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History of CNC machines - Literature review Example

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Parsons is considered to be one of the pioneering contributors for numerically controlled machines. Douglas Ross made pioneering efforts in…
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History of CNC machines
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History of CNC machines

Download file to see previous pages... Nowadays CNCs offer the capacity to connect to the internet. Companies having multi operations are benefitted a lot from this so that they can transfer their programmes to other locations. Today’s CNCs provide a very high level of automation. Any skillful operator can use all the features to increase his/her own as well as company’s productivity. Their capacity to deliver extreme precision has given a great boost to innumerable new state-of-the-art technologies as a multiplier effect to produce thousands of products in the last 30-40 years.
1. Introduction: “The world CNC is an acronym for Computer(ized) Numerical(ly) Control(led) machines used for the manufacturing of simple or complex parts from metal, wood and other materials by using the programme known as G-code.” (CNC- Definition).
It all began with the creation of the worlds first digital electronic computer in 1945 by Dr. John Mauchly and Dr.J. Presper at the University of Pennsylvania. The device was called an electrical numerical integrator and calculator (ENIAC). It came into existence out of the need for faster scientific and engineers calculations required during World War II. It was not a programmable device but surely it was a first indication what the world is heading for in terms of computational and programming tools in later years.
Before the advent of NC machines, operator had to manipulate the hand-wheels, levers, cams to make parts. This way the ability of the operator to make the parts with required narrow tolerance was limited. There were all possibilities of some variation resulting into variation of the axis dimensions resulting into poor fittings or wastages. The productivity of the worker was low so it was a dire need to operate the machine automatically. Earlier a series of cams were put to use to move the tools as an attempt to automate the process. Though they were tedious to set but once set it ...Download file to see next pagesRead More
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