As we all know, electric hand drill is a drilling tool powered by AC power or DC battery, and it is a kind of hand-held electric tool. It is mainly used in construction, decoration, furniture and other industries. It is used to open holes or pierce objects. Some industries are also called electric hammers. Now there are many drilling tools on the market. How can I choose a good pistol electric hand drill?

　　Today's drilling tools mainly include impact drill and electric hand drill. The impact drill is usually used to drill concrete or holes in the wall, and the power is relatively high, while the electric hand drill is usually low power, such as drilling iron or wood. The hand electric drill is almost the same as our common civil use. Because electric hand drill, drill metal, wood and plastic. It is not suitable for drilling buildings. Its structure is that a motor is decelerated with gear to increase the torque.

　　Electric drill is one of the most popular tools in hand-held electric tools. General hardware stores, from professional hypermarkets to small roadside hardware stores, have electric drills for sale. In order to purchase satisfactory electric drills, the following points should be noted.

　　1、 The electric drill product is a compulsory certification product specified by the National Certification and Accreditation Administration. Therefore, when purchasing, you should first check whether the tool has the 3C mark. The general method of checking is whether there is the 3C mark on the outer package of the tool or on the nameplate of the tool. If there is still doubt about this (because the manufacturer of the electric drill has not passed the annual supervision and review, the National Certification and Accreditation Administration suspended or revoked its certificate), you can go to the website of the National Certification and Accreditation Administration, Check whether the 3C certificate of the tool is currently valid.

　　2、 Generally, when purchasing electric drills, we should choose large companies with good reputation and influence, because these large companies have strong technical force, strict quality control and standard after-sales service. Users with strong purchasing power can also buy some tools of international brands.

　　3、 According to the needs of users, it is necessary to distinguish between home use and professional use. Since most electric drills are designed for professionals, it is necessary to distinguish professional and general home use tools before purchasing. Generally, the difference between professional tools and general household tools is in power. The professional tools have a large power to facilitate the professional to reduce the workload. The general household tools have a relatively small workload due to the small project, so the input power of the tools does not need to be large.

　　4、 Observe the outer package of the electric drill. The outer package of the tool should have clear patterns and no damage. The plastic box should be firm and the buckle for opening the plastic box should be firm and durable.

　　5、 Observe the appearance of the electric drill. The appearance of the tool should be uniform in color. The surface of the plastic parts should be free of obvious shadows, dents, scratches or bumps. The assembly misalignment between the shell parts should be ≤ 0.5mm. The aluminum casting coating should be smooth and beautiful without defects. The surface of the whole machine should be free of oil and dirt. When you hold it with your hand, you feel better and the handle of the switch should be flat. Generally, the length of cable should not be less than 2 meters.

　　6、 Check the nameplate and instructions of the electric drill. The nameplate parameters of the tool should be consistent with those on the 3C certificate. The detailed address and contact information of the manufacturer and manufacturer shall be included in the manual. There shall be traceable batch number of products on the nameplate or certificate of conformity.

　　7、 Hold the electric drill by hand, connect the power supply, frequently operate the switch by hand to make the tool start frequently, and observe whether the on-off function of the tool switch is reliable. At the same time, observe whether the television and fluorescent lamp on the scene have any abnormal phenomenon. In order to confirm whether the tool is equipped with an effective radio interference suppressor.

　　8、 The electric drill shall be powered on and operated for one minute, and it shall be held by hand during operation, and the hand shall not obviously feel any abnormal vibration. Observe the commutation spark, and its commutation spark shall not exceed grade. Generally, there shall be no obvious arc light on the surface of the commutator when viewed from the air inlet of the tool. There shall be no abnormal noise during operation

　　Correct use and purchase method of lithium electric drill

　　The electric hand drill is mainly composed of drill chuck, output shaft, gear, rotor, stator, casing, switch and cable. There are not many parts. But most lithium electric drills have poor cost performance. Baichen pistol-type electric hand drill has stepless speed change, self-adjusting reverse rotation and intelligent automatic braking function. This electric hand drill has a powerful motor with high function and a lithium battery with long standby time. It is also very stable and convenient for us to operate. I like the big advantage of it is that it can drill with infinitely variable speed at a speed that is super fast and super awesome. With its humanized pistol handle, women can also operate freely, which can reduce the user's heavy operating load without fatigue. There is a self-locking switch at the handle position, which can be locked at any time. It is convenient and safe to operate. Because of its small size, durable bearing, stepless speed regulation, positive and reverse rotation multi-function electric drill, it can completely replace the screwdriver, keyless self-locking chuck, and quickly replace the drill bit, which is light and convenient. It is a better choice in daily life.