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Classification of electric drills
Time:
2024-09-06
Electric drills can be divided into three categories: handheld drills
Electric drills can be divided into three categories: handheld drills, impact drills, and hammer drills.
1. Handheld electric drill: The power is the smallest, and its use is limited to drilling wood and as an electric screwdriver. Some handheld electric drills can be converted into specialized tools according to their purpose, and there are many uses and models available
2. Impact drill: There are two types of impact mechanisms for impact drills: dog tooth and ball bearing. The ball type impact drill consists of a moving disc, a fixed disc, steel balls, etc. The rotor is connected to the spindle through threads and has 12 steel balls; The fixed plate is fixed on the casing with pins and has 4 steel balls. Under the action of thrust, 12 steel balls roll along the 4 steel balls, causing the hard alloy drill bit to produce rotational impact motion, which can drill holes in brittle materials such as bricks, blocks, and concrete. Remove the overhead pin, allowing the fixed disc to rotate together with the moving disc without producing any impact, and can be used as a regular electric drill.
3. Hammer drill (electric hammer): It can drill holes in various hard materials and has the widest range of applications.
The prices of these three types of electric drills are arranged from low to high, and their functions also increase accordingly. The selection needs to be based on their respective applicability and requirements.
The difference between electric drills, impact drills, hammer drills, and pickaxes
A handheld electric drill simply relies on a motor to drive the transmission gear and increase the rotational force of the drill bit, allowing it to scrape through materials such as metal and wood.
There is an adjustment knob at the drill bit clamp during the operation of the impact drill, which can be used in two ways: adjustable drill and impact drill. However, the impact drill utilizes the mutual jumping of gears on the inner shaft to achieve the impact effect, and the impact force is far less than that of an electric hammer. It can also drill reinforced concrete, but the effect is not satisfactory.
Hammer drill (electric hammer) is different. It uses a bottom motor to drive two sets of gear structures, one to drill and the other to drive the piston, like the hydraulic stroke of an engine, generating a strong impact force that accompanies the drilling effect. Strength can split stones into gold.
Electric pickaxe is a device that uses a motor to drive a swinging weight to bounce and produce a chiseling effect on the ground. The hydraulic pump pick uses the gas pressure transmitted by the air compressor to drive the pump hammer in the electric pick to bounce back and forth, thereby producing the effect of the pick chiseling the ground. However, the electric pick only chisels, and its pick does not rotate.
In summary, electric drills can only drill, while impact drills can also have a slight hammering effect. Hammer drills can drill with higher hammer strikes, while electric pickaxes only do hammer strikes and cannot drill.
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