Research On Elid Grinding Expert System Of Processes And Elid Lapping Device Development

Difficult-to-cut materials with high strength, high density, high melting point andgood toughness was widely used in national defense military, aviation and civilhigh-tech fields, but its precision and ultra-precision processing is very difficult. ELIDgrinding technology was awarded as "the21st century ultra-precision processingtechnology" by CIRP, with its high efficiency, accurate grinding, get good surfacequality, device simple and be suitable for all kinds of materials, so ELID technology iswidely used in solving difficult-to-machine materials ultra-precision mirrorprocessing problem, and achieved good effect. Summarizes experience of ELIDmirror surface grinding of Difficult-to-cut materials, Build grinding processparameters expert system which is based on ELID grinding of difficult-to-machinematerials, further development of ELID grinding process systems and equipment, andit has important significance for promote the precision and ultra-precision processinglevel of difficult-to-machine materials.In this paper, through experimental research on the ultra precision mirror ELIDgrinding and lapping and polishing for carbonized cold-rolling steel, KDP crystal, andalumina ceramic, found out the ultra-precision mirror processing technology for thiskind of material, On this basis, based on our Research office years of experience inELID precision mirror processing research, developed a ELID grindingdifficult-to-machine materials processing parameters expert system; then study forELID precision polish process of alumina ceramics, design and develop a ELIDgrinding machine, most contents as the following:(1) We got roughness of Ra=6~8nm, Ra=9nm, Ra=9nm high quality processingsurface, processing carbonized cold-rolling steel, KDP crystal materials and aluminaceramics piece with ELID precision mirror grinding;(2) Summarizes ELID precision mirror processing parameters of the threedifficult-to-machine materials, explore the plastic grinding conditions of thesedifficult-to-machine materials, summing up predecessors’ experience of ELIDprecision mirror grinding, establish difficult-to-machine precision mirror grindingprocess parameters database;(3) Design Surface with Visual Basic, using Access realize management andmaintenance of the database, using mixed reasoning principle and establish a ELIDgrinding process parameters expert system, realization predictions for ELID grindingprocess parameters of difficult-to-machine materials;(4) Through experimental research on the precision mirror ELID grinding for alumina ceramic, found out a suitable ELID precision grinding process for aluminaceramics;(5) With the above alumina ELID precision grinding technology and ELIDgrinding machining technology as the foundation, design and develop a ELIDgrinding machine, and using the grinding machine for alumina ceramics piecepolishing processing, got the surface roughness Ra=20nm processing surface, andmake the alumina ceramic processing efficiency increased by60%.