First, the introduction of hand drill
1895, the first DC hand drill was manufactured by the German company. The shell is made of cast iron, and 4 mm holes can be drilled in the steel plate. Hand drill is a portable small drilling tool, which consists of a small motor, a control switch, a drill chuck and a drill bit.
Hand electric drill is a hand-held electric tool, which is powered by AC power supply or DC battery.
Hand electric drill is the largest selling product in power tool industry, which is widely used in construction, decoration, pan-furniture and other industries. They are used to make holes or pierce objects, and some industries are also called electric hammers.
The main components of hand electric drill are drill chuck, output shaft, gear, rotor, stator, shell, switch and cable.
Hand drill (pistol drill) is a tool for drilling holes in metal materials, wood, plastic and so on. When equipped with positive and negative switches and electronic speed regulating devices, it can be used as an electric screwdriver. Some models are equipped with rechargeable batteries, which can work normally for a certain period of time without external power supply.
Special model: right-angle electric drill-suitable for narrow working space. The head of the electric drill is 90 degrees from the fuselage, so the required working space is reduced. )
Second, the hand drill brand
1, overtone FEIN( 1867 started in Germany, a world brand, a founding manufacturer of global power tools, an industry influence brand, and a German overtone power tool group).
German overtones are quite famous in the professional power tool market. The company is a professional and reliable manufacturer of electric tools and an expert in special application solutions in the fields of metal processing, interior decoration and automobiles. Its products include: hand drill, tapping machine, charging drill/screwdriver, magnetic drill, charging screwdriver, electric screwdriver, impact wrench, charging gun, angle grinder, belt sander, grinder, polisher, vacuum cleaner and vibration tool.
2. Bosch Bosch (German, world brand, global leading manufacturer of electric tools and influential brand in the industry, Bosch Electric Tools (China) Co., Ltd.) 1886 started.
Bosch Power Tools is a world-renowned manufacturer of power tools and accessories, and its products have always maintained high standards in quality, technological innovation and after-sales service. At present, the products of Bosch power tools mainly include hand-held power tools, desktop power tools, measuring tools and power tool accessories.
3. Stanley (19 10 America, a world-famous tool brand, one of the largest power tool manufacturers in the world, a large multinational company, Stanley Black & Decker, USA).
Stanley is a well-known tool manufacturer in the United States, and a multinational group company specializing in hardware, tools, security and various products. Stanley electric drill metal chuck, durable; Speed regulating switch, which can quickly set the torque and speed matching with the application; Ergonomically designed and can be operated with one hand.
4. Hitachi (19 10 was founded in Japan, and Hitachi (China) Co., Ltd. is a world-famous brand, one of the largest comprehensive multinational groups in the world and a Fortune 500 enterprise).
Hitachi hand electric drill adopts high-precision drill chuck to ensure the same precision when it is subjected to continuous impact; It is practical and convenient to easily lock the power switch with one button. Don't keep pressing the switch, it's faster and more convenient.
5. Makita Makita Makita (founded in 19 15, a large multinational enterprise, one of the largest manufacturers specializing in the production of professional electric tools in the world, Makita (China) Co., Ltd.).
Makita hand drill adopts heat treatment technology to ensure that the chuck is durable and suitable for all kinds of high-load operations; Low motor temperature and strong overload capacity; Larger cooling holes improve the cooling speed, prevent the machine from overheating and improve the service life.
6.DEWALT (affiliated to Black & Decker Company, one of the world's largest manufacturers of electric tools, the world's leading tool manufacturer and famous brand, Stanley Black & Decker Company of the United States).
Dewei hand drill adopts louver ventilation design to effectively prevent dust; Careful ergonomic design; The rotor supports the shaft with good balance.
7. Mattel Mattel (1924, Germany, one of Germany's famous professional power tools manufacturers, a large multinational enterprise and a world brand, Mattel Power Tools (China) Co., Ltd.).
Maitaibao hand drill, lightweight plastic gear box, suitable for long-term use; Adjustable impact mechanism, suitable for drilling, impact drilling and screwdriver functions; Automatic safety clutch; Integrated switch design makes continuous use more convenient.
8. Ricky Ken (China famous brand, Shanghai famous trademark, high-tech enterprise, the world's leading high-end professional power tool operator, Shanghai Ricky Tool Co., Ltd.)
Rich hand drill adopts German technology, and high-quality high-power motor generates surging power; High-quality main parts such as high-precision chuck and power cord; Specially designed for screw holes, aiming at different materials to improve work efficiency.
9. Dongcheng Dongcheng (China well-known trademark, Jiangsu famous trademark, Jiangsu famous brand, one of the key enterprises specializing in manufacturing electric tools, Jiangsu Dongcheng Electric Tools Co., Ltd.).
Dongcheng hand drill high-performance motor, pure first-class copper motor, 500W power output; Optimize the structural layout of the output shaft and the design of double bearings; Boutique chuck is small in bounce, accurate and durable, and self-locking.
10, Hilti Hilti (in 194 1, a well-known brand of electric tools, a global supplier of quality service solutions for the construction industry, and a famous brand, Hilti (China) Trading Co., Ltd.).
Hilti hand drill has excellent motor performance curve under rated load; Imported gears ensure high strength and wear resistance; The second generation CPC has good performance and battery capacity.
Three, hand drill safety operation procedures
1, hand drill shell must be grounded or connected to zero protection.
2, hand drill wire to protect, it is forbidden to drag, prevent rolling, cutting, more are not allowed to drag the wire into the oil and water, to prevent oil and water corrosion wire.
3. Wear rubber gloves and rubber shoes when using; When working in a wet place, you must stand on a rubber mat or a dry board to prevent electric shock.
4. If there is leakage, vibration, fever or abnormal sound in the use of the electric drill, stop working immediately and find an electrician to check and repair it.
5. When the electric drill does not completely stop rotating, it is not allowed to remove or replace the drill bit.
6, power failure or leave the workplace, should immediately cut off the power supply.
7, can't be used to drill cement and brick walls. Otherwise, it is easy to overload the motor and burn it. The key lies in the lack of impact mechanism and low bearing capacity in the motor.
Four, hand drill matters needing attention
Hand electric drill is a drilling tool powered by AC power supply or DC battery, and it is a kind of hand-held electric tool. Hand electric drill is the largest selling product in the power tool industry, which is widely used in construction, decoration, furniture and other industries to punch holes or penetrate objects. Some industries are also called electric hammers. Matters needing attention in the operation of hand electric drill:
1. Check whether the power cord is damaged before use. If so, it must be wrapped with insulating tape. Do not soak in water during use, do not drag and trample, and do not touch heat sources and corrosive media.
2. Protective grounding (zero connection) measures must be taken for the hand electric drill with metal shell.
3. Before use, make sure that the switch of the hand drill is turned off to prevent the hand drill from suddenly turning when the plug is inserted into the power socket.
4. Before use, the electric drill should idle for 0.5 ~ 1 min, and check whether the transmission part is flexible, whether there is abnormal sound, whether the screw is loose and whether the commutator spark is normal.
5. Hold the electric drill tightly with both hands when punching, try not to operate with one hand, and master the correct operating posture.
6, can't use a bit with a gap, don't press down too much when drilling, in case the bit is interrupted.
7. Actions such as cleaning up the scrap of the cutter head and replacing the cutter head must be carried out under the condition of disconnecting the power supply.
8. For small workpieces, it is necessary to clamp them with the help of a fixture, and then use a hand drill.
9. During operation, the drilling force should not be too great to prevent the drill bit or joint from flying out and hurting people.
10. Before operation, carefully check whether the drill bit is cracked or damaged. If this situation is found, replace it immediately.
1 1. Pay attention to the rotation direction and feed direction of the drill bit.
12. Turn off the power first, and then remove the workpiece from the tool after the drill stops completely.
13. Don't touch the drill bit immediately after processing the finished part, so as to avoid overheating of the drill bit and burning the skin.
14. Before operation, carefully check whether the drill bit is cracked or damaged. If this situation is found, replace it immediately.
15. If there is a big spark on the commutator and the electric drill is overheated during use, it must be stopped for inspection, such as removing dirt, replacing worn brushes, and adjusting the spring pressure of the brush holder.
16. To avoid cutting fingers, please make sure that all fingers leave the workpiece or drill bit (tapping) during operation.
17, unplug the power plug in time when not in use. Electric drills should be stored in a dry and clean environment.
Five, how to replace the hand drill bit?
The method of replacing the drill bit of hand electric drill is as follows:
If you want to change the drill bit, you need to put on gloves (thicker), then hold the gourd mouth of the rubber drill and rotate it in the opposite direction, and then you can remove the drill bit. Turn it forward again, and you can replace the hand electric drill with a new drill.