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  • grinding and polishing machinery

Machinery used to grind and finish a component, such as a lens or prism, to a desired precision. Usually such machines carry a cup-shaped or flat tool (lap) into close contact with the part. An abrasive or polishing material is placed between the tool and the part, and the lap is moved in a nonrepetitive series of movements. Driving mechanisms for aspheric shaping are complicated; for spherical and flat parts, they are relatively simple.
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