How to remove a bit from a screwdriver
How to use the Screwdriver correctly
The screwdriver has a scale with which you can adjust the direct power of rotation. By turning the knob, you select the mode that you need depending on the work you intend to do. The same knob can be used to select the drilling mode. Just do not try to drill the screwdriver hard, concrete and stone surfaces so as not to damage it. For drilling on hard surfaces, there are specially designed tools for this. Do not switch the regulator while working with the Screwdriver. This can lead to malfunction of the instrument. Knowing how to use the Screwdriver can extend its life.
Three operating modes can be selected using a dedicated switch. Tightening mode, unscrewing mode and blocking mode Screwdriver. The third mode is for safety. All these modes are very convenient to switch if you hold the Screwdriver by the handle located above the battery. The handle is usually covered with a rubberized material and is therefore very safe to use. It ensures that the Screwdriver does NOT slip out of your hand at the most inopportune moment. For more confidence, you can fasten the screwdriver to your hand with a special strap.
How to use the battery Screwdriver
Before you start Make sure that the battery of your Screwdriver is fully charged. Insert it into the charger and pay attention to the indicator. A green light indicates that the battery is charged. The red light indicates that it needs to be charged.
In order to increase the operating time of the Screwdriver, it is enough to have a second battery. After the first is discharged and you replace it with the second, insert the first into the charger. After the battery is charged, do not keep it in the charger. This shortens the overall battery life. Also, the temperature of the room in which the Screwdriver is operating is too hot or too cold has a detrimental effect on the battery life. One battery lasts five hours.
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.
If a conventional apparatus is designed only for tightening fasteners, then a drill-screwdriver combines the functions of drilling and tightening fasteners by expanding the speed range. The smallest device. This is a cordless screwdriver. The wrench is equipped with an attachment 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 keyless chuck, and screwdrivers with Key chucks.
Power and rotation speed are important parameters of the apparatus. Power can be expressed in functional parameters. Soft and hard torque. The soft torque determines the maximum allowable load in twisting mode and the hard torque. In drilling mode. For ordinary screwdrivers, the first parameter is most important. So, at 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 screws, the speed is set to 350 rpm. If the machine is used in drill mode, the speed should be at least 1000 rpm.
When choosing a cordless screwdriver, you should consider some of the characteristics of batteries. Modern imported devices are most often equipped with lithium-ion cells. Such batteries have a number of advantages, including. Sufficiently long service life. However, they tend to self-discharge, i.e. Discharged during storage. Screwdrivers with this battery are great when used frequently. If they are rarely operated, 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 from the mains.
When choosing an expensive high-quality screwdriver, you should pay attention to the additional functions that will expand the capabilities of the device. These include:
- Introduction to the design of the impact mechanism, which will help when unscrewing the socket heads;
- Providing an impulse to increase the torque, which is useful when drowning the screw head;
- 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.
How to work Screwdriver
After completing all the settings, you can start using the power tool. Having studied the operating instructions of the screwdriver, you can prevent Possible malfunctions during handling the device, thereby increasing the service life of the tool.
It is NOT allowed to adjust the frequency and direction of rotation of the nozzle when the device is turned on. Do not touch grounded objects with the power tool, otherwise a person may get an electric shock. Do not use the device for a long time, as it may burn out.
The room in which it is best to use the screwdriver should be well lit and the power supply. Constant, without surges, this will avoid equipment malfunctions. Work should take place in specialized clothing and only with serviceable tools.
Work rules
Working with a screwdriver is not difficult. In the lips of the chuck, the nozzle needed for work is clamped (“bit”, either a wrench, or a drill), and, with some effort pressing the screwdriver, pressing the button rotates the chuck. If you need to unscrew the self-tapping screw or take out the drill, the “reverse” is cut in. During work, several rules should be observed:
- Before working with a screwdriver, fully charge it. With all this, strictly observe the requirements of the annotation in the charging time. “Overexposure” of the battery in the charger reduces its service life.
- When working correctly select the “screwing” or “drilling” mode. This is how you protect the motor and gearbox of the screwdriver from damage.
Remember that screwdrivers are not designed for drilling in stone, in other words concrete.
How to change a drill bit in a drill. Getting by without help!
The drill can not always be removed from the chuck in the usual way. As a result of heavy loading or improper fixation, it can jam the cartridge. How to get the drill out of the drill without damaging the fasteners and tools? First of all, try to cool the cartridge well. Sometimes this is already enough for the cams to release the drill a little, and you could pull it out.
The most proven method for removing a jammed tool is to tap the cams. For this, the free end of the drill is fixed in a vice, a wooden bar is applied to the chuck, through which tapping is carried out. This vibration of the chuck can weaken the grip and release the tool. This method is useful both for owners of classic fasteners and for owners of quick-release fasteners. Extraction is sometimes possible after lubricating the drill with machine oil or the popular WD-40 grease.
The latter method is better, because the sprayer will quickly reach the desired points of contact between the drill and the chuck. In any case, after lubrication, you will need to wait a bit for the substance to penetrate deeper. Sometimes, in especially difficult cases, the problem is solved only after dipping the entire cartridge in machine oil or vegetable oil. If neither one nor the other is at hand, you can make a “bath” of your drill and gasoline. Keep the cartridge in liquid for at least an hour. Combining methods will help you remove a jammed drill even faster.
Drill device. What you need to know about the tool?
A jamming of a drill in a drill or screwdriver chuck has occurred at least once with every tool owner. To understand why this can happen, you need to understand how the drill works. This tool converts electrical energy into mechanical energy, which is possible thanks to an electric motor that rotates the shaft. Through the gearbox and gears, rotation is transmitted to the fasteners, in which the drill is fixed.
Now let’s consider the operation of an electric drill from the back side, provided that the drill was not secured correctly or not firmly enough. Vibrations that occur during operation will lead to deviations in the direction of drilling, as a result you will get a curved hole. The vibrations from the vibration will be transmitted to the gears and the gearbox, engaging the shaft and the engine itself. This does not immediately threaten to breakage, however, a decrease in the service life of the tool is guaranteed! Often, carelessness in securing the drill leads to jamming. Sometimes jamming occurs as a result of the drill slipping away from the drilling point. To avoid this, use a spring center punch to make grooves in the surface for the drill.
In addition to jamming, a loosely fixed drill can jump out of the fastener, and this is already fraught with severe enough injuries for the person working with the tool and those around him, taking the speed of revolutions of modern devices. Therefore, never fasten the drill in a hurry, always disconnect the drill from the current in order to avoid accidentally starting the drill.
How to change a drill bit in a drill. Proven methods!
What repairs would cost without a good drill and drill set! However, even the most reliable tool can jam during operation. Don’t panic! We will teach you how to change a drill in a drill and correctly diagnose other breakdowns.
Fastening device. Non-combat cartridge
The chuck is the fastener in which the drill is fixed. The fasteners themselves are screwed onto the tool spindle. Most often, drills are equipped with a jaw chuck. This design is a floor cylinder with metal “fingers” inside. When turning the adjusting ring, which is located outside the unit, the “fingers” converge or diverge along the inner cone-shaped surface. In such a “fist” you can clamp both a drill with a cylindrical shank and a hex.
Convenience and ease of use have ensured the popularity of the cam mechanism. However, it is NOT only disadvantages. One of them. These are the difficulties in working with small drills. A short product can simply fall inside. You can still fix it, put the drill in a horizontal position, but you cannot press on it strongly during work. If another drill was inserted into the drill, you can remove it by turning the adjusting ring in the appropriate direction. It is not always possible to do this manually, for this there is a special key, which acts like a lever, increasing the effort. By the way, tightening the drill without a key is also not recommended. The larger the drill diameter, the more reliable the fastening should be.
Quick-release fasteners work. The second most popular. Possible without a key. It is enough to insert the drill and turn the lever, often it can be done with one hand. The fixation of the drill, which is provided by this type of chuck, is quite enough for most jobs, however, in comparison with the classic version of fastening, it is inferior in reliability, and it is more expensive. The main advantage of the quick-release fastening. Speed of drill change and process safety, since such a chuck is devoid of teeth that can injure hands. No dedicated key. Also a weighty dignity! Seasoned builders know how easily it gets lost, so very often you can see the key tied with tape or electrical tape to the wire.
True, this does not add convenience, but there is at least some confidence that the key will not have to be looked for throughout the construction site. How to change a drill in a screwdriver? The scheme is absolutely identical. Most drill chucks are similar to screwdriver fasteners. Of course, the last tool cannot be a full-fledged replacement for a high-quality drill, if only because fasteners are not provided for drills with a large diameter, and the revolutions in a screwdriver are usually less.
How to replace the cartridge. Updates drill
Most often, the cartridge is the first to become unusable in the drill. Dismantling it at home is not easy, but possible! The fasteners are screwed onto one spindle, but in addition it is also secured with a bolt with a left-hand thread. In order to get it, you need to completely unclamp the cartridge. It is inside. The whole difficulty of unscrewing it lies in the fact that many do not know about the left-hand thread, and trying to unscrew it, tighten it even more, tear off the hat and, in total, carry it to the service.
By unscrewing the bolt, you can Unscrew the cartridge itself, however, and this is not so easy to do. Some models have a wrench notch at the base of the threads. In this case, you will be able to fix the spindle and unscrew the fasteners, applying a lot of effort. The real difficulty arises when there are wrench cuts. You will have to remove the housing cover to fix the spindle inside the drill. Difficult but doable.
Remove the cartridge. It’s one thing. Pick up a new one. Completely different. In addition to the methods of clamping the drill, which are described above, different chucks also have different threads! The surest way NOT to confuse anything. Take an old cartridge with you and show it to the seller, or how to choose the right one according to the layout. When you have coped with this task, all that remains for you is to screw up the spindle chuck and tighten the bolt, which in our case is twisted counterclockwise.