Hand power tools formed on the marketthe most demanded segment. In many respects it is connected with the increase of operational qualities and the expansion of the functional of this equipment. A vivid example of the performance of a multifunctional tool of this type is a drill-screwdriver. The reviews are characterized by such devices as convenient, high-performance and reliable. However, these properties are far from all models, so you should approach the choice of this device with knowledge of the intricacies of its device, operation and maintenance.
The technical filling is hidden under the body,made of high-strength plastic - sometimes with elements of rubberized linings and metal inserts. The power base is formed by an electric motor, gearbox and communication nodes that operate the snap-in with a clamping chuck. Immediately it should be noted that today models are still being produced, equipped with carbon brushes. This is a consumable consumable, but it is required to maintain optimum motor performance. Nevertheless, the design of the latest modifications free of brushes, which simplifies the operation of the device. At the same time, the device drill-screwdriver is not complete without a gearbox. A detailed examination of the designs of different models can be seen that this element is made of plastic or metal. To give preference to a particular material should be based on the nature of the tool. For heavy, regular and high-performance work, a model with a metal gearbox is required, however, for infrequent household use, it can be quite limited to plastic wear-resistant components at the base of the tool.
Almost all major manufacturersMultifunctional drills contain at least several battery models in the range. Moreover, there is already a clear tendency to the total displacement of network devices. But immediately ignore this class is still not worth it. The traditional network concept of power supply is beneficial in that it allows minimizing the mass of the instrument by eliminating the battery pack and also implies higher power. In turn, modern batteries for a drill-screwdriver provide the ability to operate the tool at a distance from the outlet for several hours. The sets often provide for the presence of two battery packs, so you can count on the alternate operation of energy sources in continuous mode, if in principle there will be access to the network at the facility. Actually, regardless of the direct connection to the outlet, the main advantage of such models lies.
Выбор между аккумуляторными аппаратами охватывает Ni-Cd NiCd, Ni-MH NiMH and Li-Ion Li-Ion batteries. All three elements in different models and modifications are supplied with a drill-screwdriver. Reviews of Ni-Cd batteries indicate stable operation in extreme temperature conditions, a large number of energy replenishment cycles and low cost. But such batteries are also distinguished by their large size and memory effect, which does not allow charging the device until its energy is completely depleted.
Ni-MH batteries benefit from low mass andenvironmental friendliness. They work for a long time without recharging and have no memory effect. However, for work at sub-zero temperatures, they cannot be used - the charge is exhausted regardless of the workload. The best option is considered to be a lithium-ion battery. It can be charged without waiting for full discharge, and not be afraid of self-discharge during long storage. The working qualities provided by the combination of a Li-Ion and a drill / screwdriver are also emphasized. Reviews indicate high performance with a small mass. Manufacturers produce a compact tool with such batteries, which at the same time can compete with network counterparts in terms of power. Among the shortcomings of this power source can be identified sensitivity to cold and high cost.
Power tools is the mainworking parameter. In the case of battery models, this indicator is expressed by voltage - the total range represents devices from 5 to 36 V. The average segment offers models at 14-18 V. At the level of 24 V, there is already a cordless percussion drill-driver with a higher rotational speed and providing the possibility of providing a destructive jerky action. The possibilities of working with materials of different types are also determined by the torque. In household models, it is 15-20 Nm, and professional devices have a size of 130 Nm. The middle class of semi-professional devices has a torque of 50-70 Nm. What do all these mean? The lower this characteristic, the softer the target material will be. The same 15 Nm will allow to drill wood, and 80 Nm will open opportunities for working with solid metals.
Операции сверления поверхностей и закручивания Hardware can be made in different conditions, sometimes requiring the connection of auxiliary accessories and accessories. Manufacturers are trying to save users from unnecessary manipulations with individual additions and provide assistance options directly in the model. So, among the common additions you can highlight the presence of LED backlight, the integration of the second handle, the laser beam for positioning the working equipment, the keyless chuck, etc. In addition, you should consider the functional additions - especially for home use, the soft start option, reverse stroke, indicators are useful. battery charge, etc. Of course, it’s unlikely that it’s possible to provide the whole option in one device, but it’s still worthwhile to get an idea of the most suitable functions. This will allow you to select the optimal drill screwdriver. A review of the manufacturers listed below will also allow you to get closer to choosing a suitable unit.
One of the largest manufacturerspower tools, in the family of which you can always find a suitable version of the drill-screwdriver. Among the fans of this brand are many professional craftsmen and home users. Both categories of owners of the German instrument note its structural reliability, broad functionality and performance. There is a variety of models. The Bosch product range also includes a 36 V shock drilled cordless drill driver and a low-power device like the IXO V basic, which only has a voltage of 3.6 V. With regard to the optional, the company’s developers consistently provide products with integrated LED backlighting , automatic spindle lock and other functions.
Bosch direct competitor who also askedhigh bar for a variety of technical and operational parameters. Experienced users of Japanese-made models emphasize the special approach of developers. On the one hand, the tool is praised for adherence to the traditional concept of an optimized design, and on the other hand, many note the steady adherence to fashion for new technologies. But the main advantage nevertheless lies in the design innovations that the Japanese drill-screwdriver acquires. Reviews, for example, especially highlight a large number of speeds, more than 10 steps to set the torque and the constant improvement of the working tool clamping mechanism.
Another German brand that, although notIt is widely known as Bosch, but is well known in the power tool segment. The drills with the Metabo screwdriver feature are renowned for their modest size, durable technical base, durable consumables and flexibility in use. The company mainly focuses on the household segment, but with the seizure of the professional sphere. For example, a typical 18 Volt drill driver, according to the owners, copes with almost all types of hardware and has no restrictions on drilling material.
In the market of construction tools exista whole layer of so-called secondary manufacturers, which are generally inferior to Makita or Bosch companies in quality. However, there are exceptions, which include the firm Patriot, offering high-quality, functional and reliable devices. The practice of using the tools of this company fully confirms the listed characteristics, and some owners point out the affordable price - also a logical advantage over the first-line brands. Nevertheless, a Patriot drill screwdriver is recommended rather for domestic use. The degree of endurance and performance that is required in professional construction is still not available to the main part of the Patriot models.
Based on the feedback on specific models and the overall practice of using drill-screwdrivers from leading manufacturers, the following rating can be made:
Recommended before using the toolcheck its integrity, quality of fastenings, reliability of installation of equipment and electrical wiring. If a battery pack is used, you need to check its charge level. Next, the device is configured for a specific work format. The selection of specific parameters is determined by the material with which the specific drill-screwdriver will deal. The instruction for most models of this type recommends using drills with a guide end for working with wood, which will allow the cutter to hold the workpiece at the desired angle. As for the metal, the main problem in working with it is the drill slip at the first approach. To facilitate this stage will help the core point, which should be located hole.
After each working session the tool followsclean shavings and sawdust. All niches and openings should be purged, eliminating the risk of clogging of critical parts of the structure. Without fail, the apparatus should be lubricated with special solutions. If you plan to use a drill-screwdriver for the house not in a permanent mode, but from repair to repair, then you can limit yourself to a typical anti-friction lubricant. In other cases, it is desirable to purchase specialized formulations for gearboxes and bearing groups.
The presence of a drill-screwdriver has long beenneed in the household, and in the field of professional construction without it does not do any full-scale project. Another thing is that different areas impose their operational requirements on the tool. For everyday tasks, for example, the possibilities available to the Patriot drill driver or the machines of domestic firms Interskol and Zubr will be enough. However, for complex and demanding professional-level operations, you cannot do without the powerful shock models Metabo, Makita, Bosch, etc. Although the nominal characteristics of the representatives of the two categories may be similar, long-term operation reveals significant differences between them in terms of technical endurance, durability and stability maintain workflow.
