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The manufacture of high precision and, therefore, the development of new and improved processes and machines of high precision, has gained much more relevance in the last decade. Many advanced technology products rely entirely on one or more components manufactured to tolerances or dimensions in the micro or even nanotechnology range. The paper gives some examples and summarizes the current state of the art in dimensional measurement and servo motion control for instruments and ultra precision machine systems that are needed to meet this growing demand. A forward look is made in the engineering 'atomic bit' based scanning tunneling microscopy.
One of the fundamental principles of precision engineering is that of determinism. The behavior of the system is totally predictable even to movements at nanoscale. To do the work efficiently and correctly you need modern machinery.
"The basic idea is that machine tools obey cause and effect relationships that are within our ability to understand and control and that there is nothing random or probabilistic in their behavior. Everything happens for a reason and the list of reasons is enough Small to drive. "Jim Bryan
"By this we mean that machine tool errors are due to cause and effect relationships, and they do not vary randomly for any reason. In addition, the causes are not esoteric and uncontrollable, but can be explained in terms of engineering principles Family ". - Bob Donaldson
Professors Hiromu Nakazawa and Pat McKeown provide the following list of objectives for precision engineering:
1. Create a very precise movement.
2. Reduce the dispersion of product or part function.
3. Remove the assembly and promote the assembly, especially the automatic assembly.
4. Reduce the initial cost.
5. Reduce the cost of operation.
6. Extend the service life.
7. Enable the design safety factor to be lowered.
8. Improve the interchangeability of the components so that corresponding parts made by other factories or firms can be used in their place.
9. Improve quality control through higher machine accuracy capabilities and thereby reduce scrap, rework, and conventional inspection.
10. Achieve greater wear / fatigue life of components.
11. Make the functions independent of each other.
12. Achieve greater miniaturization and packaging densities.
13. Make new advances in technology and the underlying sciences. "