The Optimization of Machining Process Parameters for Factors Influencing KDP Crystal Surface Quality

摘要

In order to improve the surface quality of KDP crystals, the factors of process parameters on surface quality of KDP crystal was researched, the KDP crystal was machined by quadratic regression rotation optimization method and single point diamond turning technology. On-line monitoring the surface roughness and waviness of KDP crystal, using multi-factor interaction to get analysis rules. Finally, partial least squares method and lingo software were used to obtain optimal processing program, the tool radius of 9mm, speed of 800 r/min, feed rate of 9.184μm/r, turning back of 21μm. With these process parameters to machine KDP crystal, surface waviness can be achieved 0.020μm, and surface roughness can be achieved 0.017μm, has important guiding significance for machining large-size and high quality KDP crystals.