&lt;title&gt;Computer-controlled polishing to fabricate special optics&lt;/title&gt;

Giggel, Volkmar; Leitel, A.

doi:10.1117/12.57739

Cited by 1 publication

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“…Whereas the progress of fixed abrasive grinding can be traced through machine tool technology developments, the progress of polishing should be charted against process and measuring technology developments. The range of modern polishing processes includes: magnetorheological finishing (MRF), which carries abrasives in a fluid that can be stiffened using electromagnetic influence [49]; elastic emission finishing [50], which drives very fine abrasives into surfaces using a highspeed moving tool; and variants of sub-aperture polishing [51,52], examples of which are shown in figure 6. Many of these free abrasive polishing techniques are applied using sub-aperture tools.…”

Section: (B) Abrasive Machining Technologiesmentioning

confidence: 99%

Ultra-precision: enabling our future

Shore

Morantz

2012

Phil. Trans. R. Soc. A.

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This paper provides a perspective on the development of ultra-precision technologies: What drove their evolution and what do they now promise for the future as we face the consequences of consumption of the Earth’s finite resources? Improved application of measurement is introduced as a major enabler of mass production, and its resultant impact on wealth generation is considered. This paper identifies the ambitions of the defence, automotive and microelectronics sectors as important drivers of improved manufacturing accuracy capability and ever smaller feature creation. It then describes how science fields such as astronomy have presented significant precision engineering challenges, illustrating how these fields of science have achieved unprecedented levels of accuracy, sensitivity and sheer scale. Notwithstanding their importance to science understanding, many science-driven ultra-precision technologies became key enablers for wealth generation and other well-being issues. Specific ultra-precision machine tools important to major astronomy programmes are discussed, as well as the way in which subsequently evolved machine tools made at the beginning of the twenty-first century, now provide much wider benefits.

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