Question: Progress in machine tool technology over the last 100 years has led to the continual redefinition of precision as shown in Figure CS-10, developed by

Progress in machine tool technology over the last 100 years has led to the continual redefinition of precision as shown in Figure CS-10, developed by Taniguchi. The trend here is very clear-that precision in machining continues to improve over time and approaches some limit. Discuss this figure, addressing such issues as:
1. What is the limit in machining precision?
2. What is nanoprocessing? Give some examples.
3. What is the current industrial level of precision?
4. What is the correct title for the vertical axis on this figure?
5. What processes might be grouped into the nanotechnology field? For example, what level of precision is needed in a CD player or an artificial joint?

10 Ordinary cutting 9 10 l Ordinany rinding am 10 \i ordinary 10-1 1 1 Ordinary , polishing 10 Ultraprecision |processing 1 nm 10 Nanoprocessing 0.3 nm (mic lattice distance) + +--i 900 1920 1940 1960 980 2000 Year FIGURE CS-10

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