There is a jesting saying: "Scorn with a hammer screw, keeps stronger than the twisted nail with a screwdriver." Combine the impact power of the hammer and the screwdriver torque tried many homemade masters.
It usually ended in a breakdown of the tool. Finally, the screwdriver was invented by the shock-rotary, in which the impact force is properly converted into the torque.
Actually, the principle of action of the drum screwdriver is similar to the work of the jumper. The locksmith holds the handle in one hand, and the second strikes the hammer on the end.
There are two main types of power screwdrivers working on the principle of bit:
Shock.
This is a modified jumper. Only the main purpose, not work as a jackhammer - and still unscrewing and twisting the screws.
Distinctive feature The tool - the sting of the screwdriver passes through the length of the length, from the working slots to the heel of the handle. In this case, it is monolithic, no docking or welding connections are unacceptable. Of course, only high-quality alloy steel is used for the manufacture of such tools.
To realize the full potential of the screwdriver, the state of the hexagon is attached. On the heel of the handle may also be present a square or hexagon. Of course - it is one whole with a sting.
How to use a shock screwdriver? For greater efficiency, it is better to work together. The slotted part is installed on the unscrewed (twisted) screw, the key is put on the hexagon, and simultaneously with the torque, frequent short shots are applied along the back.
A helper should work with a hammer, saving to get on the hand of the main worker.
Sweep screws are given due to vibration, and easily unscrewed. However, direct conversion of the strength of the blow to the torque, such a type of screwdriver cannot be provided. Tapping with a hammer on the handle only helps unscrew or spin the "heavy" screw.
Important! Many Mount Wizards use shock screwdrivers as a jumper. It is unacceptable.
Firstly
- For these purposes there is a specialized tool, more durable and massive. In addition, a real jumper has a hand protection in the form of a rubberized fungus. If the hammer jumps down from the heel of the shock screwdriver handle - you can get a serious hand injury.
Secondly
- When using a screwdriver as a shock tool, it will very soon be hopelessly spoiled. And the cost of such a snap is much higher than a simple jumper. 
There is a simpler version of the drum screwdriver, familiar to you from Soviet times. The monolithic case with two wooden linings ensures reliable power transmission to large screws. If you are not kept, and used a screwdriver as a bit - you can always restore the slots using a file.
Shock-swivel.
In this sufficiently complex mechanical instrument, two power components are combined: a blow to the end part, in addition to direct exposure, is converted to the torque.
The principle of work resembles a shock drill. On the slotted part, with a sufficiently strong turning force, the vibration from the knocked hammer is affected.
Important! Such a screwdriver can be used alone.
It saves time and health. The likelihood that you will strike on your own fingers tends to zero.
The mechanism of the rotary screwdriver is inside the handle.
It is a pave of a small angle of spin relative to the axis. Rather, it is a gear with oblique teeth. It affects the rope-ratchet. When applying shots on the heel of the handle - the clip moves forward, and the gear is scrolled in the direction that the switch is selected.
As a result, two efforts are transmitted to the working nozzle - rotating and progressive. They act synchronously.
Advantage of construction - effective use Stroy force, tool multifunction. The advantages include less effort, with which the hammer strikes are applied.
The disadvantage - the design is not monolithic, so the effort should be dosed. The mechanical part is susceptible to wear.
And of course - the price. Such devices are quite expensive (it is not about Chinese and Polish disposable fakes).
The shock-swivel screwdriver handle serves as a handle and as a body for the mechanism. In addition to structural strength (it is necessary to hold the mechanical part), the handle also performs the role of protection for the hands of the master.
Steel housings-handles.
This tool refers to the category of professional. A durable steel case is simultaneously a row for the rotation mechanism. The absence of extra layers on the handle allows you to place a screwdriver in hard to reach places. One-piece design provides accurate dosing of effort and excellent control over the process.
Such a tool usually comes in the form of sets with different nozzles. All the same, the design is not monolithic, and therefore it is possible to add it universal cartridge for standard bits.
Only when buying additional nozzles should be remembered for increased loads, and do not save on quality.
Component handles
The housing of the screwdriver mechanism is covered with a rubberized shell. The material may be different - polyurethane, rigid polyethylene. The main thing is to ensure damping and durable hold in your hand. In the heel part of the handle usually make a tide in the form of fungus. Like on jumper - it gives additional defense Hands in the case of inaccurate hit by a hammer.
Part of the mechanism, the soft handle can not be too large. Therefore, the question of the size of the power part arises sharply (and therefore, the stock of strength). If the mechanical part is to leave powerful and overall, as in products with steel handle - the total dimensions of the screwdriver will not allow working in cramped conditions.
Reducing dimensions reduces the strength of the tool, but makes it more convenient.
You can always choose the option that meets your requests.
At first glance, it may seem that the tool serves as a replacement of the screwdriver. These tools cannot perform each other's functions. A shock-swivel screwdriver serves either for the final tightening of the screw connection with great strength, or for the "breakdown" of the thread.
Important! For high-quality tightening, and especially breaking the thread, there is no need to heat the hammer on the handle. Much more efficiently uniform inhibiting short-accurate blows.
Despite the complexity of the design, such a tool can be made with your own hands. Of course, it is not necessary to pull the gear-bouwich gear on the millpirnik. Spare parts are available on any car disassembly. The starter mechanism is ideal for these purposes.
The rotor with windings is cut from the shaft.
The remaining shaft and the sleeve will serve as the basis of the mechanism. On the sleeve stead the square for replacement heads.
From the cut pipe, we make a handle, from a powerful bolt - a shock heel.
After welding the design, the finished tool turned out.
Let it not be so pretented as the factory - but the cost is striving for zero. And reliability is no doubt.
Quite often, during fitter work, it is necessary to deal with rusty bolts, screws, self-drawing. An attempt to use a conventional screwdriver either does not lead to success, or entails the risk of ripping the slot of the screw or damage the sting of the tool. A special difficulty represents the unscrewing of steel bolts from aluminum parts, since over time, corrosion makes such a connection practically all, and the materials "bind" to each other.
To solve such problems, a tool called the shock screwdriver was invented.
Simple shock screwdriver It is a tool with a monolithic core, beginning with sting and ending the massive heel on the handle. Such a screwdriver, having a handle with two wooden lining, is known to everyone from Soviet times.
IN modern models About sting or on the handle, the core has a hexagon, which allows you to transfer the rotational force from the key. Use such a tool is recommended together. One person holds the sting in the screw slice and creates a spanner torque. The partner also strikes the hammer on the back of the handle.
To use this tool there are two main minuses:
Shock-swivel screwdriver was created to eliminate these disadvantages. This tool is already a mechanism that allows you to transform the force of impact rotary traffic sting.
Here and then under the term "shock screwdriver" we will imply rotary screwdriverSince this name is fixed by this tool.
The shock-rotary mechanism is located in the handle. The sting is rigidly connected to the gear having oblique teeth. Handle is a clip having a response teeth. When hitting the hammer on the heel, the honeymaker moves along its axis and attached through shogging Rotational motion sting. The turn is carried out only for several degrees, but this is enough to weaken the connection and complete the unscrewing to the usual tool. After hitting the hammer of the clip using a spring returns to its original position.
Work with such a tool quite simple. The mechanism provides a total progressive and rotational force effect on the slot of the screw, which is most effective for the successful unscrewing of the unsuitable threaded connections.
Available models may differ from each other with technical characteristics and complete set. Consider in more detail these differences.
Here we will not consider the quality of execution and reliability of the materials used. It is clear that the models from well-known manufacturers are made of "correct" steel, which has the necessary hardness and durability.
More important will noted that more advanced models equipped with reverse. They allow not only to unscrew rusted compounds, but also produce a strong screw tightening where it requires a bonded design.
Another important point is the handle device that performs the functions of the handle for holding and the body of the mechanism.
Steel case is most reliable, allows clearly control the work process and optimally dispening efforts.
If the steel case is placed on polyurethane, rubber or polyethylene, the screwdriver is much more convenient to hold. When the lining has a tide in the heel part, the safety of operation increases. Manufacturers can go one way from two:
The choice of the most suitable option remains for the buyer.
It is ineffectively producing a separate shock screwdriver for each slot. Most often tool implies use of universal nozzles. The screwdriver is completed with a cartridge holder for standard bits. Included may be present as a pair of nozzles and a decent set.
Nozzles for various slots and hexagons are widely represented. When they acquired, special attention should be paid to the quality of manufacture. Quality and reliability are especially important due to the impact of shock loads.
The most important advantages Shock-swivel screwdriver are:
Disadvantages are not so significant With proper operation, but it is also important about them:
To maximize the process of unscrewing, It is necessary to comply with some simple rules:
If the tool has a reverse, some specialists are recommended after the first offset of the screw head to set the twisting mode and make a couple of blows, and then unscrew the methomeh again. Explain this by the fact that with this approach, the rust is even better removed from the thread.
It is important to comply with the safety technique:
To learn how to use a shock screwdriver, help video, widely represented on the Internet.
It is important to remember that the impact screwdriver and the shock screwdriver are not a replacement for each other. The screwdriver also reports the impact force in the plane perpendicular to the axis of rotation. In this, by the way, his difference from the shock drill, which creates shock loads along the axis of rotation. However, the screwdriver only facilitate the process of unscrewing and twisting the already rotating screw.
These tools perform completely different tasks:
After studying the features of the drum screwdrivers, it is recommended to watch the video in which the reviews of various models are presented. This will help not make a mistake with the choice when buying and become the owner of a useful and reliable tool.
Impact screwdriver today is a very popular tool not only in construction, but also to work at home. It will be simply indispensable in those situations when it is necessary to unscrew the firmly "welded" screw. An ordinary screwdriver In this case, you just can not help with anything, but the shock is completely different.
If you look visually, the similarities with the usual screwdriver are very small. This model has a metal housing that makes it more durable and even allows you to withstand strong blows with a hammer.
A set of shock screwdrivers usually comes in a set with two nozzles: flat and cross. The connecting part where the nozzles are set, has a square shape. In fact, it is very convenient for the reason that the end heads can be fixed in it, which will give you the opportunity to work with bolts, self-draws and screws. This is especially good for the category of people who are constantly engaged in car repair.
With the help of a shock screwdriver, you can not only unscrew the fasteners, but also to install new ones. It is worth noting that this tool twists the details "on the century". Believe me, you will not turn out later to unscrew the bolt with a regular screwdriver.
The principle of operation of the instrument is not as folded as it might seem at first glance. When a hammer is hit in the end, the lower part begins to rotate with such a force that is enough for the nozzle to cope with the strongest fastener.
Brief instruction:
After the fastener begins to turn around its axis, make a few more blows with a hammer. This is necessary so that the screwdriver switched back to the "spinning" mode. As you can see, it's not so hard to figure out how to use the shock screwdriver.
Oddly enough, it is possible to make this very useful tool at home without much effort. The main thing is to figure it out how the drum screwdriver works, then the work will go much easier.
Getting to work:
Our homemade tool is ready. You need to attach only a little effort, and believe that the impact screwdriver will not be worse than any purchased model.
There are cases when you need to unscrew strongly rusted fasteners. What to do in this situation, because household tools do not cope with this task. All you need is a shock screwdriver. It is difficult to believe that it is able to unscrew the resulting item.
Moisten the bolt with a small amount of brake fluid and make sure the item will easily go out. Of course, it happens that it does not help. It is not necessary to despair. Moisten the liquid you use for the brake system of the car, and leave for several hours. After that, you can make the necessary work with a shock screwdriver.
The tool can be purchased in the store or do at home. In any case, in addition to the case, you will need additional nozzles. It will save you from unnecessary tools. Imagine how nice when in the box instead of ten screwdrivers lies only one - the shock, and the nozzles will be attached to it that will help you in any construction situation.
Main types:
As you have managed to make sure the shock screwdriver has a very simple principle of operation. This is useful I. required tool In the arsenal of any mechanic who can easily help unscrew even the most discovered bolts. Having done it with your own hands, you will work with pleasure. Be sure that it will be at all worse than the models from specialized stores.
In order to make a shock screwdriver from the starter with your own hands, you will need:
* Roasting machine, cutting wheel, safety glasses, gloves
* Locksmith vice
* Faulty car starter
* Old knob with a tetrahedron
* Metal pipe diameter equal to the diameter of bendix
* Metal lathe, passage cutter
* Couple of small springs
* Metal washer
* Welding machine, welding mask, crag
* Boring machine, metal drill with a diameter of 5 mm
* M6 thread tap
* Kern.
* Bolt M6.
* Boring cutter
* Little hammer
* Malyary Scotch
* Roll-paint spray
Step one.
First of all, you need to disassemble a faulty starter from the car, only two parts will be needed from it,
this is an anchor of the electric motor and the Bendix, on which the principle of unscrewing will be founded. You can buy a non-working starter on a metalwear for which a penny will be asked in comparison with the purchase of a shock screwdriver.
Step Three.
In order for this screwdriver to install different heads, you need to cut off the tetrahedral part from the gorge with the HSM.
The impact screwdriver is an indispensable tool in those strict cases when the task is to unscrew the rusty or strongly tightened screw or self-tapping screw. To unsclude rusty screws or screws, an ordinary screwdriver is not suitable, as attempts will lead either to breaking the slot of the screw, or to damage the sting tool. Special difficulty arises in those situations when a steel screw under a screwdriver is screwed into the aluminum part. Under the influence of corrosion, a dense clutch of two materials occurs, as a result of which only a shock screwdriver cope with the task.
Shock screwdrivers that are produced by production differ in each other technical features and complete set. The main difference of the shock screwdriver from the ordinary tool is the presence of a reinforced metal case. Moreover, this case is several times more than the design of the standard tool. By technical characteristics The products under consideration are different:
The scope of the tools data is wide enough. These tools will be indispensable not only in home everyday, but also in various workshops, especially where car repair is carried out. Rotary screwdriver allows you to use it not only to unscrew the rusted screws, but also for reliable screwing them.
The main characteristics of the tool are presented above, but it is important to mention the varieties of tips for a screwdriver. Screwdrivers drumbles are almost always complete with replaceable bits. Each kit most often consists of a screwdriver and four different bits (two crosses and two flat). The use of these tools is so effective that it is necessary for each self-respecting masters should be available such a power screwdriver. In addition, it is also easy to use it, as well as usual.
The principle of the impact screwdriver is based on the effects of shocks on the tool body with simultaneous scrolling of the bits in the desired side. For this, the housing is made of high-quality steel, which without much difficulty can withstand shocks with a hammer. When strikes are applied with a hammer in the handle, then the clip with the bat moves to the side, thereby carrying out the displacement from the site of the "baked" screw. The angle of rotation of the closure when committing a little bit, but it is enough for the screw to be "ripped." In the same way, the screw is tightened.
The considered tool is intended exclusively for the "breakdown" or tightening screws. After the fastener is "rugged", you should use the usual tool.
To increase the efficiency of discerning the fastener element, it is important to pick the nozzle as accurately as possible. Due to the double exposure to the fastening element (directly along the axis, and turning to the side) when making strikes, the screws, screw or bolt.
Although the tool is the simplest applied when working with it it is important to know some important rules:
A shock screwdriver can be made with your own hands, as it does not represent any particular difficulties. If you understand from the above material, how the tool works, you can start it. For this you will need the following details:
As you can see, make a shock screwdriver with your own hands is not at all difficult, especially if you have a scheme for manufacture. Such a rollery self-makers not only facilitate life, but also allow to significantly save funds. To be able to apply various nozzles to your homemade tool, you will need to sharpen the end portion of the sleeve under the adapter or the necessary nozzles.
At the end, it remains to note that the resulting device is quite reliable and even almost eternal, since the starter details are made of tempered high-grade steel. Periodically, it is required to check the lubricant of the slots on its homemade. The price for the most inexpensive shock screwdriver is about 500 rubles. When choosing carefully, look at the completeness and quality of manufacture.
