Tools - Machine Tools

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