for the summer house, everything you need to know about the construction of a decorative garden bridge, including tools and materials needed for the work we will talk in this article below.

If you need to clap your hands to turn on any device or just lights, you can consider making the simple circuits below in this article.

The circuit can be used to control a light, a table lamp, an appliance, a device, or a toy.

Operating tips, safety precautions

Dummies should familiarize themselves with safety precautions for safe operation of an electric screwdriver:

  • The use of third party batteries and battery chargers is prohibited.
  • Keep hair, clothing elements, e.g. sleeves, away from rotating parts of the tool.
  • Personal protective equipment must be worn.
  • Do not drill into walls if there are cables running through the hole. In unavoidable situations, the power supply is interrupted in case the wire is damaged.
  • The direction switch is set in the middle position for storage.
  • The tool should not be stored and used in damp rooms, rain, snow.
  • When working, the electric screwdriver is firmly held with both hands.
  • Do not operate the tool if it is damaged.

Details on how to properly use a cordless electric screwdriver beginners tells the expert.

Battery pack with locking button

Since the electric screwdriver can be wireless and wired, the power supply system in them is different. In a cordless electric screwdriver built into the battery, which is a device with built-in external contacts to transmit electricity. The main element of the battery is its power packs connected in series. Otherwise they are called cans sample on the photo.

It also has a thermostat to prevent the battery from overheating while charging. The battery is a removable device, because when it reaches the end of its life, it must be replaced. To the screwdriver battery is attached by a fixing button, which in some models is located on the side, and in others. on the front. Contact plates that connect to the battery and provide power depart from the handle.

Other ways of power supply

The unit inside

The solution of the problem “whether it is possible to connect an electric screwdriver through a charger” can become an alternative option of powering an electric screwdriver. the installation of a power supply unit in the empty housing of the power tool.

Before starting the action, it is necessary to prevent overheating of the unit, for which purpose, holes are arranged in the housing in advance, which will provide air movement, heat extraction. The continuous work time of an electric screwdriver with this improvement can be reduced to 15 minutes.

A ready-made unit is purchased, it is selected according to the size of the housing, technical indicators. The pulsed version of the module is the most usable, small and lightweight. We do not recommend the use of modules of domestic production of the times of the last century. they have a large volume at a low efficiency.

Unsuitable batteries are removed from the bed, and the power supply is put in their place. Contacts are energized, the case is closed. Assembled hybrid gadget is ready to work from the mains.

  • Wires can be lengthened for convenience.
  • It is necessary to monitor the quality of the assembly: the design should not be able to touch the metal elements, otherwise a short circuit will not avoid. It is best to leave some space between the transformer and the board, which will have a positive effect on cooling.
  • If any parts of the structure is very warm, you can install the module that takes away excess heat, or the device ventilation slots.

By your own efforts

For users with special knowledge, skills, will not prove difficult the problem of “can you power an electric screwdriver from the charger without special tools”, t.к. Assembly of the power supply unit is possible with your own hands. The power supply module, assembled according to the circuit, is inserted into the housing instead of the damaged elements. Outgoing voltage is monitored, wires are energized, and the case is locked.

Tip: The circuit may require additional load, it can be provided by the inclusion of a 15W light bulb, which will also provide backlighting.

A computer power supply will also work

Another solution to the problem of powering an electric screwdriver. mounting it to a computer power supply. This option applies to such modules, which are equipped with a mechanical lever. The positive aspect is that the unit is cooled by a cooler, protected from exaggerated loads by a built-in special system.

Such assembly is arranged only with the use of power modules for 300-350 W and current of 12 volts, not less than 16 A. For tools with a voltage greater than 14 volts, this powering option does not work.

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The user may want to hide an unaesthetic block in a beautiful case, then it is recommended not to forget to arrange ventilation in it.

Automotive charging

When looking for a solution to the question “can an electric screwdriver be plugged into a battery charger”, you might consider charging with an automotive AK unit. Modules with manually adjustable current, voltage are applicable. Connection is absolutely easy. it is enough to connect the input channels of the tool motor with the contacts of the car charger.

General suggestions

All of the above methods include one unifying stage. disassembly of the housing of the supply module. If the frame is fixed with bolts, it is not a problem, fixing it with glue requires a careful opening of the seam by tapping on the gap with a hammer.

When installing, observe the direction of voltage. it must not apply to the battery. Therefore, the module is mounted in parallel with the power contacts, in the plus line is built a diode illuminator of a certain power.

Summary: The question “can an electric screwdriver be powered by a battery charger” is positively answered, and there are several possible solutions, but it requires caution, some scientific knowledge and a knack for.

an electric screwdriver with self-contained power source, is unequivocally one of the best inventions of mankind, and it greatly facilitates the life of almost all men.

How to extend the life of a tool?

Above all, buy the tool in stores, from reputable manufacturers. If the buyer sets himself the task of using the electric screwdriver as effectively as possible, then first of all, he should carefully read, memorize and then follow the instructions for use, especially if he is new to using screwdrivers. electric screwdrivers need to be protected from damp, extreme cold and dust. Batteries need to be stored and charged according to their own instructions, if included. Also use only the original battery charger. When getting ready for work, charge both batteries in advance.

When working on the ceiling it is useful to put a thick cap of kapron or a piece of cardboard on the bit as a protective washer against debris. The chuck of an electric screwdriver is well protected in this way. Never place the electric screwdriver lying flat on a table or shelf close to the working area unless you risk dropping it. This prevents debris from getting inside.

Do not work all the time in drill mode (with the ratchet off). When tightening screws, choose the optimal tightening torque, starting with low. Also do not work with the ratchet for too long, it will quickly wear out the torque limiter socket.