What is attractive for a modern hand tool? Of course, a variety of convenient forms and adaptations. A home-based craftsman always has a lot of screwdrivers, because for any kind of mounting or electrical work your tool is needed. However, it is necessary to be able to choose screwdrivers on your own.
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Assistant home master
The main assistant of the home master can be called with full confidence screwdrivers. Without the direct participation of such a hand-held metalwork tool, it is impossible to screw or unscrew fasteners.
What type of screwdriver is necessary for the successful conduct of assembly or fixing works in the apartment and how to choose a screwdriver? We can not hide that the whole secret lies in the design of screwdrivers, the types of splines and the material of the tool making.
Screwdriver construction
The simplest design of the screwdriver is a metal rod with a tip. On the opposite end of the tip there is a handle. The handle of the screwdriver can be plastic, wooden or rubber with corrugated pads or without them.
The material of the handle and its shape must be selected in accordance with the adhesiveness of the hand. The diameter of the handle of the screwdriver in most cases has a streamlined shape and has dimensions from 10 mm. According to the kinematics of torque, the relationship between the torque and the diameter of the handle is straight.
In practice, this means that the larger the size of the part or the fastener, the greater the diameter of the handle of the screwdriver and the slot. Therefore screwdrivers for small parts have small thin handles. To strengthen the torque for some handles, arrange a hole in the handle, which can be used to create a kind of lever.
How to choose a screwdriver will prompt the proposed video.
Types of Screwdriver Slots
The slot of any screwdriver is the main element of the tool.
The shape of the screwdriver tip can be in the following form:
• Straight slot
• Cross-shaped
• Hexagon
• Six-beam star-shaped.
Slotted screwdriver has the most primitive type of slot - straight.
The working end of a slotted screwdriver is a wedge-shaped plate. Slots straight can have different depth and width (from 2 to 18 mm). Marking of slotted screwdrivers SL.
crosshead screwdriver (cross-shaped) is the holder of the Phillips slot. The Phillips slot is a self-pushing cross-shaped view. An improved version of the slot is the Pozidriv type. The depth of the cross-slot can be up to 4 mm.
Marking of Phillips screwdrivers PH and PZ.
A screwdriver with a hexagonal or six-beam star-shaped slot can not be confused with anything. The screwdriver with a six-beam star (TORX) is marked with a SW and is widely used.
An indispensable tool for the home master is a percussion screwdriver.
Types of Screwdrivers
impact screwdriver
The design of the screwdriver shock is more powerful than the traditional screwdriver slotted. The reinforced steel case, which is larger in size than a conventional screwdriver, is equipped with a device for installing flat and cross bits.
A screwdriver with bits can be supplied from two to six. The holder is installed in the traditional clamping method. The principle of operation of the screwdriver is based on a short-term impact of the bit, which causes a subsequent rotation of the fastening element. Such a problem can arise at the initial stage of the process of unscrewing the fastener element.
In this case, the reversing screwdriver is irreplaceable. If you put a reverse on the screwdriver, you need to insert a bit, fit in size, into the holder and put the bit on the bolt. Then you need to use a hammer, tapping on the bit, try to move the problem bolt.
Beat bits on the element allows you to move the jammed or bolted bolt to the decisive 1-3 mm. After that, you can successfully use an ordinary screwdriver to unscrew.
indicator screwdriver
The most popular tool for a home electrician is an indicator screwdriver. The indicator screwdriver can be distinguished by a characteristic transparent case, in which a neon light bulb is built in a tiny size.
When the screwdriver is touched to the conductor under the active voltage, the lamp lights up and signals the presence of voltage. Indicator screwdriver or phase determiner is quite simple, but such a necessary screwdriver design.
screwdriver, rechargeable
A cordless screwdriver can be called the most convenient when twisting and unscrewing fasteners of small size. Structurally, the battery screwdriver is a housing made of impact-resistant plastic with an electric motor and a special adapter for setting bits. Most screwdriver models of this type work with a battery cell.
The main thing when choosing a battery screwdriver is to draw on the shape of the handle. There are the following types of handles of battery screwdrivers:
• direct
• T-shaped
• L-shaped.
The handles of the screwdrivers are handy in grip, compact and manoeuvrable enough. Therefore, the model should be selected according to the following parameters:
• Torque of the tool
• rotational speed
• type of battery cell
• Power.
The maximum torque of the tool in the models of a battery screwdriver can reach 15 Nm. Therefore, using a screwdriver of this type, it is possible to twist even the tightest screws.
The best variant of the battery screwdriver can be considered a model with a set of bits, with a magnetic extension - holder, as well as square adapters and hex head. A reliable plastic case - and now you already have a battery screwdriver of excellent quality.
Choosing a screwdriver, I always want them to be multifarious and multifunctional, always in one place. Successfully solve the problem by purchasing a universal screwdriver set. Any set of screwdrivers has the strength of the material of manufacture. Particularly impressive is the work with screwdrivers having magnetized heads.
This allows you to carry out the necessary installation or electrical work in hard-to-reach places. And what else is necessary for fruitful work of a real home Master.
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