In repair, construction, in everyday life, it is difficult to do without a drill. Assembly of furniture, hanging paintings and shelves, installing various fasteners for wall household appliances – these are far from all tasks that require the presence of a drill. A drill is a drill, clamped in a cartridge rotating with a manual or electric drive. The first hand drill arose in ancient times, when people tried to carve fire from stone with the help of the rotation of a special primitive drill by means of turning onions. The first electric drills appeared in 1895 in Germany. The entire power tool, including drills, is divided into household and professional. Household tool. It costs inexpensive, weighs less, compact and convenient in work and transportation, but you can work for it for about 4 hours a day. Has a lower power and number of revolutions than professional. Produced in Malaysia and China. Professional tool. Focused on a large daily many hours of work, therefore it differs more power, more reliable in work. Has more weight and size. Produced by solid companies – for example, a German company. By type of power supply, the drill can be divided into battery and from the network. The former is convenient to use where there is no electricity. The second are more powerful. By the method of exposure, distant and unstressed drills are distinguished. In addition to the usual movement of the drill around its axis, in drums it also makes progressive movements ahead. Thanks to this, you can drill holes even in concrete, as well as wrap and turn screws and screws. But for a tree, it is better to apply an unstressed drill to prevent the splitting of the material. In shock drones there is also the function of turning off the impact. They are universal, but are more expensive. By the method of clip of drill drills are divided into: 1) traditional, gear cartridge. Fixed with the key. 2) fast -sounding cartridge. One hand is enough – and the drill in the cartridge. 3) Canging SDS-Patron. Of the other types of drills, the corner ones were noted – to work in hard -to -reach places when, for example, you need to drill a hole at an angle – for example, under the hood of a car. 2) Mixers drills – in addition to ordinary functions, are adapted for stirring paint, gypsum, cement mortar. 3) Drill -shurupert – for wrapping screws and screws. Indispensable when assembling furniture, in everyday life. 4) punch – the main function of the operation of the blow, not the drilling. Suitable for grooves, recesses, openings.
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