Hand drill for drill bits as follows:
The first step, disconnect the power supply of the hand drill, unplug the power cord of the hand drill from the socket.
The second step, both hands wearing gloves, one hand holding the hand drill, the other hand pinch the hand drill gourd mouth, rotate hard to let the hole for the installation of the drill bit exposed, if the front end of the hand drill has a ring of teeth, it is configured with a special key to twist, loosened to reveal the drill bit installation holes on the good.The third step, take out the drill to be installed, placed in the front of the hand drill exposed holes, with a hand clockwise rotation stuck drill.
Step 4, adjust the depth position of the stuck drill bit into the hole, and use the special key to twist clockwise to lock.
Step 5: Plug in the power cord of the drill and energize it, idle for 2 seconds to observe whether the drill is firmly installed.
Expanded Information
Introduction of the hand drill
In 1895, the German Fanyin manufactured the world's first DC hand drill. The casing was made of cast iron and was capable of drilling a 4mm hole in a steel plate. The hand drill is a portable small drilling tool, consisting of a small motor, control switch, drill chuck and drill several parts.
The hand drill is a drilling tool powered by AC power or DC battery, which is a kind of handheld power tool.
Hand drill is the power tools industry's largest-selling products, widely used in construction, decoration, pan-furniture and other industries, used in the object on the hole or hole through the object, some of the industry is also known as the hammer.
The main components of the drill: drill chuck, output shaft, gears, rotor, stator, casing, switch and cable.
Hand drill (pistol drill) - a tool used for drilling holes in metal materials, wood, plastic, etc.. When equipped with a forward and reverse switch and electronic speed control device, it can be used as an electric screwdriver. Some models are equipped with rechargeable batteries, can be in a certain period of time, in the absence of external power supply in the case of normal operation.
Special models: Right-angle drill --- suitable for use in narrow working space. (The head of the drill is at 90 degrees to the body of the drill, which reduces the working space required.)
Power drill safety regulations
1, the power drill shell must be grounded or zero neutral protection.
2, hand drill wires should be protected, it is strictly prohibited to drag to prevent rolling, cut, more forbidden to drag the wire into the oil and water to prevent oil and water corrosion of the wire.
3, use must wear rubber gloves, wear rubber shoes; work in wet places, must stand on rubber mats or dry board work to prevent electric shock.
4, the use of electric drill found leakage, vibration, high heat or a strange sound, you should immediately stop working, find an electrician to check and repair.
5, the drill is not completely stopped L rotation, can not unload, change the drill.
6, power outage rest or leave the workplace, should immediately cut off the power supply.
7, can not be used to drill cement and brick walls. Otherwise, it is very easy to cause motor overload and burn the motor. The key lies in the lack of impact mechanism in the motor, small bearing capacity.
Power drill precautions
Power drill is an AC power supply or DC battery-powered drilling tools, is a handheld power tools, power drill is the largest power tools industry sales of products, widely used in construction, decoration, furniture and other industries, used to open holes in objects or holes through the object, some of the industry of the also known as the electric hammer. Notes on the operation of the drill:
1, before using the power cord to check for damage. If so, must be wrapped in insulating tape, do not be flooded and dragged in use, and can not touch the heat and corrosive media.
2, for the metal casing of the drill must take protective grounding (zero) measures.
3, before use to make sure that the drill switch is off, to prevent the plug into the power outlet when the drill suddenly turned.
4, the drill should be used before idling 0.5 ~ 1min, check whether the transmission part is flexible, there is no abnormal noise, screws and other loose, commutator spark is normal.
5, punching holes in both hands to hold the drill, try not to operate one-handed, should master the correct operating position.
6, can not use a notched drill, drilling downward pressure should not be too much force to prevent the drill from breaking.
7, clean up the cutter head waste chips, change the cutter head and other such actions, must be carried out in the case of disconnecting the power supply.
8, for small workpieces must be clamped with the help of fixtures, and then use the electric drill.
9, the operation of the drill can not be too strong, in order to prevent the drill bit or tapping fly out to hurt.
10, before operation to carefully check whether the drill bit has cracks or damage, if found in this case, it should be replaced immediately.
11, pay attention to the direction of rotation and feed direction of the drill.
12. Turn off the power and wait until the drill stops completely before removing the workpiece from the tool.
13, do not touch the drill immediately after machining the workpiece, in order to avoid possible overheating of the drill and burning of the skin.
14. Check the drill bit carefully for cracks or damage before operation, and replace it immediately if this is found.
15, use if found on the rectifier sparks, drill overheating, you must stop using, carry out checks, such as removing dirt, replacing worn brushes, adjusting the brush holder spring pressure, etc..
16, in order to avoid cutting fingers, when operating to ensure that all fingers of the evacuation of the workpiece or drill (tapping).
17, should be promptly unplugged when not in use. The drill should be stored in a dry, clean environment