In the 1960s, as the technology of battery manufacturing grew, there was the introduction of battery-operated power tools that were powered by nickel-cadmium batteries. But at that time, because of the high price, the growth was slower.
By the mid-to-late 1970s, the power tools were widely used in Western Europe and Japan, as the cost of batteries fell and the charging time became shorter. Power tools were originally made of cast iron, then switched to aluminum alloy. In the 1960s, thermoplastic engineering plastics were applied to power tools, and the double insulation of power tools was realized to ensure the safety of the use of power tools. Due to the growth of electronic technology, 60 years of electronic speed control power tools. The electric tool uses thyristor and other components to form an electronic circuit, and the speed is regulated by the depth difference of the press button being pressed into the switch, so that the electric tool can be used according to the difference of the tool being processed (such as the material difference, the diameter of the drilling hole, etc.), and the rest of the speed can be selected.
From the accessories on the market to see the difficulty of buying accessories. If you want to buy all the power tools accessories in a store, it is a difficult thing to control, no matter how complete the accessories of a shop is good, to buy the time, you will always find that there are always some accessories do not fully meet the requirements, either a little bigger or a little smaller, but the accessories of this kind of equipment, just need a specification, It doesn’t fit any bigger or any smaller.
