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Question #1 - blades From there the application took off...

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Write a literature review covering the historical development and principles covering CNC machining, CAD/CAM integration and injection molding. Cite the references you used for your literature review CNC machining, as well as CAD/CAM integration all developed out of the rapid advance in technology and the desperate need for manufacturing processes to keep pace. The first CNC machines were operated with handcranks in the 1800’s. Obviously, there was a flaw in accuracy and precision, as the output of the machine depended solely on the skill of the operator. Even the most experienced operators could not make the perfect piece every time. The job of the operator was also a tiresome one, sometimes operating as many as five axis at a time. Then, during the late 1940’s and early 1950’s, John Parsons used an early IBM computer and was able to make much more accurate contour guides to manufacture helicopter
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Unformatted text preview: blades. From there the application took off. Today CNC machines are readily available and can do amazingly complex designs with a simple computer integration with the CAD/CAM programs. Injection molding got its start at around the same time as CNC machining. In the 1800’s it was used to produce products such as combs and buttons, to evolving to sophisticated levels where it can now produce industrial, medical and aerospace products. Injection molding techniques have changed slightly since its humble beginnings in the 1800’s, but the process still remains simple and easy to replicate thousands of products. http://www.plasticmoulding.ca/history.htm http://www.cncinformation.com/cnc-info-cnc-information-cnc-general-info/cnc-machine-tool...
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This note was uploaded on 08/18/2011 for the course ME 324 taught by Professor Boylan during the Spring '08 term at Iowa State.

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