| The definition of a machine tool, if you look | | | | machine tools used flywheels to stabilize |
| in the dictionary, is a powered machine used | | | | their motion. They also had complex systems |
| for cutting or shaping or finishing metals or | | | | of gears and levers to control the machine |
| other materials. This actually applies to a | | | | and whatever piece it was that it was working |
| wide variety of tools such as a broach, | | | | on.After World War II a new advanced machine |
| drill, gear shaper, hobbing machine, lathe, | | | | was made called the numerical control |
| milling machine, shaper, and grinder.Of | | | | machine. This machine used a series of |
| course this definition doesn't really | | | | numbers punched on paper tape or punch cards |
| describe the usefulness of these type of | | | | that controlled their motion.In the 1960s, |
| tools. So we'll try to do just that in this | | | | computers were then added to the function of |
| article.Most machine tools, also by | | | | making these machines work. These computers |
| definition, are tools that are tools that use | | | | gave more flexibility to the process. These |
| a power source. In other words, not operated | | | | machines became known as computer numerical |
| manually. But there are some tools that are | | | | control machines and they could repeat the |
| considered machine tools that are operated by | | | | same set of instructions over and over |
| hand.The first, what were considered machine | | | | similar to an assembly line. These machines |
| tools, were actually made for the purpose of | | | | could produce pieces that were much more |
| making other tools. These tools removed the | | | | complex than anything produced by even the |
| human element from the process of stamping | | | | most skilled tool operator.It wasn't long |
| these tools by hand. Instead they were now | | | | before these machines could automatically |
| stamped by machines.The first lathe machine | | | | change the cutting and shaping tools that |
| tools were invented in 1751 by Jacques de | | | | were being used in the process. To give an |
| Vaucanson. He was the very first to mount | | | | example, a drill machine might contain a |
| the cutting instrument of the tool on a | | | | magazine or cartridge with a number of drill |
| mechanically adjustable head. This took the | | | | bits. These bits could be used for producing |
| tool out of the hands of the operator.Machine | | | | holes of different sizes. Before it was |
| tools can actually be powered by a number of | | | | automated, operators would have to manually |
| sources. Aside from human and animal power, | | | | change the bit in order to drill a different |
| the energy for these tools can be captured | | | | size hole. Today, we have the technology to |
| from waterwheels and steam engines, in the | | | | create a machine that can alternate the drill |
| early days, and finally electricity today. | | | | bits by computer program control.The truth |
| The Industrial Revolution had a huge impact | | | | is, without machine tools, many of the things |
| on the progress made with machine | | | | that we are able to make today would be |
| tools.Machine tools can be manually operated | | | | either tool difficult, too costly or simply |
| or automatically controlled. The very early | | | | impossible to make. |