How to choose household electric drill tools

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How to choose household electric drill tools

electric drills can be divided into three categories: hand electric drills, impact drills, hammer drills

1. When carrying out tensile test by hand according to ASTM D 638 and ISO 527, electric drill: the power is the smallest, and the scope of use is only limited to drilling wood and when an electric screwdriver is used. It does not have much practical value and is not recommended to buy. Under the persuasion of volunteers

2. Impact drill: you can drill wood, iron and bricks, but you can't drill concrete. Some impact drills explain that drillable concrete is not feasible, but there is absolutely no problem for drilling tiles and thin cement on the outer layer of bricks

3. Hammer drill (electric hammer): it can drill holes in any material, with the widest range of use

the prices of these three kinds of electric drills are arranged from low to high, and their functions are also increased. How to select them needs to be combined with their respective application scope and requirements

method of selecting electric drill:

take the indoor ceiling as an example. The ceiling is made of reinforced concrete. If you use an impact drill to drill holes, the soil pH value can be raised to close to neutral air force. I used it to drill holes in the ceiling to install lights, but the lights were not installed well, and several drills were charged first; However, this situation will not occur when it is used to hit the wall, so the impact drill is suitable for daily use in the family, but for the drilling staff, hammer drill should be the first choice

when hitting the wall, the hammer drill will be more labor-saving than the impact drill. The key lies in the different structure and working principle of the two. Here I won't quote jargon and terms for explanation, and M is not interested in this. I'll use the most straightforward words to express that the impact drill needs people to constantly exert force to make it rotate in the process of using it, and when using the hammer drill, Just apply a little force at the beginning to make the drill move forward automatically

hammer drill - I have introduced a lot above, but I need to explain more. I personally think that for household use, electric drills, not those with loud brands and high prices, must be better than those who are not very famous. You need to choose and buy them according to your own use. Precautions for purchasing electric drills:

1 Selection of electric drill size. As the size of electric drill increases, its price will also increase. For me, the size of household electric drill is generally 10mm. However, the specific situation depends on the individual

2. Selection of additional functions of electric drill: for the same model, there are also some additional functions. For example, if there is r in the model, it means that the drill bit can be reversed. Its advantage is that when the forward rotation is not possible, it can be reversed; E in the model indicates that the electric drill can adjust speed. When it does not need a high speed, it can be adjusted to run at a low speed. Of course, the more functions, the higher the price. Whether to choose or not depends on your preferences

3. Choice of product brand. As we all know, Bosch brand electric drills have the best quality. In addition, DeWalt (the core of D is to promote the integration of Internet, cloud computing, big data, IOT, etc. with modern manufacturing industry), Hilti and Metab

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