How To Work With A Screwdriver

How to use a drill-screwdriver Information portal about suburban construction. Only up-to-date information about real estate, installation schemes, description of materials, comparative analysis of technologies, do-it-yourself crafts. It is useful for every owner of his own house or cottage.

Battery Charging Procedure

It is necessary to insert the battery into the device, observing the polarity (the corresponding signs and – are affixed both on the battery and on the device), i.E. Plus is combined with plus, and minus with minus.

A glowing red diode on the device panel indicates that the charging process is in progress. This procedure lasts from 3 to 5 hours.

While recharging, the battery and the device itself may heat up, which is not an indication of a malfunction.

Chuck rotation direction

In the construction of the drill. The screwdriver has a push-type switch with which you can change the direction of rotation of the chuck for tightening or unscrewing the fasteners.

There is a direction mark on either side of the tool next to this switch. By pressing the switch, you can reverse.

It must be remembered that the direction of rotation can be changed only when the electric motor is completely stopped.

The drill chuck can be replaced if necessary. It must be borne in mind that it is fixed with a screw with a left-hand thread and therefore it must be unscrewed clockwise.

This screw can be accessed through the front of the chuck.

The tool kit also includes a set of drills of different diameters. They are all designed to work in relatively soft materials.

The drills are clamped in the chuck in the same way as the bit attachment. (See photo above)

Freezing of the battery is not allowed.

Bits. Nozzles

The screwdriver comes with several types of bits with different shapes of the working edge.

Bits with a straight edge are designed to work with fasteners that have one slot (slot). A suitable bit is selected depending on its length and depth.

Similarly, the shape of the cross-shaped bit is selected here, the width of the slot and the dimensions of the fastener head itself are taken into account. For reliable operation, the edge of the bit must fit tightly into the splines, otherwise there is a possibility of licking the edges of the splines.

To attach the bit to the chuck, a special attachment with a magnetized holder is used, which prevents the structure from disintegrating and reliably holds the bit in a variety of positions.

To fix the bit with the bat, you need to unscrew the movable part of the chuck.

Insert the nozzle and screw in the cartridge until it stops.

There are also very convenient double-sided bits that can be fixed in the chuck without a nozzle.

How to use a screwdriver: instructions for beginners

Screwdriver is a tool with which you can quickly screw in fasteners (screws, self-tapping screws, screws); It is used to assemble furniture, hang shelves, drill holes, and install a suspended ceiling or batten. To understand how to use a screwdriver correctly, it is worth learning more about how it works, what work can be done with it.

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Screwing and tightening fasteners

Instructions for using the device are simple:

  1. The tip of the nozzle is inserted into the slot of a self-tapping screw or screw, the device is turned on.
  2. To increase or decrease the twisting speed, increase or decrease the pressure on the start button.
  3. When the self-tapping screw is tightened, the force limiting mechanism will automatically work, after which the work will stop.
  4. To unscrew the screw, the nozzle is placed in the slot, after setting the lever for the direction of rotation of the nozzle in the opposite direction.

Design

The tool consists of a housing containing a motor and a gear mechanism; chuck (clamp for replaceable drills); battery or cord to connect the device to the mains.

How to use a screwdriver for beginners on a note

How to use a screwdriver sometimes an indispensable device in the economy and construction? It is a hand-held electric tool designed for loosening and tightening screws, screws or other types of similar products. We’ll talk about working with him below.

How to work with a screwdriver setup stage

The design of the screwdriver is quite simple. The plastic housing holds the motor and gears that drive the bit. The bit is located at the end of the device. On the case there is also a diode illumination, switches for speed and direction of movement, a tightening torque regulator, a toggle switch.

The principle of operation of the screwdriver is also very simple. With the help of a motor, a shaft with a chuck is driven through a gearbox, in which the necessary nozzle is fixed. Now that you have learned how a screwdriver works, you can learn how to use it. First you need to provide a safe working environment. It is also advisable to check if the battery is well charged. If everything is in order, then you can get to work.

Before working with a screwdriver, you must insert the desired attachment into it. It is selected in accordance with the size of the head of the self-tapping screw or screw. To do this, remove the cartridge and sleeve from the device and insert the bit into the magnetic holder, which is then reinserted into the device and fixed in it.

The bit speed can now be adjusted. For this, a special regulator is provided on the device. It is advisable to carry out this stage before you started using the tool. To know how to work with a screwdriver correctly, you must first figure out how to change the direction of rotation of the spindle, for which there is also a switch.

The design of the screwdriver briefly about the tool diagram

The presented tool can be networked and cordless, and according to the type of work, a drill-screwdriver, a cordless screwdriver, a wrench and a screwdriver are distinguished. All of these tools work in the same way, but perform different functions.

If a conventional screwdriver works only with fasteners, then a drill driver can also drill holes. The wrench is designed for loosening or tightening bolts and nuts. The cordless screwdriver has a Phillips bit. In terms of power, this device is weak.

It is quite difficult to work without the presented tool, especially if you have to tighten a large number of self-tapping screws. Arrangement of a false ceiling, fastening insulation or drywall to the surface and many other actions is what a screwdriver is for.

Choice of screwdrivers

Modern screwdriver designs have several modifications, determined by the purpose. The following main types of devices can be distinguished:

  • Screwdriver:
  • Drill screwdriver;
  • Wrench;
  • Cordless screwdriver.
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If a conventional device is designed only for tightening fasteners, then a drill-driver combines the functions of drilling and tightening fasteners by expanding the speed range. The smallest device is a cordless screwdriver. The wrench is equipped with a nozzle for tightening nuts and other hexagons.

By the type of power supply, screwdrivers can be divided into batteries and mains powered. Cordless devices have a great advantage in terms of mobility. They are usually equipped with nickel-cadmium and lithium-ion cells. By the drill fastening mechanism, one can distinguish screwdrivers with a keyless chuck, and screwdrivers with key chucks.

Power and rotation speed are important parameters of the apparatus. Power can be expressed in soft and hard torque functional parameters. The soft torque determines the maximum permissible load in the tightening mode and the hard torque in the drilling mode. For ordinary screwdrivers, the first parameter is most important. So, with a torque of 30 Nm, the length of the screw to be screwed is limited to 70 mm, and at 40 Nm it increases to 100 mm, etc.

The rotation speed determines the purpose of the apparatus. When using it only in the mode of twisting or unscrewing the screws, the speed is set to 350 rpm. If the machine is used in drill mode, the speed should be at least 1000 rpm.

Removable battery device diagram.

When choosing cordless screwdrivers, you should consider some of the characteristics of batteries. Modern imported devices are usually equipped with lithium-ion cells. Such batteries have a number of advantages, incl. Sufficiently long service life. However, they tend to self-discharge, i.E. Discharged during storage. Screwdrivers with these batteries are great when used frequently. If they are rarely operated, then it is advisable to use devices with nickel-cadmium elements, which are less susceptible to self-discharge and are much cheaper. Any batteries must be selected according to their capacity. The higher this indicator, the better the element is. If the screwdrivers will be used at home, where there is access to sockets, then it is better to choose a device powered by the mains.

When choosing an expensive high-quality screwdriver, you should pay attention to additional functions that will expand the capabilities of the device. These include:

  • Introduction to the design of the percussion mechanism, which will help when unscrewing the socket heads;
  • Providing an impulse to increase the torque, which is useful when drowning the screw head;
  • The possibility of increasing the rotation speed up to 1000 rpm;
  • Illumination of the working area.

When choosing a cheap, but sufficient screwdriver for home conditions, you can choose a device with a torque of 30-35 Nm and a mains supply or with a nickel-cadmium battery with a capacity of about 2 A / h.

The work of the screwdriver in the tightening mode

Diagram of installing a bit in a screwdriver.

Before starting work, it is necessary to select the desired nozzle (drill) according to the size of the screw head and the shape of the slots (straight or cross). The nozzle is installed in the center between the set cams and is fixed in the chuck by rotating the sleeve clockwise by hand. If a key type chuck is installed, the key is inserted into the socket on the chuck and rotated clockwise until the attachment is secured.

The tip of the nozzle is placed in the slot of the screw, the start button is pressed.

By increasing the pressure of the finger on the trigger, the optimum tightening speed is achieved. When the screw is fully screwed in, the force limiting mechanism is triggered and the drill stops. The finger is removed from the button. The screw tightening process is complete. Unscrewing the screw is done in the same way, but with the direction lever in the opposite position. The optimal value of the torque (power) when screwing the screw into hard and durable materials is established by rotating the torque regulator ring, on which graduations are applied corresponding to different powers.

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Screwdriver design

All types of drills are of the same type, including:

Diagram of a cordless screwdriver.

  • Split case;
  • Drill chuck;
  • Electrical and mechanical part.

The chuck is used to install the drill and connect it to the rotating shaft. It contains 3-4 jaws, between which the drill is placed. The cams move by rotating the adjusting sleeve. Anchoring, i.E. Reduction of the cams is done by turning the sleeve by hand or using a special key.

The electrical part consists of an electric motor, starting systems, reverse direction of rotation and engine speed control, as well as a power cord or battery. A collector single-phase electric motor is used as source of motion. A starting capacitor is installed to start the engine. The power supply to the motor is carried out through contact brushes fixed in the holders.

The switch is usually designed as a start button. It is combined with an engine speed governor. The control circuit based on the transistor is made in such a way that when the start button is pressed more strongly, the rotation speed of the motor armature increases.

Diagram of the gearbox of the cordless screwdriver.

The direction of rotation of the armature is reversed by changing the polarity at the input terminals. The reverse lever is brought out to the body of the device.

The mechanical part of the screwdriver includes a gearbox, bearings and a force limiting mechanism. The gearbox provides the transmission of the rotational motion of the armature shaft to the main shaft, on which the chuck with the drill is mounted. The planetary gearbox contains a system of gears, satellites and carriers. The number of speed control steps depends on the number of satellites.

The force limiting mechanism is designed to optimize the load on the screw during tightening. When the screw is fully tightened, the resistance to rotation of the drill increases and the mechanism stops its movement. In total, the mechanism can have up to 16 positions of force adjustment.

The design of the screwdriver briefly about the tool diagram

The presented tool can be networked and cordless, and according to the type of work, a drill-screwdriver, a cordless screwdriver, a wrench and a screwdriver are distinguished. All of these tools work in the same way, but perform different functions.

If a conventional screwdriver works only with fasteners, then a drill driver can also drill holes. The wrench is designed for loosening or tightening bolts and nuts. The cordless screwdriver has a Phillips bit. In terms of power, this device is weak.

It is quite difficult to work without the presented tool, especially if you have to tighten a large number of self-tapping screws. Arrangement of a false ceiling, fastening insulation or drywall to the surface and many other actions is what a screwdriver is for.