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The first, what were considered machine tools, were actually made for the purpose of making other tools. These tools removed the human element from the process of stamping these tools by hand. Instead they were now stamped by machines.

The most basic tools are simple machines. For example, a crowbar simply functions as a lever. The further out from the pivot point, the more force is transmitted along the lever. Machine tools can actually be powered by a number of sources. Aside from human and animal power, the energy for these tools can be captured from waterwheels and steam engines, in the early days, and finally electricity today. The Industrial Revolution had a huge impact on the progress made with machine tools.

Machine tools can be manually operated or automatically controlled. The very early machine tools used flywheels to stabilize their motion. They also had complex systems of gears and levers to control the machine and whatever piece it was that it was working on.

It was not long before these machines could automatically change the cutting and shaping tools that were being used in the process. To give an example, a drill machine might contain a magazine or cartridge with a number of drill bits. These bits could be used for producing holes of different sizes. Before it was automated, operators would have to manually change the bit in order to drill a different size hole. Today, we have the technology to create a machine that can alternate the drill bits by computer program control.

Electrical Tool Machine:
Using electric tools must be aware of several dangers; the most serious is the possibility of electrocution. To protect the user from shock, tools must both have a three-wire cord with ground and be grounded, be double insulated, or be powered by a low-voltage isolation transformer.

Double insulation is more convenient. The user and the tools are protected in two ways: by normal insulation on the wires inside, and by a housing that cannot conduct electricity to the operator in the event of a malfunction.

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