How the first electric screwdriver
The tool run electricity for a minute, running hand holding hands, there should be no obvious feeling any abnormal fibrillation, observe the commutation spark, the commutation spark should not exceed 3/2, generally from the air inlet tool at the inside, there should be no obvious arc on the surface of the commutator. Running should be without exception of normal noise.
1, according to the need to distinguish between home or professional use, most power tools are designed for professionals, when shopping, should distinguish between professional and general family tools. Usually the professional and general household tools in different power, large power tools for professional use, to facilitate professionals to reduce the workload, the general household tools because the project is small, the workload is relatively small, so the input power tools need not be huge.2. The outer packing of the tool should be clearly patterned and not damaged. The plastic case is firm and the plastic case should be firmly and durable.3, the appearance of the tool should be uniform color, no obvious effect of plastic wire surface and dent, no scratch or bump traces, assembling dislocation between parts of 0.5mm shell, aluminum casting coating is smooth and beautiful without defects, the surface shall be free from dirt and stains. When holding by hand, the handle of switch should be smooth. The length of cable should be no less than 2 meters.4, the tool nameplate parameters should be consistent with the CCC certificate. The instructions should have detailed address and contact information of the manufacturer and the manufacturer. The nameplate or certificate shall have a batch number traceable to the product.5. Hold the tool by hand, switch on the power supply, operate the switch frequently, make the tool start frequently, and observe whether the switch of the tool switch is reliable or not. At the same time to observe the scene of TV sets, fluorescent lamps are abnormal. To verify that the tool is equipped with a valid radio interference suppressor.
Manner: there is a set in front, you can loosen it when you hug it in the back.(1) a driving device arranged inside the cutter body and an electric switch arranged on the cutter body.(2) the utility model is characterized in that a driving device is arranged between the cutter body and the cutter head.(3) the device is connected with a driving device arranged in the cutter body; a cutter head and a driving device.(4) the connection between the driving device and the cutter head is provided with a plurality of plug holes.(5) the utility model has the advantages that the cutter head can be changed at any time as required, and the utility model can be used for the installation of the sleeve screw under the 10mm; the utility model is convenient and quick in practical work, and the work efficiency is improved.
Drilling machine using electric power as power. Is the power tools in the conventional products, but also the largest demand for power tools products. 35% of China's power tools are produced and sold each year. According to reports, the next ten to fifteen years, the world sales of power tools will be increased by 5% per annum. Electric tool is a kind of "low value consumable" in Europe and America, electric tools not only as a tool, but also as a gift, a gift to each other, so it has great market potential.
