A numerical control processing method, device and system for optical glass components

Abstract

The embodiment of the invention discloses a numerical control machining method, device and system for an optical glass element. The numerical control machining method comprises the steps that a dwelltime function is calculated according to surface shape error data and a removal function of the optical glass element, so that a first machining path is determined; the optical glass element is polished and machined according to the first machining path until the wavefront PV value of the optical glass element is not greater than the preset PV threshold value; then a smoothing dwell time functionis calculated according to smoothing fitting surface shape error data and the removal function, so that a second machining path is determined; second-time polishing machining is conducted according tothe second machining path until the RMS value of the optical glass element is not greater than the preset GRMS threshold value; and finally, a paseudorandom type machining path is determined based ona smoothing polishing technology, third-time polishing machining is conducted according to the paseudorandom type machining path until the wavefront PSD1 RMS value, the surface shape PSD2 RMS value and the surface roughness RMS value of the optical glass element all reach the qualified values, and machining of the element is completed. According to the numerical control machining method, qualified machining of an all-band index of the optical glass element is achieved, and the machining efficiency and the machining precision of the optical glass element are improved.

Description

technical field [0001] The embodiments of the present invention relate to the field of optical precision machining, in particular to a numerical control machining method, device and system for optical glass components. Background technique [0002] With the rapid development of laser technology, various laser systems based on laser technology are used in all walks of life. For example, laser sweepers are used in agricultural machinery for leveling, used in road and bridge construction for bridge inspection, and used in the construction industry for leveling. elevation. For high-power laser systems, in order to ensure the normal, stable and high-precision operation of the system, it is necessary to strictly control the spatial modulation of the transmitted beam. [0003] All kinds of optical components made of optical glass are generally used in laser systems to transmit light beams and change the direction of light beams. The processing precision of optical glass components...

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Problems solved by technology

However, this method requires annular polishing not only to have the ability to maintain high surface accuracy, but also to have the ability to maintain surface distribution. However, the size of the annular polishing disc is much larger than the size of the optical glass element, and the polishing disc cannot be well attached. If the surface of the component is not combined, it is very easy to cause excessive removal of local materials, which makes the processing process repeated, which not only leads to a decrease in the accuracy of the full-frequency index processing, but also prolongs the processing cycle and reduces processing efficiency.

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